CN218009610U - Cleaning brush and cleaning robot - Google Patents

Abstract

The application discloses cleaning brush and cleaning machines people, wherein the cleaning brush includes: a body, a plurality of first blades and a plurality of second blades; the body is cylindrical; the first blades and the second blades are fixed on the outer peripheral surface of the body and are alternately distributed at intervals along the circumferential direction of the body, and the first blades and the second blades extend along the axial direction of the body; the outer surface of the first blade is provided with a plurality of first bulges, the outer surface of the second blade is provided with a plurality of second bulges, and the first bulges and the second bulges are alternately distributed at intervals along the axial direction of the body. Through setting up first arch and second arch for first blade and second blade all only have partial surface and ground contact, have reduced the area of contact of first blade and second blade and ground, have promoted and have cleaned the effect.

Description

Cleaning brush and cleaning robot

Technical Field

The application relates to the technical field of intelligent electrical appliances, in particular to a cleaning brush and a cleaning robot.

Background

At present, intelligent household appliances have become an indispensable part of life, wherein a cleaning robot can clean the ground, and further reduce the labor burden of a user, so that the intelligent household appliances are popular.

The bottom of the cleaning robot is provided with the cleaning brush, and when the cleaning robot moves, the cleaning brush rotates to rub with the ground so as to clean the dust and other garbage on the ground. However, in the current cleaning robot, the design of the cleaning brush directly affects the cleaning effect.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a cleaning brush and cleaning machines people improves and cleans efficiency, promotes user's experience and feels.

The present application provides in a first aspect a cleaning brush comprising: a body, a plurality of first blades and a plurality of second blades; the body is cylindrical; the first blades and the second blades are fixed on the outer peripheral surface of the body and are alternately distributed at intervals along the circumferential direction of the body, and the first blades and the second blades extend along the axial direction of the body; the surface of first blade is equipped with a plurality of first archs, and the surface of second blade is equipped with a plurality of second archs, and the axial interval distribution in turn of a plurality of first archs and a plurality of second archs along the body.

In this application, the crisscross setting of circumference along the body of a plurality of first blades and a plurality of second blades, a plurality of first archs and a plurality of second arch distribute in the axial of body is crisscross, and when the cleaning brush rotated in order to clear up ground, especially when soft ground such as clearance carpet, when being provided with first bellied first blade and clearing up ground, the bellied second blade of second was provided with and is supplemented the clearance to ground. In the same way, when being provided with the bellied second blade of second and clearing up ground, supply the clearance on ground being provided with first bellied first blade, from this, prevent that rubbish from remaining, and then promoted clean effect, improved user experience.

In addition, when cleaning ground, through setting up first arch and second arch for first blade and second blade all have partial surface and ground contact, can form certain clearance. In this way, the gap between the first blade and the second blade can guide long and thin garbage such as hair in the rotating process, and the garbage can be guided to the accommodating part under the action of suction force, so that the cleaning efficiency is improved. In addition, the first protrusion and the second protrusion are arranged, so that the outer surfaces of the first blade and the second blade are partially contacted with the ground, the contact area between the first blade and the ground and the contact area between the second blade and the ground are reduced, the noise is reduced, and the user experience is improved. In addition, the contact area between the first blade and the ground and the contact area between the second blade and the ground are reduced, the abrasion of the first blade and the second blade can be reduced, and the service life of the first blade and the service life of the second blade are prolonged.

In some embodiments, the height of the first protrusion relative to the outer surface protrusion of the first blade is between 0.5 mm and 1.5 mm.

In some embodiments, the height of the second protrusion relative to the outer surface protrusion of the second blade is between 0.5 mm and 1.5 mm.

In some embodiments, the first lobe has a first edge distal from the body, and a distance between a center of the first lobe and the first edge is between 0.5 millimeters and 2.5 millimeters.

In some embodiments, the thickness of the first edge is greater than the thickness of the remaining area of the first blade.

In some embodiments, the difference between the thickness of the first edge and the thickness of the remaining area of the first blade is between 0.3 mm and 3 mm.

In some embodiments, the second leaf has a second edge distal from the body, and a distance between a center of the second projection and the second edge is between 0.5 millimeters and 2.5 millimeters.

In some embodiments, the first blade and the second blade are both inclined with respect to the radial direction of the body, the height dimension of the first blade in the inclined direction is H1, the height dimension of the second blade in the inclined direction is H2, H1 is greater than H2, and the difference between H1 and H2 is between 2mm and 5 mm.

In some embodiments, the first protrusion is configured to contact with the floor when the cleaning brush cleans the floor, so that a first gap is generated between the first blade and the floor. The rotatory in-process of cleaning brush, after the air current got into first clearance, the velocity of flow increased rapidly, and atmospheric pressure reduces rapidly, forms the pressure differential with the external world, and this pressure differential acts on first kink for first kink receives decurrent effort, and first protruding better and ground contact this moment can promote and clean the effect.

In some embodiments, the second protrusion is configured to contact the floor when the cleaning brush cleans the floor, so that a second gap is generated between the second blade and the floor. The rotatory in-process of cleaning brush, after the air current got into the second clearance, the velocity of flow increased rapidly, and atmospheric pressure reduces rapidly, forms the pressure differential with the external world, and this pressure differential acts on the second kink for the second kink receives decurrent effort, and the protruding better and ground contact of second this moment can promote and clean the effect.

In some embodiments, at least a portion of the first plurality of projections is located in a central region of the first vane in an axial direction of the body. Specifically, the first blade comprises a first side area, a first middle area and a second side area which are sequentially distributed along the axial direction of the body, and the lengths of the first side area, the first middle area and the second side area along the axial direction of the body are equal, in other words, the respective lengths of the first side area, the first middle area and the second side area are respectively one third of the length of the first blade. The lengths of the first side region, the first middle region, and the second side region may also be unequal, e.g., the lengths of the first side region and the second side region are equal, and the length of the first middle region is less than the length of the first side region. Alternatively, the length of the first side region is greater than the length of the first central region, which is greater than the length of the second side region. Alternatively, the length of the first side region is less than the length of the first central region, which is less than the length of the second side region.

The plurality of first protrusions may be all located in the first central region. Therefore, the contact area between the first middle area and the ground is small, and the noise generated when the cleaning brush cleaning robot works can be reduced; the contact area between the first side area and the ground is large, so that the cleaning effect can be improved, and the ground is cleaner. Alternatively, a portion of the first protrusion is located in the first middle region, another portion of the first protrusion is located in the first side region, and another portion of the first protrusion is located in the second side region. Therefore, the contact point between the first blade and the ground is uniform, the contact area is moderate, noise can be reduced, and the cleaning effect can be improved. Alternatively, a portion of the first protrusion is located in the first middle region and another portion of the first protrusion is located in the first side region. Alternatively, a portion of the first protrusions are located in the first middle region and another portion of the first protrusions are located in the second side region.

In some embodiments, at least a portion of the second plurality of projections is located in a central region of the second blade in the axial direction of the body.

In some embodiments, the first protrusions are uniformly arranged along the axial direction of the body; the second protrusions are evenly distributed along the axial direction of the body. Therefore, the contact points of the first blade and the second blade with the ground are uniform, and the cleaning effect can be increased.

In some embodiments, the first leaf has a first edge distal to the body, and the second leaf has a second edge distal to the body; the distance between the first edge and the outer peripheral surface of the body is larger than the distance between the second edge and the outer peripheral surface of the body. Therefore, when the cleaning brush rotates, the length of the first bent part formed by deformation of the first blade is larger than that of the second bent part formed by deformation of the second blade, the friction force between the first protrusion and the ground is larger than that between the second protrusion and the ground, the first protrusion ensures that the ground is well cleaned, the second protrusion plays a role in assisting cleaning, and meanwhile, noise can be reduced.

In some embodiments, the first blade and the second blade are both inclined with respect to the radial direction of the body, and the inclination angles are the same; the height dimension of the first blade in the inclination direction is larger than that of the second blade in the inclination direction, so that the distance between the first edge and the outer peripheral surface of the body is larger than that between the second edge and the outer peripheral surface of the body.

In some embodiments, the first blade and the second blade are both inclined with respect to a radial direction of the body, and an inclination angle of the first blade is smaller than an inclination angle of the second blade; the height dimension of the first blade in the inclination direction is equal to the height dimension of the second blade in the inclination direction, so that the distance between the first edge and the outer peripheral surface of the body is larger than the distance between the second edge and the outer peripheral surface of the body.

In some embodiments, the first vane has a first edge remote from the body, the first edge having a thickness greater than a thickness of a remaining area of the first vane. Because of being close to first edge more, the frictional force that produces with ground contact is bigger, therefore the thickness of first edge is greater than the thickness of remaining region, can increase the structural strength of first edge for first edge is more wear-resisting, and then prolongs the life-span of first blade.

A second aspect of the present application provides a cleaning robot including a main body and the cleaning brush of any one of the first aspects of the present application, the cleaning brush being rotatably connected to the main body.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings required to be used in the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of a cleaning robot provided in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a cleaning robot at another angle according to an embodiment of the present disclosure.

Fig. 3 is a schematic view of an internal structure of the cleaning robot shown in fig. 1.

Fig. 4 is a schematic view of the structure of the cleaning brush shown in fig. 1.

Fig. 5 is a schematic view of the cleaning brush shown in fig. 1 from another perspective.

Fig. 6 is a schematic view of the cleaning brush shown in fig. 1 from a further perspective.

Fig. 7 is an enlarged structural view of a first blade of the cleaning brush shown in fig. 4 in an operating state.

Fig. 8 is an enlarged structural view illustrating a second blade of the cleaning brush shown in fig. 4 in an operating state.

Fig. 9 is a schematic view of the structure of a first blade of the cleaning brush shown in fig. 4.

Fig. 10 is a schematic view of the structure of a second blade of the cleaning brush shown in fig. 4.

Fig. 11 is a partially enlarged structural view of the cleaning brush shown in fig. 4.

Description of reference numerals: 100-main body, 101-outer shell, 102-chassis, 103-buffer, 104-cover plate, 105-side plate, 106-flip, 107-receiving frame, 108-installation cavity, 109-air inlet, 200-receiving member, 300-controller, 400-fan, 500-cleaning brush, 510-body, 520-first blade, 520 a-first bending part, 521-first side region, 522-first middle region, 523-second side region, 524-first edge, 525-first root, 530-second blade, 530 a-second bending part, 531-third side region, 532-second middle region, 533-fourth side region, 534-second edge, 535-second root, 540-first bulge, 550-second bulge, 560-first gap, 570-second gap, 500 a-side cleaning brush, 600-front wheel, 610-left wheel, 620-right wheel, 700-battery, 800-side cleaning motor, 810-middle cleaning motor.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The embodiment of the application provides a cleaning robot, which is a handheld dust collector or a sweeper and other equipment.

Referring to fig. 1 and 2, a cleaning robot 1000 according to an embodiment of the present disclosure includes a main body 100, a container 200, a controller 300, a blower 400, a cleaning brush 500, an edge brush 500a, a front wheel 600, a left wheel 610, a right wheel 620, a battery 700, an edge brush motor 800, a middle brush motor 810, a left wheel motor (not shown), a right wheel motor, and the like.

Referring to fig. 1, for ease of understanding, the direction of the cleaning robot 1000 is defined by three axes perpendicular to each other in pairs, an X axis, a Y axis, and a Z axis, wherein the X axis, the Y axis approximately bisects the cleaning robot 1000, the X axis substantially coincides with a horizontal central axis of the cleaning robot 1000, the Y axis substantially coincides with a central axis in the front-rear direction of the cleaning robot 1000, the X axis is a left-right direction reference axis, X1 is a direction extending to the left along the X axis, and X2 is a direction extending to the right along the X axis. The Y axis is a reference axis of the forward and backward movement direction, Y1 is the forward movement direction along the Y axis, and Y2 is the backward movement direction along the Y axis. The Z-axis is a reference axis in the thickness direction, Z1 is a direction extending upward along the Z-axis, and Z2 is a direction extending downward along the Z-axis.

In some embodiments, wherein the main body 100 comprises an outer casing 101, a chassis 102 and a buffer 103, the outer casing 101 comprises a cover plate 104, a side plate 105 and a flip cover 106, the cover plate 104 is substantially circular, the side plate 105 is substantially annular, and one end of the side plate 105 is fixedly connected with the outer periphery of the cover plate 104; the flip cover 106 is substantially semicircular and stacked on the cover plate 104, and is rotatably connected to the cover plate 104. The chassis 102 is substantially circular for mounting the left and right wheels 610 and 620 and the cleaning brush 500, the edge brush 500a, etc.

The outer casing 101 covers the chassis 102, the cover plate 104 is spaced from the chassis 102, and the side plate 105 surrounds the chassis 102. The cover plate 104 and the flip cover 106 are located on the top side of the main body 100, and the chassis 102 is located on the bottom side of the main body 100. The bumper 103 has a substantially arc shape, and has a substantially same arc shape as the side plate 105, the bumper 103 is disposed around a portion of the side plate 105 and connected to the side plate 105 by an elastic member, and the bumper 103 is located at the front side of the main body 100. When the cleaning robot moves forward until the bumper 103 hits an obstacle, the elastic member is compressed, so that the bumper 103 moves toward the side plate 105 to protect the cleaning robot. In other embodiments, the bottom plate 102 may be D-shaped, triangular, etc., other shapes, etc., and the shapes of the flip 106, the cover plate 104, and the side plates 105 may be changed to fit the shape of the bottom plate 102. The shape of the chassis 102 is not limited in this application.

In general, the outer case 101 may be integrally formed, and the outer case 101, the chassis 102, and the damper 103 are separately formed and assembled into the body 100. In other embodiments, the outer housing 101 and the chassis 102 are integrally formed, and the damper 103 is assembled to the outer housing 101 to form the body 100. In other embodiments, the lid 106, the cover 104 and the side plates 105 of the outer housing 101 are formed separately and then fixedly connected to the outer housing 101 by welding or fastening.

Referring to fig. 3, the main body 100 further includes a receiving frame 107, the receiving frame 107 is located in the cavity of the main body 100, two opposite ends of the receiving frame 107 along the Z direction are respectively connected to the base plate 102 and the cover plate 104, the cover plate 104 is provided with an opening, the receiving frame 107 is provided with an installation cavity 108 corresponding to and communicated with the opening, an air inlet 109 is formed in the cavity wall of the installation cavity 108, and the installation cavity 108 is used for installing the receiving member 200.

The storage part 200, the controller 300, the blower 400, the cleaning brush 500, the edge brush 500a, the front wheel 600, the left wheel 610, the right wheel 620, the battery 700, the edge brush motor 800, the middle brush motor 810, the left wheel motor and the right wheel motor are all mounted on the chassis 102, the front wheel 600, the left wheel 610 and the right wheel 620 are located at the bottom of the main body 100, the controller 300, the blower 400, the battery 700, the edge brush motor 800, the middle brush motor 810, the left wheel motor and the right wheel motor are all located in a cavity (a cavity formed when the outer shell 101 is covered on the chassis 102) inside the main body 100, and the cleaning brush 500 and the edge brush 500a are mounted at the bottom of the chassis 102 and at least partially extend out of the chassis 102 to be in contact with the ground so as to clean.

The direction from the front wheel 600 to the receptacle 200 of the cleaning robot is a front-rear direction, the direction from the left wheel 610 to the right wheel 620 is a left-right direction, the direction from the top to the bottom is a thickness direction (also called a vertical direction), the bottom is the side where the left wheel 610 and the right wheel 620 are located, and the top is the side away from the left wheel 610 and the right wheel 620.

Among them, the controller 300 is used to control the blower 400, the side-sweep motor 800, the middle-sweep motor 810, the left wheel motor, and the right wheel motor. The battery 700 is used to supply electric power to the controller 300, the blower fan 400, the side-scan motor 800, the mid-scan motor 810, the left-wheel motor, the right-wheel motor, and the like. The side-sweep motor 800 is used to rotate the side-sweep brush 500a to perform a cleaning operation on the side-sweep brush 500a, and the middle-sweep motor 810 is used to rotate the cleaning brush 500 to perform a cleaning operation on the cleaning brush 500. The left wheel motor is used for driving the left wheel 610 to rotate, the right wheel motor is used for driving the right wheel 620 to rotate, and the left wheel 610 and the right wheel 620 rotate to drive the cleaning robot to move. The front wheels 600 are universal wheels, which can increase the mobility of the cleaning robot.

The blower 400 is used for providing an air flow which feeds the garbage swept by the cleaning brush 500 and the edge brush 500a into the receiving member 200 from the air inlet 109, and the air flow provided by the blower 400 is also used for making the space in the receiving member 200 in a negative pressure state. The receiving member 200 may be a dust box or a receiving bag for collecting the garbage swept by the side-sweep brush 500a and the cleaning brush 500.

In some embodiments, referring to fig. 4 and 5, the cleaning brush 500 includes: a body 510, a plurality of first blades 520, and a plurality of second blades 530. The body 510 may be cylindrical.

The plurality of first blades 520 and the plurality of second blades 530 are fixed to an outer circumferential surface of the body 510, and are alternately spaced apart in a circumferential direction of the body 510. The first and second blades 520 and 530 each extend in the axial direction of the body 510. The outer surface of the first blade 520 is provided with a plurality of first protrusions 540. The outer surface of the second blade 530 is provided with a plurality of second protrusions 550. The plurality of first protrusions 540 and the plurality of second protrusions 550 are alternately spaced along the axial direction of the body 510.

The first blade 520 and the second blade 530 are both made of flexible rubber materials and are both in a long strip shape. Referring to fig. 6, the height H of the first protrusion 540 relative to the outer surface protrusion of the first blade 520 is between 0.5 mm and 1.5 mm, such as 0.5 mm, 0.7 mm, 1 mm, 1.3 mm, 1.5 mm, and the like. The height of the second protrusion 550 relative to the outer surface of the second blade 530 is between 0.5 mm and 1.5 mm, such as 0.5 mm, 0.7 mm, 1 mm, 1.3 mm, 1.5 mm, and the like. The first blade 520 and the second blade 530 each have a thickness M of approximately 0.7 mm and a hardness of between 30 and 70 shore. When the ground is cleaned, the first protrusion 540 and the second protrusion 550 are arranged, so that part of the outer surface of each of the first blade 520 and the second blade 530 contacts with the ground, and a certain gap can be formed between the blades and the ground. In this way, the gap between the first blade 520 and the second blade 530 can guide long and thin garbage such as hair during rotation, and the garbage can be guided to the housing 200 by suction force, thereby improving cleaning efficiency. Meanwhile, a certain gap is formed, so that the contact between the blades and the ground is reduced, the friction is reduced, and partial noise can be reduced. When the height of the protrusions on the blades is set to be 0.5-1.5 mm, a certain enough clearance can be formed, and meanwhile resistance caused by overlong protrusions can be reduced.

When the cleaning robot works, the controller 300 controls the middle sweeping motor 810 to work, the middle sweeping motor 810 drives the cleaning brush 500 to rotate, the ground presses the first blade 520 and the second blade 530 in the rotating process of the cleaning brush 500, so that the first blade 520 and the second blade 530 are deformed, at this time, the edge part of the first blade 520 is bent towards one side away from the rotating direction of the cleaning brush 500 to form a first bent part 520a, the length of the first bent part 520a is about 2mm, and the first protrusion 540 is located on one side surface of the first bent part 520a towards the ground. An edge portion of the second blade 530 is bent toward a side away from the rotation direction of the cleaning brush 500 to form a second bent portion 530a. The second protrusion 550 is located on a side surface of the second bent portion 530a facing the ground. A part of the outer surface of the first blade 520 contacts the ground, a part of the outer surface of the second blade 530 contacts the ground, a part of the first protrusions 540 of the plurality of first protrusions 540 contacts the ground, and a part of the second protrusions 550 of the plurality of second protrusions 550 contacts the ground, thereby generating friction and electrostatic adsorption force to sweep the garbage on the ground into the container 200.

As can be seen from the above, when cleaning the ground, a certain gap can be formed by providing the first protrusion 540 and the second protrusion 550 such that a part of the outer surface of each of the first blade 520 and the second blade 530 contacts with the ground. In this way, the gap between the first blade 520 and the second blade 530 can guide long and thin garbage such as hair during rotation, and the garbage can be guided to the housing 200 by the suction force, thereby improving cleaning efficiency. Simultaneously through setting up first arch 540 and second arch 550 for first blade 520 and second blade 530 all have partial surface and ground contact, have reduced the area of contact of first blade 520 and second blade 530 with ground, and then have reduced the noise, have promoted user experience. In addition, the contact area between the first blade 520 and the second blade 530 and the ground is reduced, and the abrasion of the first blade 520 and the second blade 530 is reduced, thereby prolonging the life of the first blade 520 and the second blade 530. In addition, the plurality of first blades 520 and the plurality of second blades 530 are staggered along the circumferential direction of the body 510, the plurality of first protrusions 540 and the plurality of second protrusions 550 are staggered in the axial direction of the body 510, and when the cleaning brush 500 rotates to clean the ground, especially when soft ground such as carpet is cleaned, when the first blades 520 provided with the first protrusions 540 clean the ground, the second blades 530 provided with the second protrusions 550 additionally clean the ground. Similarly, when the second blade 530 provided with the second protrusion 550 cleans the ground, the first blade 520 provided with the first protrusion 540 replenishes and cleans the ground, thereby preventing the garbage from being remained and further improving the cleaning effect.

In some embodiments, referring to fig. 7, the first protrusion 540 is in contact with the ground, and the first bent part 520a is not in contact with the ground, so that a first gap 560 is formed between the ground and the first bent part 520 a. During the rotation process of the cleaning brush 500, after the airflow enters the first gap 560, the flow rate is rapidly increased, the air pressure is rapidly reduced, when the garbage at the position of the first gap 560 is taken away, a pressure difference is formed between the garbage and the outside, the pressure difference acts on the first bent part 520a, so that the first bent part 520a receives a downward acting force, and at the moment, the first protrusion 540 is better in contact with the ground, and the cleaning effect can be improved. In addition, the first blade 520 and the second blade 530 are staggered along the circumferential direction of the cleaning brush 500, and the first protrusion 540 and the second protrusion 550 are staggered along the axial direction of the cleaning brush 500, so that the residual garbage at the first gap 560 can be cleaned by the second blade 530, and the cleaning effect can be enhanced.

In some embodiments, referring to fig. 8, the second protrusion 550 is in contact with the ground, and the second bent portion 530a is not in contact with the ground, so that a second gap 570 is formed between the ground and the second bent portion 530a. In the rotating process of the cleaning brush 500, after the airflow enters the second gap 570, the flow rate is rapidly increased, the air pressure is rapidly reduced, and when taking away the garbage at the second gap 570, a pressure difference is formed between the garbage and the outside, and the pressure difference acts on the second bent portion 530a, so that the second bent portion 530a receives a downward acting force, and at this time, the second protrusion 550 is better contacted with the ground, and the cleaning effect can be improved. In addition, the first blade 520 and the second blade 530 are staggered along the circumferential direction of the cleaning brush 500, and the first protrusion 540 and the second protrusion 550 are staggered along the axial direction of the cleaning brush 500, so that the residual garbage at the second gap 570 can be cleaned by the first blade 520, and the cleaning effect can be enhanced.

In some embodiments, referring to fig. 9, the first blade 520 includes a first side region 521, a first middle region 522 and a second side region 523 which are sequentially distributed along the axial direction of the body 510, and the lengths of the first side region 521, the first middle region 522 and the second side region 523 along the axial direction of the body 510 are equal, in other words, the lengths of the first side region 521, the first middle region 522 and the second side region 523 are each one third of the length of the first blade 520. In other embodiments, the lengths of the first side area 521, the first middle area 522, and the second side area 523 may not be equal, for example, the lengths of the first side area 521 and the second side area 523 are equal, and the length of the first middle area 522 is less than the length of the first side area 521. Alternatively, the length of the first side region 521 is greater than the length of the first central region 522, and the length of the first central region 522 is greater than the length of the second side region 523. Alternatively, the length of the first side region 521 is less than the length of the first middle region 522, and the length of the first middle region 522 is less than the length of the second side region 523.

The first protrusions 540 are uniformly distributed on the first side area 521, the first middle area 522 and the second side area 523. The distance L1 between two adjacent first protrusions 540 is between 11 mm and 17 mm, for example, 11 mm, 13 mm, 15 mm, 17 mm, and the like. Therefore, the contact point of the first blade 520 and the ground is uniform, the contact area is moderate, the cleaning effect is improved, and meanwhile, the noise can be reduced.

In other embodiments, the debris generally collects from both sides of the blade toward the center, and the first protrusions 540 are uniformly distributed in the first middle region 522, thereby increasing the cleaning efficiency. The contact area between the first side area 521 and the second side area 523 and the ground is large, so that the sweeping effect can be improved, and the ground is cleaner. In other embodiments, the plurality of first protrusions 540 are uniformly distributed in the first middle region 522 and the first side region 521, or are uniformly distributed in the first middle region 522 and the second side region 523.

In some embodiments, referring to fig. 10, the second blade 530 includes a third side region 531, a second middle region 532, and a fourth side region 533 distributed in sequence along the axial direction of the body 510, and the lengths of the third side region 531, the second middle region 532, and the fourth side region 533 along the axial direction of the body 510 are equal, in other words, the lengths of the third side region 531, the second middle region 532, and the fourth side region 533 are each one third of the length of the second blade 530. In other embodiments, the lengths of the third side region 531, the second middle region 532, and the fourth side region 533 may also be unequal, e.g., the lengths of the third side region 531 and the fourth side region 533 are equal, and the length of the second middle region 532 is less than the length of the third side region 531. Alternatively, the third side region 531 has a length greater than the second central region 532, and the second central region 532 has a length greater than the fourth side region 533. Alternatively, the third side region 531 has a length less than the length of the second central region 532, and the second central region 532 has a length less than the length of the fourth side region 533. At least a portion of the plurality of second protrusions 550 is located at a second middle region 532 of the second blade 530 in the axial direction of the body 510.

The second protrusions 550 are uniformly distributed in the third side region 531, the second middle region 532 and the fourth side region 533. The distance L2 between two adjacent second protrusions 550 is between 11 mm and 17 mm, for example, 11 mm, 13 mm, 15 mm, 17 mm, and the like. Therefore, the contact point of the first blade 520 and the ground is uniform, the contact area is moderate, the cleaning effect is improved, and meanwhile, the noise can be reduced.

In other embodiments, the garbage generally gathers from two sides of the blade to the middle during the sweeping process, and the plurality of second protrusions 550 are uniformly distributed in the second middle region 532, thereby improving the sweeping efficiency. The contact area between the third side area 531 and the fourth side area 533 and the ground is large, so that the sweeping effect can be improved, and the ground is cleaner. In other embodiments, the plurality of second protrusions 550 are uniformly distributed in the second central region 532 and the third side region 531, or are uniformly distributed in the second central region 532 and the fourth side region 533.

In some embodiments, referring to fig. 9, the first blade 520 has a first edge 524 and a first root 525 opposite to each other, the first root 525 is fixedly connected to the outer circumferential surface of the body 510, and the first edge 524 is far away from the outer circumferential surface of the body 510. The center of the first protrusion 540 is spaced from both the first edge 524 and the first root 525. The interval is arranged between the first protrusion 540 and the first root 525, so that after the first blade 520 is deformed, at least one part of the first protrusion 540 can contact with the ground, a certain gap can be formed between the blade and the ground, a guiding effect can be generated on slender garbage such as hair, and the slender garbage can be guided to the accommodating part 200 under the action of suction force, and the cleaning efficiency is improved. Since the friction force generated by the contact with the ground is increased as the distance between the first protrusion 540 and the first edge 524 is increased, the wear of the first protrusion 540 can be reduced, and the life of the first protrusion 540 can be extended.

Specifically, the distance L3 between the center of the first protrusion 540 and the first edge 524 is between 0.5 mm and 2.5 mm, such as 0.5 mm, 0.7 mm, 0.9 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.8 mm, 2mm, 2.2 mm, 2.5 mm, and the like. When the cleaning robot 1000 operates, the front end portion of the first blade 520 contacts the ground, and thus, the distance L3 is set to be between 0.5 mm and 2.5 mm, so that the first protrusion 540 is positioned closer to the first edge 524 to function as the first protrusion 540. However, the first edge 524 of the front end of the first blade 520 may contact the ground, and in order to reduce the effect of the abrasion of the first edge 524 on the first protrusion 540, the first protrusion 540 needs to be spaced apart from the first edge 524, and thus the distance L3 between the first protrusion 540 and the first edge 524 is set to be between 0.5 mm and 2.5 mm.

In some embodiments, referring to FIG. 10, second blade 530 has a second edge 534 and a second root 535 opposite each other, second root 535 fixedly attached to the outer peripheral surface of body 510, and second edge 534 remote from the outer peripheral surface of body 510. The center of the second projection 550 is spaced from both the second edge 534 and the second root 535. The second protrusion 550 and the second root 535 have a space therebetween, so that at least a portion of the second protrusion 550 can contact the floor surface after the second blade 530 is deformed, thereby forming a certain gap between the blade and the floor surface, and thus, the blade can guide long and thin garbage such as hair, and can be guided to the receiving member 200 by suction, thereby improving cleaning efficiency. Since the friction force generated by the contact with the ground is larger as the distance between the second protrusion 550 and the second edge 534 is closer to the second edge 534, the abrasion of the second protrusion 550 can be reduced, and the life of the second protrusion 550 can be prolonged.

Specifically, the distance L4 between the center of the second protrusion 550 and the second edge 534 is between 0.5 mm and 2.5 mm, such as 0.5 mm, 0.6 mm, 0.8 mm, 1.1 mm, 1.3 mm, 1.5 mm, 1.9 mm, 2.3 mm, 2.5 mm, and the like. The front end portion of the second blade 530 contacts the ground, and thus, the distance L4 is set to be between 0.5 mm and 2.5 mm such that the second projection 550 is positioned closer to the second edge 534, thereby functioning as the second projection 550. However, the front end second edge 534 of the second blade 530 contacts the ground, and in order to reduce the effect of the abrasion of the second edge 534 on the second projection 550, the second projection 550 needs to be spaced apart from the second edge 534, so that the distance L4 between the second projection 550 and the second edge 534 is set to be between 0.5 mm and 2.5 mm.

In some embodiments, the distance between the first edge 524 and the outer periphery of the body 510 is greater than the distance between the second edge 534 and the outer periphery of the body 510. Therefore, when the cleaning brush 500 rotates, the length of the first bent part 520a formed by deforming the first blade 520 is greater than the length of the second bent part 530a formed by deforming the second blade 530, the friction force between the first protrusion 540 and the ground is greater than the friction force between the second protrusion 550 and the ground, the first protrusion 540 ensures that the ground is well cleaned, the second protrusion 550 plays a role in improving the cleaning efficiency, and simultaneously, the noise can be reduced.

In some embodiments, referring to fig. 6, the first blade 520 and the second blade 530 are both inclined with respect to a radial direction of the body 510, and the inclination angles are the same. The height dimension H1 of the first blade 520 in the oblique direction is greater than the height dimension H2 of the second blade 530 in the oblique direction such that the distance between the first edge 524 and the outer circumferential surface of the body 510 is greater than the distance between the second edge 534 and the outer circumferential surface of the body 510. In order to clean the floor made of the material similar to a carpet, a certain range of blades with different heights are arranged, when in cleaning, the long blades with the long height can deeply penetrate into the carpet to clean deeply, and the blades with the short height can clean the surface. If the height size difference of the high and low blades is large, the high and low blades cannot be well matched for cleaning. Therefore, in order to fit high and low blades well, the height difference between the height dimension H1 of the first blade 520 in the tilt direction and the height dimension H2 of the second blade 530 in the tilt direction ranges between 2mm and 5 mm. The first blade 520 is a tall blade, and the second blade 530 is a short blade.

Specifically, the first blade 520 is inclined at an angle β 1 with respect to the radial direction of the body 510, and the second blade 530 is inclined at an angle β 2 with respect to the radial direction of the body 510, where β 1 and β 2 are both 40 ± 1 degrees. The first blade 520 and the second blade 530 have different height dimensions, and the first blade 520 has a different height dimension. It can be understood that the first blade 520 and the second blade 530 are inclined in the opposite direction to the rotation direction of the cleaning brush 500, and thus, when the cleaning brush 500 rotates, the bending angle of the first blade 520 and the second blade 530 is small, and the deformation amount of the first blade 520 and the second blade 530 can be reduced, thereby extending the life of the first blade 520 and the second blade 530.

In some embodiments, the first blade 520 and the second blade 530 are each inclined with respect to a radial direction of the body 510, and an inclination angle of the first blade 520 is smaller than an inclination angle of the second blade 530. The height dimension of the first blade 520 in the oblique direction is equal to the height dimension of the second blade 530 in the oblique direction such that the distance between the first edge 524 and the outer circumferential surface of the body 510 is greater than the distance between the second edge 534 and the outer circumferential surface of the body 510.

In some embodiments, referring to FIG. 11, the thickness of the first edge 524 is greater than the thickness of the remaining area of the first blade 520. The thickness difference between the first edge 524 and other areas of the first blade 520 is between 0.3 mm and 3 mm, such as 0.3 mm, 0.8 mm, 1 mm, 1.2 mm, 1.7 mm, 2.3 mm, 2.7 mm, 3 mm, etc. Since the friction force generated by the ground contact is greater closer to the first edge 524, the thickness of the first edge 524 is greater than the thickness of the remaining region, which can increase the structural strength of the first edge 524, make the first edge 524 more wear-resistant, and further prolong the life of the first blade 520.

In some embodiments, referring to fig. 11, the first blade 520 and the second blade 530 each extend helically along the axial direction of the body 510. Therefore, the first blade 520 and the second blade 530 are overlapped in the axial direction of the body 510, and when the cleaning brush 500 rotates, a part of the first projection 540 and a part of the second projection 550 contact the ground, which can reduce noise and increase sweeping effect.

The foregoing embodiments have been described in detail, and specific examples are used herein to explain the principles and implementations of the present application, which may be used to help understand the methods and their core ideas of the present application.

Claims (10)

1. A cleaning brush, comprising: a body, a plurality of first blades and a plurality of second blades;

the first blades and the second blades are fixed on the outer peripheral surface of the body and are alternately distributed at intervals along the circumferential direction of the body, and the first blades and the second blades extend along the axial direction of the body;

the outer surface of the first blade is provided with a plurality of first bulges, the outer surface of the second blade is provided with a plurality of second bulges, and the first bulges and the second bulges are alternately distributed at intervals along the axial direction of the body.

2. The cleaning brush of claim 1, wherein the height of the first protrusion relative to the outer surface of the first blade is between 0.5 mm and 1.5 mm, and/or the height of the second protrusion relative to the outer surface of the second blade is between 0.5 mm and 1.5 mm.

3. The cleaning brush of any one of claims 1 or 2 wherein the first blade has a first edge distal from the body, a distance between a center of the first protrusion and the first edge being between 0.5 millimeters and 2.5 millimeters.

4. The cleaning brush of claim 3 wherein the thickness of the first edge is greater than the thickness of the remaining area of the first blade.

5. The cleaning brush of claim 4 wherein the difference between the thickness of the first edge and the thickness of the remaining area of the first blade is between 0.3 mm and 3 mm.

6. The cleaning brush of any one of claims 1 or 2 wherein the second blade has a second edge distal from the body, the distance between the center of the second protrusion and the second edge being between 0.5 millimeters and 2.5 millimeters.

7. The cleaning brush according to any one of claims 1 or 2, wherein the first blade and the second blade are each inclined with respect to a radial direction of the body, a height dimension of the first blade in an inclined direction is H1, a height dimension of the second blade in the inclined direction is H2, the H1 is greater than the H2, and a difference between H1 and H2 is between 2mm and 5 mm.

8. The cleaning brush according to any one of claims 1 or 2, wherein at least part of the plurality of first protrusions is located in a middle region of the first blade in an axial direction of the body; at least part of the second protrusions is located in a middle region of the second blade in the axial direction of the body.

9. The cleaning brush of any one of claims 1 or 2 wherein the first blade has a first edge distal from the body and the second blade has a second edge distal from the body; the distance between the first edge and the outer peripheral surface of the body is larger than the distance between the second edge and the outer peripheral surface of the body.

10. A cleaning robot comprising a main body and the cleaning brush of any one of claims 1 to 9, the cleaning brush being rotatably connected to the main body.

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