The present disclosure is a national phase application of International Application No. PCT/CN2019/078666, filed on Mar. 19, 2019, which claims the priority of Chinese Application No. 201920125075.0, filed in the Chinese Patent Office on Jan. 24, 2019, the entireties of which are herein incorporated by reference.
The present disclosure relates to a field of cleaning appliances, and more particularly to a roller brush assembly and a cleaning device.
A cleaning device in related art, such as a sweeper, may adopt a sweeping mode of a fan sucking garbage on the ground, or a sweeping mode of a roller brush sweeping and the fan sucking simultaneously. In the two sweeping modes, a rubber strip or bristle strip is usually arranged at an edge of a suction port of the cleaning device as a sealing member to fit the ground, to seal a working area, to improve vacuum degree at the suction port and ensuring sweeping capacity of the cleaning device.
The sealing member is arranged at an edge of a rear side of the suction port along the moving direction. In the moving and sweeping process, the sealing member slidably rubs the ground. If the garbage is not sucked into the suction port in one time or dropped out of the suction port, the garbage will fall at a front of the sealing member and be pushed to move on the ground by the sealing member or be left away from the sealing member and remain in place, which will affect the cleaning effect.
In the view of this, the present disclosure provides a roller brush assembly and a cleaning device to solve the problem that garbage may not be continuingly removed after not being sucked in one time.
Embodiments of the present disclosure describe a roller brush assembly for a cleaning device includes a main roller brush, an electric motor configured to drive the main roller brush to rotate to sweep a surface to be cleaned, an auxiliary roller brush driven by the main roller brush to rotate and sweep the surface to be cleaned towards the main roller brush.
In one embodiment, the auxiliary roller brush is arranged at a rear of the main roller brush along a moving direction of the cleaning device.
In one embodiment, the main roller brush includes a rotatable main roller brush body driven by the electric motor; and a sweeping member extending outward from a surface of the main roller brush body to sweep the surface to be cleaned.
In one embodiment, the auxiliary roller brush includes an auxiliary roller brush body, and a plurality of protrusions spaced apart from each other on a surface of the auxiliary roller brush body to sweep the surface to be cleaned, the sweeping member contacts and pushes the protrusion to drive the auxiliary roller brush body to rotate in a direction opposite to rotation of the main roller brush body.
In one embodiment, the auxiliary roller brush body is an elastic body and/or the protrusion is an elastic protrusion.
In one embodiment, the auxiliary roller brush also includes a plurality of flexible supports. The auxiliary roller brush body is provided with an inner cavity. The flexible support is arranged in the inner cavity, and an end of the flexible support is connected with a wall surface of the inner cavity.
In one embodiment, the other end of the flexible support is a free end. The free ends of the plurality of flexible supports are combined to form a mounting cavity, and the mounting cavity is configured to mount a connecting shaft that connects the auxiliary roller brush body.
In one embodiment, the free end is in an arc shape, and the free end of each flexible support has the same curvature.
In one embodiment, connecting points between the flexible supports and the inner cavity are distributed evenly along a circumferential direction of the inner cavity.
The present disclosure also provides a cleaning device which includes the above roller brush assembly.
In the roller brush assembly and the cleaning device provided in the present disclosure, the main roller brush is rotated to sweep the surface to be cleaned, the auxiliary roller brush is provided and rotated under the driving of the main roller brush, and the auxiliary roller brush sweeps the surface to be cleaned along the direction towards the main roller brush. In this way, the garbage that is not swept by the main roller brush or the garbage that is not sucked into the suction port by the cleaning device is swept again into the range that the main roller brush may sweep, and the main roller brush sweeps again for suction by the suction port, which avoids the problem that the garbage dropping in the process of cleaning affects the cleaning effect, to improve the cleaning quality and efficiency.
The drawings described below are merely some embodiments of the present disclosure.
1. roller brush assembly; 11. main roller brush; 111. main roller brush body; 112. sweeping member; 12. auxiliary roller brush; 121. auxiliary roller brush body; 122. protrusion; 124. flexible support; 125. inner cavity; 126. free end; 127. mounting cavity; 21. housing; 22. suction port.
As illustrated in
The surface to be cleaned may be a variety of surfaces that need to be cleaned, including surfaces of ground, wall, door, window, etc. Texture of the surface to be cleaned may be selected from different materials, including carpet, tile, glass, wood, bamboo, rubber, etc. The surface to be cleaned may be a flat surface or a curved surface.
As illustrated in
As illustrated in
The auxiliary roller brush 12 is arranged close to an edge of the suction port 22. Driven by the main roller brush 11, the auxiliary roller brush 12 rotates in a direction opposite to the rotation of the main roller brush, thus sweeping the surface to be cleaned in the direction of the main roller brush 11, and sweeping the garbage which is not swept away by the main roller brush 11 and is not sucked by the suction port 22 into the sweeping area of the main roller brush again, the garbage is sucked by the suction portion 22, which effectively solves the problem that the garbage may not be continuingly sucked after not being sucked in one time and prevents the garbage that is not sucked in one time from being pushed all the time to pollute the ground or from falling to the ground, to improve the cleaning quality and efficiency of the cleaning device.
In one embodiment, since garbage dropping from suction port 22 may be at the front and/or the rear of the main roller brush 11, the position of the auxiliary roller brush 12 may be at the front and/or the rear of the main roller brush. As illustrated in
In one embodiment, as illustrated in
As illustrated in
In the present embodiment, each of the arranged protrusions 122 may contact with the sweeping member 112 and drive the auxiliary roller brush body 121 to rotate in the direction opposite to rotation of the main roller brush body 111 under the pushing of the sweeping member 112. In this way, the electric motor drives the main roller brush body 111 to rotate, the sweeping member 112 may follow to rotate. Since the sweeping member 112 may contact with the protrusion 122, the rotating sweeping member 112 may push the protrusion 122 and then drive the auxiliary roller brush body 121 to rotate in the direction opposite to rotation of the main roller brush body 111, and the protrusion 122 is driven to rotate synchronously during rotation of the sweeping member 112. In this way, the main roller body 111 and the auxiliary roller body 121 share a common driving member to rotate without adding any other components, thus simplifying components and saving cost. The protrusion 122 rotates under the push of the sweeping member 112. Due to the arrangement of the protrusion, it is beneficial to sweep the garbage on the surface to be cleaned, the garbage that is not sucked by the suction port 22 and falls in a sweeping area of the auxiliary roller brush 12 is swept again to the side of the main roller brush 11 and sucked again by the suction port 22, which improves the cleaning quality and efficiency.
In one embodiment, in the embodiments of the present disclosure, the auxiliary roller brush body 121 is an elastic body and/or the protrusion 122 is an elastic protrusion. The auxiliary roller brush body 121 and/or the protrusion 122 are arranged to be made of elastic material, the gap between the rear edge of the suction port 22 and the surface to be cleaned may be minimized or even closed by the elastic deformation under pressure during movement of the cleaning device, which raises vacuum degree at the suction port 22, to ensure the cleaning quality and efficiency.
In one embodiment, as illustrated in
In one embodiment, the other end of the flexible support 124 is a free end 126. Then, the elastic deformation range of the auxiliary roller brush body 121 is relatively larger in a pressed state, to ensure the fit degree with the surface to be cleaned. In other embodiments, the other end of the flexible support 124 may also be connected with each other or to the wall surface of the inner cavity 125. In embodiments of the present disclosure, the free ends 126 of a plurality of the flexible supports 124 are combined to define a mounting cavity 127, as illustrated in
In one embodiment, each free end 126 may be in an arc shape, that is, the three dimensional shape of the free end 126 is curved and have a radian, and the surface of the free end 126 is an arc surface. Moreover, the curvature of the free end 126 of each flexible support 124 is the same, and that is, the bending degree of the arc surface for each free end 126 is the same, to ensure that the shape of mounting cavity 127 formed by the combination of each free end 126 is regular and may be matched and connected with the connecting shaft. In the embodiment of the present disclosure, each free end 126 is arranged at intervals and not connected with each other, and that is, the mounting cavity 127 is not a circumferentially closed empty cavity. In other embodiments, each free end 126 may also be connected together to define a circumferentially closed empty cavity.
As illustrated in
Embodiments of the present disclosure also provide a cleaning device, which includes the above roller brush assembly 1. There are a plurality of kinds of cleaning devices, including sweeping robot, vacuum cleaners and other types.
Since the auxiliary roller brush 12 in the above roller brush assembly 1 may rotate, and its rotating direction is opposite to the rotating direction of the main roller brush 11, the garbage may be swept towards the main roller brush 11. Hence, the garbage that is swept by the main roller brush 11 but not sucked is swept again back into the area directly opposite to the suction port 22 for re-suction, which avoids the problem that the garbage dropping in the process of cleaning affects the cleaning effect, to improve the cleaning quality and efficiency. It solves the problem that the garbage may not be sucked again after it falls to the ground without being sucked in one time by the suction port in the arrangement of a traditional cleaning device.
Number | Date | Country | Kind |
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201920125075.0 | Jan 2019 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2019/078666 | 3/19/2019 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2020/151070 | 7/30/2020 | WO | A |
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Entry |
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OA for EP application 19911018.0. |
OA for JP application 2019-566356. |
International Search Report dated Jul. 24, 2019 in the corresponding International Application No. PCT/CN2019/078666. |
Number | Date | Country | |
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20210401256 A1 | Dec 2021 | US |