Floor brush and cleaning device

Abstract

The utility model relates to a floor brush and cleaning equipment, floor brush includes floor brush main part, at least one roll brush group and connecting structure, floor brush main part is equipped with the suction cavity with opening, same roll brush group includes at least two roll brushes, the roll brush can rotate around the central axis, the adjacent two roll brushes of same roll brush group are connected through connecting structure, make the included angle angle between the two roll brushes of being connected variable in the nonparallel horizontal plane preset plane. The adjacent two roll brushes of same roll brush group are connected through connecting structure, make the included angle angle of the two roll brushes each other variable, can improve the cleaning effect of floor brush on the non-flat surface.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology, and in particular to a floor brush and cleaning equipment. Background Technology

[0002] Floor scrubbers, vacuum cleaners, and other cleaning equipment have become indispensable tools in modern households. Taking vacuum cleaners as an example, they use vacuum suction to pick up debris from surfaces. While current vacuum cleaners perform well on flat surfaces, they are less effective on uneven surfaces such as door sills, carpet edges, and transition areas between hard floors. Sometimes, users adjust the overall tilt angle of the floor brush multiple times to adapt to uneven surfaces. While this can improve cleaning performance, the effect is not significant and makes the cleaning process tedious and time-consuming. Utility Model Content

[0003] To address the aforementioned technical problems, this disclosure provides a floor brush and cleaning device.

[0004] Solution for solving the problem

[0005] A first aspect of this application provides a floor brush, the floor brush comprising:

[0006] The main body of the floor brush is equipped with a suction chamber with an opening;

[0007] At least one set of roller brushes, the same set comprising at least two roller brushes, the roller brushes being rotatable about their central axis; and

[0008] The connection structure connects two adjacent rollers in the same roller brush group, such that the included angle between the two connected roller brushes is variable in a preset plane that is not parallel to the horizontal plane.

[0009] Optionally, the number of the preset planes is at least one.

[0010] Optionally, the angle between the preset plane and the horizontal plane is 90°.

[0011] Optionally, the connection structure includes at least one of a hinge, a flexible material connector, a universal joint, or a ball joint.

[0012] Optionally, the connection structure includes a first part and a second part;

[0013] One end of the first part and one end of the second part are respectively connected to two adjacent rollers in the same roller brush group; the other end of the first part is formed with a ball head, and the other end of the second part is formed with a receiving groove, the ball head being located in the receiving groove; under the action of external force, the ball head can rotate in the receiving groove.

[0014] Optionally, the connecting structure further includes a ball located between the ball head and the inner wall of the receiving groove;

[0015] At least one of the inner walls of the ball head and the receiving groove is provided with a groove, and the ball is at least partially located in the groove.

[0016] Optionally, at least one of the roller brush groups includes a first roller brush group, wherein the central axes of all roller brushes in the first roller brush group are parallel to the horizontal plane and perpendicular to the direction of travel of the floor brush.

[0017] Optionally, at least one of the roller brush groups includes a second roller brush group, wherein two adjacent roller brushes in the second roller brush group are coaxial, and when two adjacent roller brushes in the first roller brush group are coaxial, the central axis of the roller brushes in the second roller brush group is set at an angle to the central axis of the roller brushes in the first roller brush group.

[0018] Optionally, the number of the first roller brush groups is at least two, the at least two first roller brush groups are distributed at intervals along the travel direction, and the gap positions between the two adjacent roller brushes corresponding to the two adjacent first roller brush groups are aligned, or the gap positions between the two adjacent roller brushes corresponding to the two first roller brush groups are not aligned.

[0019] Optionally, the roller brush is cylindrical, or at least the end of the roller brush connected to the connecting structure is at least a conical portion.

[0020] Optionally, the floor brush further includes:

[0021] A first driving structure is configured to provide a driving force to the first part or the second part, causing relative motion between the first part and the second part; and / or,

[0022] The second drive structure provides a driving force for the rotation of the roller brush about its central axis.

[0023] A second aspect of this application provides a cleaning device, which includes a body, a main unit, and a floor brush as described in any of the first aspects of the embodiment, wherein the body is connected to the body and the floor brush respectively;

[0024] The main unit includes a suction structure and a separation structure. The main body is provided with a channel connecting the suction chamber and the separation structure. The suction structure provides suction force for the airflow carrying waste to enter the separation structure through the suction chamber and the channel.

[0025] Effects of the utility model

[0026] Non-flat surfaces refer to surfaces with uneven features, which bulge or recess from the horizontal plane. These uneven areas easily accumulate debris, making them difficult for existing floor brushes to clean and creating unsanitary corners. In this embodiment, adjacent roller brushes in the same roller brush group are connected by a connecting structure. The angle between these two roller brushes is variable, and the variable direction lies within a preset plane that is not parallel to the horizontal plane. This allows multiple roller brushes to form angles that best match the uneven features, increasing the contact area between the roller brushes and the non-flat surface. The roller brushes can better agitate debris in the uneven areas, improving the cleaning effect of the floor brush on non-flat surfaces. Furthermore, the increased contact between the roller brushes and the uneven surface also reduces the decrease in vacuum level of the floor brush, ensuring vacuum suction and thus improving the cleaning effect. Attached Figure Description

[0027] Figure 1 The present invention provides schematic diagrams of the vacuum cleaner's structure in some embodiments.

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the floor brush in some embodiments of this application;

[0029] Figure 3 This is a simplified diagram showing the contact state between the roller brush and the uneven surface when the roller brush is cleaning the uneven surface in some embodiments of this application.

[0030] Figure 4 This is one of the bottom-view schematic diagrams of the floor brush in some embodiments of this application;

[0031] Figure 5 This is a simplified diagram showing the contact state between the roller brush and the uneven surface when the ground brush is cleaning another uneven surface in some embodiments of this application.

[0032] Figure 6 This is a second bottom view of the floor brush in some embodiments of this application;

[0033] Figure 7 This is a front view schematic diagram of a roller brush in some embodiments of the present application;

[0034] Figure 8 This is the third bottom view of a floor brush in some embodiments of this application;

[0035] Figure 9 This is a schematic diagram of the ball joint structure in some of the brush structures in this application;

[0036] Figure 10 This is a schematic diagram of the universal joint structure in some of the brush structures in this application.

[0037] Explanation of reference numerals in the attached figures

[0038] 10. Protrusion; 20. Boss; 100. Floor brush; 110. Floor brush body; 111. Suction chamber; 112. Front edge; 113. Rear edge; 114. Left edge; 115. Right edge; 120. Roller brush assembly; 120S. First roller brush assembly; 120G. Second roller brush assembly; 121-a, 121-b, 121-c, 121-d, 121-e, 121-f, 121-g. Roller brushes; 122-a, 122- b, 122-c, 122-d, 122-e, 122-f, gap; 130, connecting structure; 131-a, 131-b, first part; 1311-a, 1311-b, ball head; 1312, groove; 132-a, 132-b, second part; 133, ball; 1321-a, 1321-b, receiving groove; 200, body; 300, main unit; 310, separation structure; 320, suction structure. Detailed Implementation

[0039] To make the technical solution and beneficial effects of this utility model more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0040] In the description of this utility model, the terms "center", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. In other words, they should not be construed as limitations on this utility model.

[0041] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly include at least one of those features. In the description of this invention, "a plurality of" means at least two, such as two, three, etc.

[0042] In this utility model, unless otherwise explicitly defined, the terms "connection," "setup," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Generally, cleaning equipment includes a floor brush 100, a body 200, and a main unit 300. The floor brush 100 can move back and forth on the surface to be cleaned (this can be understood as the direction of travel of the floor brush 100, see [reference]). Figure 1 As shown, the body 200 connects the floor brush 100 and the main unit 300, and forms a channel through which airflow carrying waste is drawn into the separation structure 310 via a suction chamber 111 with an opening on the floor brush 100. The waste includes dust, dander, paper scraps, hair, rice grains, fruit peels, etc.

[0044] The surfaces to be cleaned include, but are not limited to, floors, walls, tabletops, and carpet surfaces. The cleaning equipment used in this application includes, but is not limited to, vacuum cleaners, floor scrubbers, and mite removers. Unless otherwise specified, for ease of description, the surface to be cleaned is described using a floor as an example, and the cleaning equipment is described using a vacuum cleaner as an example.

[0045] Figure 1 A schematic diagram of a vacuum cleaner structure is shown as an example. The body 200 can be rod-shaped or tubular. The main unit 300 includes a suction structure 320 and a separation structure 310. The body 200 has a channel connecting the suction chamber 111 and the separation structure 310. The suction structure 320 provides suction force for the airflow carrying debris to enter the separation structure 310 through the suction chamber 111 and the channel. The separation structure 310 is used to separate debris from the airflow. The separated debris can be temporarily stored in the separation structure 310, while the airflow can be discharged through the exhaust port on the suction structure 320. The suction structure 320 includes a suction motor and an impeller. The suction motor drives the impeller to rotate to form a suction flow.

[0046] Figure 2 , Figure 4 , Figure 6 and Figure 8 Different types of floor brushes 100 are shown as examples.

[0047] See Figure 2The floor brush 100 includes a floor brush body 110, a roller brush assembly 120, and a connecting structure 130. The floor brush body 110 is provided with a suction chamber 111 having an opening. The same roller brush assembly 120 includes at least two roller brushes 121-a and 121-b, which are rotatable around their central axes Oa and Ob, respectively (see...). Figure 2 The rollers rotate; adjacent rollers 121-a and 121-b of the same roller brush group 120 are connected by a connecting structure 130, such that the included angle between the two connected rollers 121-a and 121-b (e.g., the included angle between the central axes Oa and Ob of rollers 121-a and 121-b) is variable in a preset plane, wherein the preset plane is not parallel to the horizontal plane. Oa and Ob can be as follows: Figure 2 The lines shown are collinear, but they can also be non-collinear and form a certain angle, which can be variable. For example... Figure 3 As shown, after two adjacent rollers 121-a and 121-b of the same roller brush group 120 rotate relative to each other, the central axes Oa and Ob of the two rollers 121-a and 121-b form an angle greater than 0° between them.

[0048] The number of connection structures 130 is at least one. Figure 2 The exemplary floor brush 100 includes two brush groups 120 and two connecting structures 130. Each brush group 120 includes two brushes 121-a and 121-b. Adjacent brushes 121-a and 121-b of the two brush groups 120 are connected by a connecting structure 130. Figure 4 The exemplary floor brush 100 includes a roller brush assembly 120 and two connecting structures 130. The roller brush assembly 120 includes three roller brushes 121-a, 121-b, and 121-c. Adjacent roller brushes 121-a and 121-b are connected to each other, and roller brushes 121-b and 121-c are connected to each other through a connecting structure 130.

[0049] In other implementations, a floor brush 100 may also include three or more roller brush groups 120. The same roller brush group 120 may also include four or more roller brushes. The number and placement of roller brush groups 120 are not limited to the examples illustrated in this application.

[0050] Non-flat surfaces refer to surfaces with uneven features, which bulge or recess from the horizontal plane. These uneven areas easily accumulate debris, making them difficult for existing floor brushes to clean and creating unsanitary corners. In this embodiment, since adjacent roller brushes of the same roller brush group 120 are connected by a connecting structure 130, the angle between these two roller brushes is variable, and the variable direction is not parallel to the horizontal plane. This allows multiple roller brushes to form angles that best match the uneven features, increasing the contact area between the roller brushes and the non-flat surface. The roller brushes can better agitate debris in the uneven areas, improving the cleaning effect of the floor brush 100 on non-flat surfaces. Furthermore, the increased contact between the roller brushes and the uneven surface also reduces the decrease in vacuum level of the floor brush 100, ensuring vacuum suction and thus improving the cleaning effect.

[0051] Typically, uneven surfaces are created when there are raised strips (such as edge strips), thresholds, or height differences between two rooms. Alternatively, uneven surfaces can also be created when carpet is laid in a room, as the transition area between the carpet edge and the hard floor can also form an uneven surface.

[0052] For simpler non-flat surfaces, such as Figure 3 As shown, Figure 3 The upward protrusion 10 has inclined surfaces A and B on both sides. If the user uses... Figure 2 The cleaning device shown is applicable to both existing floor brushes and the floor brush 100 of this embodiment, if the operating direction is as indicated by arrow a (arrow a can be understood as the direction in which the user pushes the floor brush 100).

[0053] If the user uses an existing floor brush and the operating direction is perpendicular to the paper surface, when operating near the protrusion 10, the angle between the floor brush 100 and the ground needs to be changed. For example, during the cleaning process from cleaning slope A to cleaning slope B, the user needs to first tilt the floor brush to the left, so that the roller brush fits against the left side of slope A and pushes the floor brush in a direction perpendicular to the paper surface, and then tilt the floor brush to the right, fits against slope B, and pushes the floor brush in a direction perpendicular to the paper surface. This operation is cumbersome. Moreover, even if the tilt angle of the floor brush is adjusted, the vacuum between the floor brush and the ground will decrease due to the sudden change in the flatness of the ground when passing over the protrusion 10, and the cleaning effect still cannot be guaranteed.

[0054] If the user uses this application Figure 2The floor brush 100 shown moves in a direction perpendicular to the paper surface. When adjacent roller brushes 121-a and 121-b of the roller brush group 120 are connected by a variable-angle connecting structure 130, the protrusion 10 will also generate a reaction force on the floor brush 10 due to gravity or pressure applied by the user. Under the action of the reaction force and the connecting structure 130, the included angle between adjacent roller brushes 121-a and 121-b of the same roller brush group 120 is in a vertical plane perpendicular to the horizontal plane (see...). Figure 3 The plane shown in the dashed box (b) is one of the preset planes. The changes occur until the two adjacent roller brushes 121-a and 121-b are in contact with the two surfaces A and B respectively. In this way, the non-flat surface can be cleaned without adjusting the tilt angle of the floor brush 100 multiple times, thus improving the cleaning effect.

[0055] If the uneven surface further changes into a more complex Figure 5 As shown, Figure 5 This type of non-flat surface often appears in scenarios where there are raised strips (such as edge strips) or thresholds between two rooms. Therefore, use... Figure 4 When the floor brush 100 is cleaning in a direction perpendicular to the paper surface, the floor brush 100 is adjusted so that the middle roller brush 121-b of the same roller brush group 120 is attached to the surface of the boss 20, and the two roller brushes 121-a and 121-c at both ends are attached to the two side planes of the boss 20 respectively. This can also achieve efficient cleaning of non-flat surfaces.

[0056] After cleaning an uneven surface, once the floor brush 100 returns to a flat surface, the end of the roller brush that was "raised" due to the angle change can return to its initial state under gravity. Alternatively, the interaction force between the other end of the roller brush that was not "raised" and the ground can help the roller brush assembly 120 passively return to its initial state, allowing the roller brush to continue cleaning flat surfaces. Here, "initial state" can refer to the fact that the central axes of the different roller brushes 121 in the same roller brush assembly 120 are approximately on the same straight line.

[0057] When cleaning more complex, non-flat surfaces, the number and arrangement of the roller brushes can be further improved. For example: using... Figure 6 and Figure 8 (As will be specifically mentioned below) etc., the floor brush 100 with three or more sets of roller brushes 120 is used for cleaning.

[0058] In some alternative embodiments, the number of preset planes is at least one. For example, the included angle between two adjacent rollers 121-a and 121-c connected by the connecting structure 130 can vary within at least two, three or more preset planes.

[0059] For example, the angle between the preset plane and the horizontal plane is 1°-179°. For instance, the preset plane can be a vertical surface at 90° to the horizontal plane, or it can be an inclined surface at 30° or 20° to the horizontal plane.

[0060] In some alternative embodiments, the connection structure 130 includes at least one of a hinge, a flexible material connector, a universal joint, or a ball joint.

[0061] Flexible materials can be rubber materials or metal chain structures.

[0062] In some alternative embodiments, see Figure 9 and Figure 10 As shown, the connection structure 130 includes a first part 131-a, 131-b and a second part 132-a, 1311-b; one end of the first part 131-a, 131-b and one end of the second part 132-a, 1311-b are respectively connected to two adjacent rollers 121-a, 121-b of the same roller brush group 120; the other end of the first part 131-a, 131-b and the other end of the second part 132-a, 1311-b are rotatably connected to each other.

[0063] See also Figure 9 and Figure 10 The other ends of the first parts 131-a and 131-b are formed with ball heads 1311-a and 1311-b, and the other ends of the second parts 132-a and 132-b are formed with receiving grooves 1321-a and 1311-b. The ball head 1311-a (or ball head 1311-b) is at least partially located in the receiving groove 1321-a (or receiving groove 1321-b). Under the action of external force, the ball head 1311-a (or ball head 1311-b) can rotate in the receiving groove 1321-a (or receiving groove 1311-b).

[0064] The mating structure of the ball heads 1311-a and 1311-b and the receiving grooves 1321-a and 1311-b is simple and the angle can be flexibly changed.

[0065] The first part 131-a, 131-b and the second part 132-a, 132-b are rotatably connected by the structure of the ball heads 1311-a, 1311-b and the receiving grooves 1321-a, 1321-b. This structure allows the two connected rollers 121-a, 121-b to rotate around their own central axis, and also allows a certain angular deviation between the rotation axes of the two adjacent rollers 121-a, 121-b (i.e., the included angle between the corresponding central axes Oa, Ob of the two rollers 121-a, 121-b is variable). The connection structure 130 to the roller brushes 121-a and 121-b is simpler. For example, one end of the first part 131-a and 131-b and one end of the second part 132-a and 132-b can be directly connected to the roller brushes 121-a and 121-b respectively, without the need for a more complex transmission structure to connect the connection structure 130 to the roller brushes 121a and / or 121-b in order to ensure that the roller brushes 121a and / or 121-b can rotate. This type of connection structure 130 includes, but is not limited to, ball joints or universal joints.

[0066] For example, it is possible to Figure 9 A retaining member is provided at the connection between the first part 131-a and the second part 132-a, which ensures that the ball head 1311-a and the receiving groove 1321-a remain connected at all times. Alternatively, the opening of the receiving groove 1321-a is formed as a constricted opening, the inner diameter of which is smaller than the outer diameter of the ball head 1311-a. After the ball head 1311-a is inserted into the receiving groove 1321-a, the ball head 1311-a and the receiving groove 1321-a can also remain connected at all times due to the limiting effect of the constricted opening.

[0067] Apart from Figure 9 In addition to the ball joint shown, other joints can also be used. Figure 10 The ball-cage universal joint shown.

[0068] See Figure 10 The connecting structure 130 also includes a ball 133 located between the inner walls of the ball head 1311-b and the receiving groove 1321-b; the number of balls 133 is at least two, and at least one of the inner walls of the ball head 1311-b and the receiving groove 1321-b is provided with a groove 1312, and the ball 133 is at least partially located within the groove 1312. Figure 10In the illustrated implementation, both the inner walls of the ball head 1311-b and the receiving groove 1321-b are provided with grooves 1312. The balls 133 are clamped within the respective grooves 1312 on the inner walls of the ball head 1311-b and the receiving groove 1321-b. The number of grooves 1312 on the inner walls of the ball head 1311-b and the receiving groove 1321-b is generally the same as the number of balls 133. When the first part 131-b and the second part 132-b rotate relative to each other, the balls 133 move within the grooves 1312 to accommodate the rotation between the first part 131-b and the second part 132-b, forming a contact point between the inner walls of the ball head 1311-b and the receiving groove 1321-b.

[0069] exist Figure 9 In the process, when the ball head 1311-a rotates within the receiving groove 1321-a, the ball head 1311-a contacts the inner wall surface of the receiving groove 1321-a through its spherical surface, and Figure 10 In the implementation shown, the ball head 1311-b and the inner wall of the receiving groove 1321-b achieve almost "point contact" through the ball 133, resulting in less resistance and thus... Figure 10 The first part 131-b and the second part 132-b rotate relative to each other to adjust the angle between their axes, which is a more flexible way to achieve this.

[0070] for Figure 10 In the ball cage universal joint shown, a ball retainer can be provided between the ball head 1311-b and the inner wall of the receiving groove 1321-b. The ball retainer has a through hole corresponding to the ball 133, allowing the ball 133 to partially pass through the through hole and abut against the inner wall of the receiving groove 1321-b. This prevents the ball 133 from disengaging from the groove 1312 during the relative rotation of the first part 131-b and the second part 132-b, ensuring the reliability of the connection between the first part 131-b and the second part 132-b. The driving force for the relative rotation between the first part 131-1, 132-b and the second part 132-a, 131-b can come from the gravity of the brush or the reaction force of an external force. Besides this passive driving method, an active driving method can also be used.

[0071] For example, the floor brush 100 also includes a first drive structure, which may include a first drive motor and a first transmission component. One end of the first transmission component is connected to the output shaft of the first drive motor, and the other end of the first transmission component is connected to at least one of the first part 131 and the second part 132. The driving force output by the first drive motor actively drives the first part 131 and the second part 132 to rotate relative to each other through the first transmission component, so that the included angle between the first part 131 and the second part 132 changes, thereby driving the corresponding roller brush 121 to move, realizing the change of the included angle between two adjacent roller brushes 121.

[0072] The first transmission component can be a belt drive component, a gear drive component, or a lead screw drive component, but is not limited to these.

[0073] In some alternative embodiments, see Figure 6 At least one roller brush group 120 includes a first roller brush group 120S, wherein the central axes of all roller brushes in the first roller brush group 120S are parallel to the horizontal plane and perpendicular to the travel direction of the floor brush 100. That is, in the floor brush 100, at least one roller brush group 120 is arranged parallel to the front edge 112 or the rear edge 113 of the floor brush 100. Figure 2 In the implementation shown, the floor brush 100 includes two first roller brush groups 120S, which are spaced apart. One of them is close to the front edge 112 of the floor brush, and the other is close to the rear edge 113 of the floor brush. In the initial state, the central axis of the roller brush of the first roller brush group 120S is parallel to the front edge 112 or the rear edge 113 of the floor brush.

[0074] Figure 4 In the implementation shown, a first roller brush group 120S of the floor brush is located at the front edge 112.

[0075] During the cleaning process, the user pushes and pulls the vacuum cleaner along the direction of travel. At least one first roller brush group 120S is set in the direction of travel perpendicular to the floor brush, so that the rotation of the roller brush 121 is consistent with the direction of travel, making the cleaning operation convenient and labor-saving.

[0076] In some alternative embodiments, see Figure 6 At least one roller brush group 120 further includes a second roller brush group 120G. In the second roller brush group 120G, two adjacent roller brushes 121-d and 121-e are coaxial, and when two adjacent roller brushes 121-a and 121-b in the first roller brush group 120S are coaxial, the central axes Od and Oe of the roller brushes 121-d and 121-e in the second roller brush group 120G are set at an angle to the central axes Oa and Ob of the roller brushes 121-a and 121-b in the first roller brush group 120S. This angle can be... Figure 6 The 90° shown is in Figure 6 In the implementation shown, in the initial state, the central axes Od and Oe of the two adjacent roller brushes 121-d and 121-e of the second roller brush group 120G are parallel to the left edge 114 or the right edge 115 of the floor brush. By setting the second roller brush group 120G, the floor brush's ability to clean more complex and uneven surfaces can be increased.

[0077] Specifically, Figure 6In this design, two sets of first roller brushes 120S are positioned between the front and rear edges of the floor brush, and two sets of second roller brushes 120G are positioned between the left and right edges of the floor brush. Each roller brush set 120 includes two roller brushes. Taking the spatial coordinate system XYZ as an example, if the XY plane is horizontal, the included angle between two adjacent roller brushes 121a and 121-b in the first roller brush set 120S is variable at least in the YZ plane, and the included angle between two adjacent roller brushes 121-d and 121-e in the second roller brush set 120G is variable at least in the XZ plane. Both the XZ plane and the YZ plane are perpendicular to the horizontal XY plane. In this way, the roller brushes at different positions can conform to more surfaces of the non-flat surface in three-dimensional space, which is beneficial to increasing the floor brush's ability to clean more complex non-flat surfaces.

[0078] In the initial state, the angle between the central axes Od and Oe of two adjacent rollers 121-d and 121-e in the second roller brush group 120G and the central axes Oa and Ob of two adjacent rollers 121-a and 121-b in the first roller brush group 120S can be 60°, 30° or 10°, but is not limited to these.

[0079] In some optional embodiments, the number of first roller brush groups 120S is at least two, and the at least two first roller brush groups 120S are spaced apart along the direction of travel, and the gaps 122-a and 122-b between adjacent two roller brushes 121 corresponding to adjacent two first roller brush groups 120S are aligned (see Figure 6 ), or, see Figure 8 At least two adjacent rollers 121 corresponding to the first roller brush groups 120S have misaligned gaps 122-c and 122-d.

[0080] Figure 2 and Figure 6 The implementations shown all include two first roller brush groups 120S. Figure 6 For example, the gap 122-a between two adjacent roller brushes 121-a and 121-b in one first roller brush group 120S is aligned with the gap 122-b between two corresponding adjacent roller brushes 121-a and 121-b in another first roller brush group 120S. Generally, by adjusting the distance between the ends of the two roller brushes 121-a and 121-b connected to the same connecting structure 130, the gaps 122-a and 122-b between the two roller brushes 121-a and 121-b can be minimized as much as possible, thereby reducing or even avoiding missed cleaning problems caused by the gaps 122-a and 122-b between the two roller brushes 121-a and 121-b during the cleaning process (especially when cleaning flat surfaces).

[0081] Figure 8In the implementation shown, the floor brush includes three first roller brush groups 120S, which are spaced apart along the direction of travel. The gap 122-d between two adjacent roller brushes 121-a and 121-b in the middle first roller brush group 120S is offset from the gaps 122-c and 122-e between adjacent roller brushes 121-a and 121-b in the other two first roller brush groups 120S. During the user's operation of the floor brush moving back and forth, even if there are missed cleaning marks on the ground due to the gap 122-c on the front side, they will be cleaned by the roller brush 121-a on the rear side. This not only ensures the cleaning effect, but also reduces the size requirements of the gaps 122-a, 122-b, 122-c, 122-d, and 122-e between two adjacent roller brushes 121-a and 121-b in the same roller brush group 120. Larger gaps 122-a, 122-b, 122-c, 122-d, and 122-e are also allowed, reducing the difficulty of manufacturing or assembly.

[0082] In some alternative embodiments, see Figure 2 , Figure 4 and Figure 6 As shown, the roller brush is cylindrical, or, see [link to other documentation] Figure 7 As shown, at least a portion of the end of the roller brush connected to the connecting structure 130 is tapered.

[0083] See Figure 7 The gap 122-f between two adjacent rollers 121-f and 121-g in the same roller brush group 120 can also be reduced by using roller brushes with tapered ends. See also Figure 7 Relatively speaking, the outer diameter of the first end of the roller brush is smaller than the outer diameter of the second end of the roller brush, and the second end of the roller brush can protrude slightly downward in the initial state (see...). Figure 7 The roller brush (marked by the dashed line) contacts the ground, and the reaction force exerted by the ground P on the roller brush (see...) Figure 7 Under the action of the middle arrow pointing to the connecting structure 130, the two roller brushes 121-f and 121-g tilt downwards, thus reducing the gap 122-f between the two roller brushes 121-f and 121-g.

[0084] It should be understood that a roller brush can be any geometric shape capable of having a uniform shape about a central axis. For example, the shape of a roller brush includes, but is not limited to, cylinders, cones, truncated cones, etc.

[0085] In some alternative embodiments, the brush also includes a second drive structure for providing a driving force for the rotation of the brush about its central axis.

[0086] The second drive structure may include a second drive motor and a second transmission component. The second transmission component is connected to a second drive motor and at least one roller brush in the roller brush group 120 to transmit the driving force generated by the second drive motor to at least one roller brush, thereby driving at least one roller brush to rotate.

[0087] The second transmission component includes, but is not limited to, a belt drive component or a gear drive component. The roller brush can be connected to the brush body via the second transmission component, or it can be directly connected to the brush body.

[0088] The rotation of all the rollers in the floor brush can be driven by the same second drive motor or by multiple different second drive motors.

[0089] Without conflict, different embodiments or different technical features of this disclosure can be arbitrarily combined to form new embodiments.

[0090] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this utility model that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this utility model and do not limit the scope of protection of this utility model patent.

Claims

1. A floor brush, characterized in that, The floor brush (100) includes: The floor brush body (110) is provided with a suction chamber (111) with an opening; At least one set of roller brushes (120), the same set of roller brushes (120) comprising at least two roller brushes (121-a, 121-b), the roller brushes (121-a, 121-b) being rotatable about their central axis; and The connecting structure (130) connects two adjacent roller brushes (121-a, 121-b) of the same roller brush group (120), so that the included angle between the two connected roller brushes (121-a, 121-b) is variable in a preset plane that is not parallel to the horizontal plane.

2. The floor brush according to claim 1, characterized in that, The number of the preset planes is at least one.

3. The floor brush according to claim 1, characterized in that, The angle between the preset plane and the horizontal plane is 90°.

4. The floor brush according to claim 1, characterized in that, The connection structure (130) includes at least one of a hinge, a flexible material connector, a universal joint, or a ball joint.

5. The floor brush according to claim 1 or 4, characterized in that, The connection structure (130) includes a first part (131-a, 131-b) and a second part (132-a, 132-b); One end of the first portion (131-a, 131-b) and one end of the second portion (132-a, 132-b) are respectively connected to two adjacent roller brushes (121-a, 121-b) of the same roller brush group (120); the other end of the first portion (131-a, 131-b) is formed with a ball head (1311-a, 1311-b), and the other end of the second portion (132-a, 132-b) is formed with a receiving groove (1321-a, 1321-b). The ball heads (1311-a, 1311-b) are at least partially located within the receiving grooves (1321-a, 1321-b); under the action of external force, the ball heads (1311-a, 1311-b) are able to rotate within the receiving grooves (1321-a, 1321-b).

6. The floor brush according to claim 5, characterized in that, The connecting structure (130) also includes a ball (133) located between the inner walls of the ball head (1311-a, 1311-b) and the receiving groove (1321-a, 1321-b); At least one of the inner walls of the ball head (1311-a, 1311-b) and the receiving groove (1321-a, 1321-b) is provided with a groove (1312), and the ball (133) is at least partially located in the groove (1312).

7. The floor brush according to claim 1, characterized in that, At least one of the roller brush groups (120) includes a first roller brush group (120S), wherein the central axes of all roller brushes (121-a, 121-b, 121-c) of the first roller brush group (120S) are parallel to the horizontal plane and perpendicular to the travel direction of the floor brush (100).

8. The floor brush according to claim 7, characterized in that, At least one of the roller brush groups (120) includes a second roller brush group (120G), wherein two adjacent roller brushes (121-d, 121-e) in the second roller brush group (120G) are coaxial, and when two adjacent roller brushes (121-a, 121-b) in the first roller brush group (120S) are coaxial, the central axis of the roller brushes (121-d, 121-e) in the second roller brush group (120G) is set at an angle to the central axis of the roller brushes (121-a, 121-b) in the first roller brush group (120S).

9. The floor brush according to claim 7, characterized in that, The number of the first roller brush group (120S) is at least two, and the at least two first roller brush groups (120S) are distributed at intervals along the travel direction. The gaps (122-a, 122-b) between the adjacent two roller brushes (121-a, 121-b) corresponding to the adjacent two first roller brush groups (120S) are aligned, or the gaps (122-c, 122-d) between the adjacent two roller brushes (121-a, 121-b) corresponding to the at least two first roller brush groups (120S) are not aligned.

10. The floor brush according to claim 1, characterized in that, The roller brushes (121-a, 121-b, 121-c, 121-d, 121-e) are cylindrical, or at least the ends of the roller brushes (121-f, 121-g) connected to the connecting structure (130) are at least a portion of a tapered shape.

11. The floor brush according to claim 5, characterized in that, The floor brush (100) also includes: A first driving structure is configured to provide a driving force to the first part (131-a, 131-b) or the second part (132-a, 132-b), causing relative movement between the first part (131-a, 131-b) and the second part (132-a, 132-b); and / or, The second drive structure provides a driving force for the rotation of the roller brushes (121-a, 121-b, 121-c, 121-d, 121-e, 121-f, 121-g) about their central axis.

12. A cleaning device, characterized in that, The cleaning equipment includes a body (200), a main unit (300), and a floor brush (100) as described in any one of claims 1 to 11, wherein the body (200) is connected to the body (200) and the floor brush (100); The main unit (300) includes a suction structure (320) and a separation structure (310). The body (200) is provided with a channel connecting the suction chamber (111) and the separation structure (310). The suction structure (320) provides suction force for the airflow carrying garbage to enter the separation structure (310) through the suction chamber (111) and the channel.

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