Patent Description:
In the related art, when a robot vacuum cleaner operates, a brushroll mounted to the robot vacuum cleaner rotates along with the robot vacuum cleaner, and dirt on the ground is hurled into a dust suction port by the rotation of the brushroll, such that the dirt can be sucked into the robot vacuum cleaner more effectively. Moreover, plant fibers of the brushroll can remove the stains on the ground, which will improve the cleaning ability. However, the plant fibers of the existing brushroll have high process requirements, and results in high cost and low efficiency.

In CN <NUM> A a cleaning device is disclosed. In the roller brush device of the device, a single roller brush is cut into a plurality of roller brush units, and when multiple roller brushes are set the roller brush units between two adjacent ones are staggered from each other, and the rotational speeds of the plurality of roller brushes are the same and the steering is reversed, thereby effectively preventing the roller body from being too long, resulting in large vibration during the working process and the possibility of deformation of the roller body.

<CIT> discloses an upright vacuum cleaner floor brush assembly and an upright vacuum cleaner, the floor brush assembly comprising: a roller brush; a motor, the motor driving the rotation of the roller brush by means of a transmission belt, the transmission belt being wound around a motor shaft of the motor and a center part of the roller brush; a roller brush shell, the roller brush shell covering the roller brush, and the roller brush shell being provided with a dust suction opening, a roller brush suction flow channel in communication with the dust suction opening and a transmission belt installation cavity used for installing the transmission belt being defined inside the roller brush shell, the roller brush suction flow channel comprising a first suction flow channel and a second suction flow channel positioned on two sides of the transmission belt installation cavity.

<CIT> discloses a spiral shaped roller shaft bar for a vacuum cleaner robot sweeper, including a spiral roller body, a plastic brush and a plastic soft scraper blade set on the spiral roller body; its characteristics are that the core of the spiral roller body is a circular through-hole, the spiral roller body is provided with a slot on the outer wall; said slot extends from the middle of the spiral roller body to both ends, one end is extended by clockwise rotation, and the other end The spiral drum body is provided with a slot on the outer wall of the spiral drum body. The slot includes four strips, two of which are connected to plastic brushes and two of which are connected to plastic soft scrapers.

Embodiments of the present invention provide a brushroll and a robot vacuum cleaner.

The brushroll according to embodiments of the present invention is used in a robot vacuum cleaner. The brushroll according to embodiments of the present invention includes: a first roller and a second roller, the first roller and the second roller being mirror-symmetrical in an axial direction perpendicular to the brushroll and coaxially arranged, the first roller being provided with a plurality of first mounting grooves spaced apart and arranged along a circumferential direction of the first roller, while the second roller being provided with a plurality of second mounting grooves spaced apart and arranged along a circumferential direction of the second roller; a first brush member inserted in the first mounting groove; and a second brush member inserted in the second mounting groove, wherein the brushroll includes a connecting member that connects the first roller and the second roller, and the connecting member is used to limit relative rotation of the first roller <NUM> and the second roller, wherein the connecting member includes a disc body, a first snap block, and a second snap block. The first snap block and the second snap block are provided to two opposite sides of the disc body. The first roller is provided with a first snap groove, and the second roller is provided with a second snap groove. The first snap block is snap-fitted in the first snap groove <NUM>, and the second snap block is snap-fitted in the second snap groove.

In the brushroll according to embodiments of the present invention, the first roller and the second roller are mirror-symmetrical, a bottom surface of each first brush member can be inserted in the first mounting groove, and a bottom surface of each second brush member can be inserted in the second mounting groove, whereby the manufacturing cost of the brushroll can be reduced, the installation thereof is facilitated, and the efficiency is high.

The robot vacuum cleaner according to embodiments of the present invention includes a cleaner body and a brushroll provided to the cleaner body. The brushroll includes: a first roller and a second roller, the first roller and the second roller being mirror-symmetrical in an axial direction perpendicular to the brushroll and coaxially arranged, the first roller being provided with a plurality of first mounting grooves spaced apart and arranged along a circumferential direction of the first roller, while the second roller being provided with a plurality of second mounting grooves spaced apart and arranged along a circumferential direction of the second roller; a first brush member inserted in the first mounting groove; and a second brush member inserted in the second mounting groove.

In the robot vacuum cleaner according to embodiments of the present invention, the first roller and the second roller are mirror-symmetrical, a bottom surface of each first brush member can be inserted in the first mounting groove, and a bottom surface of each second brush member can be inserted in the second mounting groove, whereby the manufacturing cost of the brushroll can be reduced, the installation thereof is facilitated, and the efficiency is high.

Additional aspects and advantages of embodiments of present invention will be given in part in the following descriptions, become apparent in part from the following descriptions, or be learned from the practice of the embodiments of the present invention.

These and/or other aspects and advantages of the present invention will become apparent and more readily appreciated from the following descriptions of embodiments made with reference to the drawings, in which:.

Main reference numerals:
robot vacuum cleaner <NUM>, brushroll <NUM>, first roller <NUM>, first mounting groove <NUM>, first snap groove <NUM>, second roller <NUM>, second mounting groove <NUM>, second snap groove <NUM>, first brush member <NUM>, first mounting portion <NUM>, first dedusting portion <NUM>, first sub-brush body <NUM>, second sub-brush body <NUM>, second brush member <NUM>, second mounting portion <NUM>, second dedusting portion <NUM>, third sub-brush body <NUM>, fourth sub-brush body <NUM>, connecting member <NUM>, disc body <NUM>, first snap block <NUM>, second snap block <NUM>, first end cover <NUM>, second end cover <NUM>, motor rotating cover <NUM>, cleaner body <NUM>, side brush <NUM>.

Further illustration of embodiments of the present invention will be made with reference to the drawings. The same or similar elements and the elements having same or similar functions are denoted by like reference numerals throughout the descriptions.

In addition, the embodiments described herein with reference to drawings are illustrative, and used to generally understand the present invention.

The embodiments shall not be construed to limit the present invention.

In the present invention, unless specified or limited otherwise, a structure in which a first feature is "on" or "below" a second feature may include an embodiment in which the first feature is in direct contact with the second feature, and may also include an embodiment in which the first feature and the second feature are not in direct contact with each other, but are contacted via an additional feature formed therebetween. Furthermore, a first feature "on," "above," or "on top of" a second feature may include an embodiment in which the first feature is right or obliquely "on," "above," or "on top of" the second feature, or just means that the first feature is at a height higher than that of the second feature; while a first feature "below," "under," or "on bottom of" a second feature may include an embodiment in which the first feature is right or obliquely "below," "under," or "on bottom of" the second feature, or just means that the first feature is at a height lower than that of the second feature.

Referring to <FIG> and <FIG>, a brushroll <NUM> is provided in the present invention. The brushroll <NUM> includes a first roller <NUM> and a second roller <NUM>. The first roller <NUM> and the second roller <NUM> are mirror-symmetrical in an axial direction perpendicular to the brushroll <NUM> and coaxially arranged. The first roller <NUM> is provided with a plurality of first mounting grooves <NUM> spaced apart and arranged along a circumferential direction of the first roller <NUM>. The second roller <NUM> is provided with a plurality of second mounting grooves <NUM> spaced apart and arranged along a circumferential direction of the second roller <NUM>. The brushroll <NUM> further includes a first brush member <NUM> and a second brush member <NUM>. The first brush member <NUM> is inserted in the first mounting groove <NUM>, while the second brush member <NUM> is inserted in the second mounting groove <NUM>.

In the brushroll <NUM> according to the above embodiment, the first roller <NUM> and the second roller <NUM> are mirror-symmetrical, a bottom surface of each first brush member <NUM> can be inserted in the first mounting groove <NUM>, and a bottom surface of each second brush member <NUM> can be inserted in the second mounting groove <NUM>, in which way the manufacturing cost of the brushroll <NUM> can be reduced, the installation thereof is facilitated, and the efficiency is high.

Specifically, the first roller <NUM> and the second roller <NUM> are molded in a split manner. The first roller <NUM> and the second roller <NUM> have the same shape and size. The first roller <NUM> and the second roller <NUM> may each have a substantially cylindrical shape. When the brushroll <NUM> is produced using a mold for the brushroll <NUM>, the first roller <NUM> and the second roller <NUM> can be obtained by being rotated out of the same mold reversely. An end of the first roller <NUM> and an end of the second roller <NUM> may be connected together by an external element to form one brushroll <NUM>.

It could be understood that the first roller <NUM> and the second roller <NUM> are mirrored and coaxially arranged in the axial direction perpendicular to the brushroll <NUM>, that is, respective central axes of the first roller <NUM> and the second roller <NUM> are on the same horizontal plane. The first roller <NUM> and the second roller <NUM> are symmetrical in a left-and-right direction perpendicular to an axial direction of a central axis of the brushroll <NUM>, and the shapes and sizes of the first roller <NUM> and the second roller <NUM> are consistent in a mirrored manner.

Specifically, in one example, the first mounting grooves <NUM> provided in the first roller <NUM> can be evenly spaced apart in the circumferential direction, and for instance, a circumferential angular difference between the two adjacent first mounting grooves <NUM> is <NUM> degrees, <NUM> degrees or <NUM> degrees, which will not be limited herein. The second mounting grooves <NUM> provided in the second roller <NUM> can be evenly spaced apart in the circumferential direction, and for instance, a circumferential angular difference between the two adjacent second mounting grooves <NUM> is <NUM> degrees, <NUM> degrees or <NUM> degrees, which will not be limited herein.

The first brush member <NUM> and the second brush member <NUM> are both brush structures for cleaning. In one embodiment, the first brush member <NUM> includes a leather strip structure or a fur strip structure having different cleaning capabilities. The second brush member <NUM> also includes a leather strip structure or a fur strip structure having different cleaning capabilities. The first brush member <NUM> is movable relative to the first mounting groove <NUM>, and the second brush member <NUM> is movable relative to the second mounting groove <NUM>. During the production and assembly, the first brush member <NUM> can be inserted into the first mounting groove <NUM> along an axial direction of the first mounting groove <NUM>, and the second brush member <NUM> can be inserted into the second mounting groove <NUM> along an axial direction of the second mounting groove <NUM>, which leads to high efficiency, convenient installation, and low cost.

Referring to <FIG> and <FIG>, in certain embodiments, the plurality of the first mounting grooves <NUM> are arranged spirally along an axial direction of the first roller <NUM>, and the plurality of the second mounting grooves <NUM> are arranged spirally along an axial direction of the second roller <NUM>. Along the axial direction of the first roller <NUM>, the spiral direction of the first mounting grooves <NUM> is opposite to the spiral direction of the second mounting grooves <NUM>, such that the cleaning ability of the brushroll <NUM> can be enhanced.

It could be understood that in the axial direction L of the first roller <NUM> from left to right, the spiral direction of the first mounting grooves <NUM> is from bottom to top, while the spiral direction of the second mounting grooves <NUM> is from top to bottom. That is, the spiral direction of the first roller <NUM> is opposite to the spiral direction of the second roller <NUM>. In addition, during the production of the first roller <NUM> and the second roller <NUM>, it is only necessary to rotate blanks of the first roller <NUM> and the second roller <NUM> in different directions to obtain mounting grooves having the opposite spiral directions, so as to obtain the first roller <NUM> and the second roller <NUM>.

Referring to <FIG>, <FIG>, in certain embodiments, the first brush member <NUM> includes a first mounting portion <NUM> and a first dedusting portion <NUM> provided to the first mounting portion <NUM>. The first brush member <NUM> is inserted in the first mounting groove <NUM> through the first mounting portion <NUM>. The second brush member <NUM> includes a second mounting portion <NUM> and a second dedusting portion <NUM> provided to the second mounting portion <NUM>. The second brush member <NUM> is inserted in the second mounting groove <NUM> through the second mounting portion <NUM>.

Thus, the first brush member <NUM> can be quickly mounted into the first mounting groove <NUM> through the first mounting portion <NUM>, and the second brush member <NUM> can be quickly mounted into the second mounting groove <NUM> through the second mounting portion <NUM>, which brings about high efficiency and low cost.

Specifically, in one embodiment, the first dedusting portion <NUM> can adhere to the first mounting portion <NUM> by means of an adhesive, and the second dedusting portion <NUM> can also adhere to the second mounting portion <NUM> by means of an adhesive. In another embodiment, the first dedusting portion <NUM> can be mounted to the first mounting portion <NUM> by mechanical pressing, and the second dedusting portion <NUM> can also be mounted to the second mounting portion <NUM> by mechanical pressing.

Referring to <FIG>, in certain embodiments, the first brush member <NUM> includes a first sub-brush body <NUM> and a second sub-brush body <NUM>, and the first sub-brush body <NUM> and the second sub-brush body <NUM> are alternately inserted in the first mounting grooves <NUM> along the circumferential direction of the first roller <NUM>. The first dedusting portion <NUM> of the first sub-brush body <NUM> has greater rigidity than the first dedusting portion <NUM> of the second sub-brush body <NUM>. The second brush member <NUM> includes a third sub-brush body <NUM> and a fourth sub-brush body <NUM>, and the third sub-brush body <NUM> and the fourth sub-brush body <NUM> are alternately inserted in the second mounting grooves <NUM> along the circumferential direction of the second roller <NUM>. The second dedusting portion <NUM> of the third sub-brush body <NUM> has greater rigidity than the second dedusting portion <NUM> of the fourth sub-brush body <NUM>.

Thus, the brushroll <NUM> can adapt to different types of floor to be cleaned, thereby resulting in good user experience.

It could be understood that the first sub-brush body <NUM> and the second sub-brush body <NUM> are alternately inserted in the first mounting grooves <NUM> along the circumferential direction of the first roller <NUM>. In one embodiment, the first sub-brush body <NUM> and the second sub-brush body <NUM> are evenly and alternately inserted in the first mounting grooves <NUM> along the circumferential direction of the first roller <NUM>. That is, the circumferential angular difference between the adjacent first sub-brush body <NUM> and the second sub-brush body <NUM> is consistent. Preferably, the circumferential angular difference between the adjacent first sub-brush body <NUM> and the second sub-brush body <NUM> is <NUM> degrees. Likewise, the third sub-brush body <NUM> and the fourth sub-brush body <NUM> are alternately inserted in the second mounting grooves <NUM> along the circumferential direction of the second roller <NUM>. In one embodiment, the third sub-brush body <NUM> and the fourth sub-brush body <NUM> are evenly and alternately inserted in the second mounting grooves <NUM> along the circumferential direction of the second roller <NUM>. That is, the circumferential angular difference between the adjacent third sub-brush body <NUM> and the fourth sub-brush body <NUM> is consistent. Preferably, the circumferential angular difference between the adjacent third sub-brush body <NUM> and the fourth sub-brush body <NUM> is <NUM> degrees.

Further, the rigidity of the first dedusting portion <NUM> of the first sub-brush body <NUM> is greater than the rigidity of the first dedusting portion <NUM> of the second sub-brush body <NUM>, that is, the cleaning force of the first dedusting portion <NUM> of the first sub-brush body <NUM> is greater than the cleaning force of the first dedusting portion <NUM> of the second sub-brush body <NUM>. The different rigidity of the first sub-brush body <NUM> and the second sub-brush body <NUM> enables the brushroll <NUM> to adapt to different floor types during the cleaning. Likewise, the rigidity of the second dedusting portion <NUM> of the third sub-brush body <NUM> is greater than the rigidity of the second dedusting portion <NUM> of the fourth sub-brush body <NUM>, that is, the cleaning force of the second dedusting portion <NUM> of the third sub-brush body <NUM> is greater than the cleaning force of the second dedusting portion <NUM> of the fourth sub-brush body <NUM>. The different rigidity of the third sub-brush body <NUM> and the fourth sub-brush body <NUM> enables the brushroll <NUM> to adapt to different floor types during the cleaning.

Specifically, the first sub-brush body <NUM> can be a leather strip for cleaning, and the integral leather strip can be directly mounted to the first mounting portion <NUM>. The second sub-brush body <NUM> can be a fur strip for cleaning, and the fur strip is mounted to the first mounting portion <NUM>. The third sub-brush body <NUM> can be a leather strip for cleaning, and the whole leather strip can be directly mounted to the second mounting portion <NUM>. The fourth sub-brush body <NUM> can be a fur strip for cleaning, and the fur strip is mounted to the second mounting portion <NUM>.

In one embodiment, three first sub-brush bodies <NUM> and three second sub-brush bodies <NUM> are provided, and meanwhile, three third sub-brush bodies <NUM> and three fourth sub-brush bodies <NUM> are provided. In another embodiment, three first sub-brush bodies <NUM> and three second sub-brush bodies <NUM> are provided. In yet another embodiment, three third sub-brush bodies <NUM> and three fourth sub-brush bodies <NUM> are provided.

Thus, the brushroll <NUM> can have an improved cleaning ability, a simple structure, and low costs.

It could be understood that a circumferential angular different between adjacent two second sub-brush bodies <NUM> is <NUM> degrees; a circumferential angular different between adjacent two third sub-brush bodies <NUM> is <NUM> degrees; a circumferential angular different between adjacent two fourth sub-brush bodies <NUM> is <NUM> degrees.

In one embodiment, an end of the second sub-brush body <NUM> away from the first roller <NUM> is higher than an end of the first sub-brush body <NUM> away from the first roller <NUM>, and meanwhile, an end of the third sub-brush body <NUM> away from the second roller <NUM> is higher than an end of the fourth sub-brush body <NUM> away from the second roller <NUM>. In another embodiment, an end of the second sub-brush body <NUM> away from the first roller <NUM> is higher than an end of the first sub-brush body <NUM> away from the first roller <NUM>. In yet another embodiment, an end of the third sub-brush body <NUM> away from the second roller <NUM> is higher than an end of the fourth sub-brush body <NUM> away from the second roller <NUM>.

Thus, the cleaning ability of the brushroll <NUM> can be improved, and the brushroll <NUM> can adapt to different floor types during the cleaning.

Preferably, the height of the second sub-brush body <NUM> is higher than the height of the first sub-brush body <NUM> by <NUM>. The height of the fourth sub-brush body <NUM> is higher than the height of the third sub-brush body <NUM> by <NUM>. Certainly, the height difference between the first sub-brush body <NUM> and the second sub-brush body <NUM> can be determined based on actual requirements, which will not be limited herein. Likewise, the height difference between the third sub-brush body <NUM> and the fourth sub-brush body <NUM> can be determined based on actual requirements, which will not be limited herein.

Referring to <FIG> and <FIG>, in certain embodiments, the first mounting groove <NUM> is a T-shaped groove, and the second mounting groove <NUM> is a T-shaped groove, such that the first brush member <NUM> can be easily inserted in the first mounting groove <NUM>, and the second brush member <NUM> can be easily inserted in the second mounting groove <NUM>.

Referring to <FIG> and <FIG>, in certain embodiments, the brushroll <NUM> includes a connecting member <NUM> that connects the first roller <NUM> and the second roller <NUM>, and the connecting member <NUM> is used to limit relative rotation of the first roller <NUM> and the second roller <NUM>. Thus, the interconnection between the first roller <NUM> and the second roller <NUM> can be achieved through the connecting member <NUM>, which makes the structure simple.

Specifically, the connecting member <NUM> may be a separate component, and two ends of the connecting member <NUM> are connected to the first roller <NUM> and the second roller <NUM>, respectively. The diameter of the connecting member <NUM> can be consistent with the diameter of the first roller <NUM> and the diameter of the second roller <NUM>. In one embodiment, the connecting member <NUM> may exhibit a circular ring shape.

Referring to <FIG> and <FIG>, in certain embodiments, the connecting member <NUM> includes a disc body <NUM>, a first snap block <NUM>, and a second snap block <NUM>. The first snap block <NUM> and the second snap block <NUM> are provided to two opposite sides of the disc body <NUM>. The first roller <NUM> is provided with a first snap groove <NUM>, and the second roller <NUM> is provided with a second snap groove <NUM>. The first snap block <NUM> is snap-fitted in the first snap groove <NUM>, and the second snap block <NUM> is snap-fitted in the second snap groove <NUM>.

Thus, the first roller <NUM> and the second roller <NUM> can be easily secured together through the fitting between the first snap block <NUM> and the first snap groove <NUM> and the fitting between the second snap block <NUM> and the second snap groove <NUM>.

Specifically, a plurality of first snap blocks <NUM> are provided and evenly spaced, and a plurality of second snap blocks <NUM> are provided and evenly spaced. The numbers of the first snap blocks <NUM> and the second snap blocks <NUM> are not limited herein, and can be determined based on actual requirements.

It could be understood that an end of the first roller <NUM> is provided with the first snap groove <NUM> away from the second roller <NUM>, that is, the first snap groove <NUM> can be perpendicular to a sectional direction of the disc body <NUM>. An end of the second roller <NUM> is provided with the second snap groove <NUM> away from the first roller <NUM>, that is, the second snap groove <NUM> can be perpendicular to the sectional direction of the disc body <NUM>.

Referring to <FIG>, embodiments of the present invention also provide a robot vacuum cleaner <NUM>. The robot vacuum cleaner <NUM> includes the brushroll <NUM> according to any one of the above embodiments. The brushroll <NUM> is mounted to a cleaner body <NUM>. The cleaner body <NUM> includes a motor (not illustrated), and the motor is used to drive the brushroll <NUM> to rotate.

In the robot vacuum cleaner <NUM> according to the above embodiments, the first roller <NUM> and the second roller <NUM> are mirror-symmetrical, the bottom surface of each first brush member <NUM> can be inserted in the first mounting groove <NUM>, and the bottom surface of each second brush member <NUM> can be inserted in the second mounting groove <NUM>, whereby the manufacturing cost of the brushroll <NUM> can be reduced, the installation thereof is facilitated, and the efficiency is high.

Specifically, the robot vacuum cleaner <NUM> further includes a motor rotating cover <NUM>, the motor rotating cover <NUM> is connected with the motor, and the motor rotating cover <NUM> can be driven to rotate when the motor rotates. In addition, the brushroll <NUM> further includes a first end cover <NUM> and a second end cover <NUM>, the first end cover <NUM> is connected with the motor rotating cover <NUM> and the first roller <NUM>, and the second end cover <NUM> is connected with the second roller <NUM>.

The robot vacuum cleaner <NUM> further includes a side brush <NUM> (not illustrated). The cleaner body <NUM> may be formed in a circular or substantially square shape, and the cleaner body <NUM> may be a plastic cleaner body. A front side of the cleaner body <NUM> can be provided with a bumper (not illustrated), and a spring can be provided between the bumper and the cleaner body <NUM>, such that the spring can buffer a collision force exerted on the robot vacuum cleaner <NUM> after the cleaner body <NUM> collides with any barriers.

A dust cup (not illustrated) can be provided in the cleaner body <NUM> and have at least one layer of filtration structure. A dust suction port (not illustrated) is provided in a bottom surface of the cleaner body <NUM>, and can be in communication with the dust cup. A vacuum motor for generating a negative pressure can be arranged at a rear side of the dust cup, and under the action of the vacuum motor, dust can be sucked into the dust cup from the dust suction port. After a user uses the robot vacuum cleaner <NUM> for a certain period of time, the dust cup can be taken out from the cleaner body <NUM> of the robot vacuum cleaner <NUM>, and the dust can be dumped. Meanwhile, the user can also regularly clean the dust cup and the filtration structure.

A wheel (not illustrated) can be provided at each of two sides of the dust cup, and each wheel can be driven by a separate drive motor (not illustrated). In front of a middle position of the two wheels, an omni-directional wheel having support and steering functions can also be provided. However, the present disclosure is not limited thereto.

The side brush <NUM> can be provided to a bottom of the cleaner body <NUM> and located at a front side of the two wheels. The side brush <NUM> can be driven by a separate motor. The side brush <NUM> can collect dust at the bottom of the cleaner body <NUM> and the sides of the cleaner body <NUM> to the dust suction port, so that the dust can be sucked into the dust cup more efficiently.

Reference throughout this specification to "certain embodiments," "an embodiment," "some embodiments," "an exemplary embodiment," "an example," "specific examples" or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention.

Thus, the appearances of the above phrases throughout this specification are not necessarily referring to the same embodiment or example of the present invention. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

In addition, terms such as "first" and "second" are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated technical features. Thus, the feature defined with "first" and "second" may comprise one or more of this feature. In the description of the present invention, "a plurality of" means two or more than two, unless specified otherwise.

Claim 1:
A brushroll (<NUM>) for a robot vacuum cleaner (<NUM>), comprising:
a first roller (<NUM>) and a second roller (<NUM>), the first roller (<NUM>) and the second roller (<NUM>) being mirror-symmetrical with respect to an axis perpendicular to the brushroll (<NUM>) and are coaxially arranged, the first roller (<NUM>) being provided with a plurality of first mounting grooves (<NUM>) spaced apart from each other and arranged along a circumferential direction of the first roller (<NUM>), the second roller (<NUM>) being provided with a plurality of second mounting grooves (<NUM>) spaced apart from each other and arranged along a circumferential direction of the second roller (<NUM>);
a first brush member (<NUM>) inserted in the first mounting groove (<NUM>); and
a second brush member (<NUM>) inserted in the second mounting groove (<NUM>),
wherein the first mounting groove (<NUM>) is a T-shaped groove, and the second mounting groove (<NUM>) is a T-shaped groove,
the brushroll (<NUM>) further comprising a connecting member (<NUM>) that connects the first roller (<NUM>) and the second roller (<NUM>) and is configured to limit relative rotation of the first roller (<NUM>) and the second roller (<NUM>),
characterized in that the connecting member (<NUM>) comprises a disc body (<NUM>), a first snap block (<NUM>), and a second snap block (<NUM>), and the first snap block (<NUM>) and the second snap block (<NUM>) are arranged on two opposite sides of the disc body (<NUM>) respectively; the first roller (<NUM>) is provided with a first snap groove (<NUM>), while the second roller (<NUM>) is provided with a second snap groove (<NUM>); the first snap block (<NUM>) is snap-fitted in the first snap groove (<NUM>), and the second snap block (<NUM>) is snap-fitted in the second snap groove (<NUM>), wherein the first snap grooves (<NUM>) are arranged along the circumference of the first roller (<NUM>) between the first mounting grooves (<NUM>) and the second snap grooves (<NUM>) are arranged along the circumference of the second roller (<NUM>) between the second mounting grooves (<NUM>).