Floor brush assembly for cleaning device and cleaning device having the same

Abstract

The present invention discloses a floor brush assembly for a cleaning device and a cleaning device having the same. The floor brush assembly includes: a housing, a rolling brush, a driving assembly, and a tensioning assembly. The driving assembly includes a motor, a first driving wheel, and a first transmission belt. The motor directly or indirectly drives the first driving wheel to rotate. The first transmission belt is wound around the rolling brush and the first driving wheel, and drives the rolling brush to rotate through the first driving wheel when tensioned. The tensioning assembly includes a tensioning wheel, a lever mechanism, and a control device. The tensioning wheel is disposed on the lever mechanism and moves with the lever mechanism. The control device controls the lever mechanism to move between a first state and a second state. When the lever mechanism moves to the first state, the tensioning wheel tensions the first transmission belt. When the lever mechanism moves to the second state, the tensioning wheel relaxes the first transmission belt. According to the floor brush assembly for a cleaning device of the present invention, the structure is simple and the cost is low, and the rotation and stop of the rolling brush can be simply and effectively realized.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a floor brush assembly for a cleaning equipment and a cleaning equipment having the same. Background Art

[0002] In some vacuum cleaners in the related art, the motor drives the roller brush to rotate through a belt. During the cleaning process, in order to enable the roller brush to rotate or not rotate according to the user's needs, a special clutch for the roller brush needs to be provided. However, the structure of the special clutch for the roller brush in the related art is complex and the cost is relatively high. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, the present invention provides a floor brush assembly for a cleaning equipment, and the floor brush assembly has a simple structure and low cost, and can simply and effectively realize the rotation and stop of the roller brush.

[0004] The present invention also provides a cleaning equipment having the above floor brush assembly.

[0005] According to the floor brush assembly for a cleaning equipment of the first aspect of the present invention, it includes: a housing; a roller brush, the roller brush being rotatably provided in the housing; a driving assembly, the driving assembly including a motor, a first driving wheel and a first transmission belt, the motor directly or indirectly driving the first driving wheel to rotate, the first transmission belt being wound around the roller brush and the first driving wheel, and driving the roller brush to rotate through the first driving wheel when being tensioned; and a tensioning assembly, the tensioning assembly including a tensioning wheel, a lever mechanism and a control device, the tensioning wheel being provided on the lever mechanism and making a lever movement along with the lever mechanism, the control device controlling the lever mechanism to make a lever movement between a first state and a second state, when the lever mechanism moves to the first state, the tensioning wheel tensions the first transmission belt, and when the lever mechanism moves to the second state, the tensioning wheel relaxes the first transmission belt.

[0006] According to the floor brush assembly for a cleaning equipment of the present invention, it has a simple structure and low cost, and can simply and effectively realize the rotation and stop of the roller brush.

[0007] In some embodiments, the floor brush assembly further includes: a lifting device, the lifting device being adapted to support the ground, the lifting device being respectively cooperated with the housing and the control device, the control device being configured to: during the process of the control device controlling the lever mechanism to move from the second state to the first state, link the housing to drive the roller brush to be lifted relative to the lifting device.

[0008] In some embodiments, the lever mechanism includes: a lever body, a first lever and a second lever. The lever body rotates around a fulcrum. One end of the first lever is connected to the lever body, and a tension pulley is installed at the other end. One end of the second lever is connected to the lever body, and the other end is cooperated with the control device.

[0009] In some embodiments, the lever body includes a first arm and a second arm located on both sides of the fulcrum. The first lever and the second lever are both connected to the first arm.

[0010] In some embodiments, the first lever is located on a side of the second lever away from the fulcrum.

[0011] In some embodiments, the first lever and the second lever are distributed on two lateral sides of the first arm.

[0012] In some embodiments, the lever mechanism includes: a lever body and a second lever. The lever body rotates around a fulcrum. The control device includes a rotating cylinder. The circumferential wall surface of the rotating cylinder has a first slide rail, and the first slide rail extends along the circumferential and axial directions of the rotating cylinder, so that the axial heights of two ends in the extending direction of the first slide rail are different. One end of the second lever is connected to the lever body, and the other end is cooperated with the first slide rail.

[0013] In some embodiments, the control device includes a paddle. The paddle is arranged on the outer circumferential surface of the rotating cylinder and extends along a spiral line. One surface of the thickness side of the paddle defines the first slide rail. The lever mechanism further includes a return spring. The return spring pushes the lever body, so that the second lever is always in contact and cooperation with the first slide rail.

[0014] In some embodiments, the control device further includes a sleeve. The sleeve is fixed to the housing and sleeved outside the rotating cylinder.

[0015] In some embodiments, the control device further includes a knob arranged on the top of the rotating cylinder. The knob is rigidly connected to the rotating cylinder, and the knob penetrates out of the housing.

[0016] In some embodiments, the bottom end of the rotating cylinder is configured as a second slide rail that extends along the circumferential and axial directions of the rotating cylinder, such that the axial heights of the two ends in the extending direction of the second slide rail are different. The floor brush assembly further includes: a lifting frame, the rear end of the lifting frame is hinged to the bottom of the housing through a rotating shaft, the rotating brush is located on the front side of the lifting frame, and the lifting frame has a mating portion that mates with the bottom of the second slide rail. During the rotation of the rotating cylinder and the process in which the mating portion slides from the high end to the low end of the second slide rail, the rotating cylinder supports the housing and drives the rotating brush to rotate around the rotating shaft in a direction that raises the rotating brush.

[0017] In some embodiments, the bottom of the second slide rail has a plurality of upwardly concave positioning grooves that are spaced apart along the circumferential direction of the rotating cylinder, and the top surface of the mating portion is configured as an upwardly convex positioning portion adapted to mate with the positioning grooves.

[0018] In some embodiments, when the rotating cylinder moves the lever mechanism to the first state, the mating portion moves to a position that mates with the low end of the second slide rail, and when the rotating cylinder moves the lever mechanism to the second state, the mating portion moves to a position that mates with the high end of the second slide rail.

[0019] In some embodiments, the drive assembly further includes a second drive wheel and a second transmission belt. The second transmission belt is tensioned around the first drive wheel and the second drive wheel, and the motor directly drives the second drive wheel to rotate. The first drive wheel includes a first hub and a second hub that are arranged in sequence along the rotation axis direction of the first drive wheel and are rigidly connected. The first transmission belt is wound around the first hub, and the second transmission belt is wound around the second hub.

[0020] The cleaning device according to the second aspect of the present invention includes the floor brush assembly for the cleaning device according to the first aspect of the present invention. By providing the floor brush assembly for the cleaning device according to the first aspect as described above, the overall manufacturing cost of the cleaning device is reduced.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective view of a floor brush assembly according to an embodiment of the present invention;

[0023] Figure 2 is an exploded view of some components of a floor brush assembly according to an embodiment of the present invention;

[0024] Figure 3It is a partial structural diagram of a floor brush assembly according to an embodiment of the present invention;

[0025] Figure 4 It is a partial structural diagram of a floor brush assembly according to an embodiment of the present invention;

[0026] Figure 5 It is a partial structural diagram of a floor brush assembly according to an embodiment of the present invention;

[0027] Figure 6 It is a partial structural diagram of a floor brush assembly according to an embodiment of the present invention;

[0028] Figure 7 It is a perspective view of a cleaning device according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] Floor brush assembly 100; Cleaning device 1000;

[0031] Housing 1; Dust suction port 10; Upper housing 11; Lower housing 12;

[0032] Rotating brush 2;

[0033] Drive assembly 3;

[0034] Motor 31; First drive wheel 32; First hub 321; Second hub 322;

[0035] First transmission belt 33; Second drive wheel 34; Second transmission belt 35;

[0036] Tensioning assembly 4;

[0037] Tensioning wheel 41;

[0038] Lever mechanism 42; Lever body 421; First arm 421a; Second arm 421b;

[0039] First lever 422; Second lever 423;

[0040] Fulcrum 424; Return spring 425;

[0041] Control device 43; Rotary cylinder 431; Support platform 4311; Second slide rail 4312; Low end a1; High end a2;

[0042] Positioning groove 4313; Paddle 432; First slide rail 4320;

[0043] Sleeve 433; Knob 434;

[0044] Lifting device 5; Lifting frame 50; Rotating shaft 51; Fitting part 52; Positioning part 521. Detailed implementation manners

[0045] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0046] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can recognize the applicability of other processes and / or the use of other materials.

[0047] Next, with reference to the accompanying drawings, a floor brush assembly 100 and a cleaning device 1000 having the same according to an embodiment of the present invention will be described. Herein, the type of the cleaning device 1000 is not limited and may be an upright vacuum cleaner (e.g., Figure 7 ), a handheld vacuum cleaner, a floor mopping vacuum cleaner, and the like. When the type of the cleaning device 1000 is determined, those skilled in the art can know the other components and operations in the cleaning device 1000 except for the floor brush assembly 100.

[0048] As Figure 1 and Figure 2 shown, the floor brush assembly 100 includes: a housing 1, a roller brush 2, a drive assembly 3, and a tensioning assembly 4. Among them, the housing 1 includes an installation cavity, and a dust suction port 10 is provided at the bottom of the installation cavity. The roller brush 2 is rotatably disposed in the installation cavity. It should be noted that the housing 1 may be an integral housing (this example is not shown in the figure), or may be assembled from a plurality of sub-housings. For example, in the example shown in Figure 2 , the housing 1 may be assembled from an upper housing 11 and a lower housing 12, so as to facilitate the installation of the floor brush assembly 100.

[0049] Combined with Figure 2 , the drive assembly 3 includes a motor 31, a first drive wheel 32, and a first transmission belt 33. The motor 31 directly or indirectly drives the first drive wheel 32 to rotate. The first transmission belt 33 is wound around the roller brush 2 and the first drive wheel 32, and when the first transmission belt 33 is tensioned, the roller brush 2 is driven to rotate by the first drive wheel 32.

[0050] As Figure 2As shown, the tensioning assembly 4 includes a tensioning wheel 41, a lever mechanism 42, and a control device 43. The tensioning wheel 41 is disposed on the lever mechanism 42 and moves with the lever mechanism 42 in a lever motion. The control device 43 controls the lever mechanism 42 to perform a lever motion between a first state and a second state. When the lever mechanism 42 moves to the first state, the tensioning wheel 41 tensions the first transmission belt 33. At this time, the motor 31 can drive the rolling brush 2 to rotate and clean through the first transmission belt 33. When the lever mechanism 42 moves to the second state, the tensioning wheel 41 relaxes the first transmission belt 33. At this time, the motor 31 cannot drive the rolling brush 2 to rotate through the first transmission belt 33, that is, the rolling brush 2 stops rotating. It should be noted that the lever motion described herein refers to the rotation around the fulcrum 424.

[0051] Thus, according to the floor brush assembly 100 of the embodiment of the present invention, it can be realized through the tensioning assembly 4 that during the cleaning process, the rolling brush 2 does not rotate when the rolling brush 2 is not used, and the rolling brush 2 rotates when the rolling brush 2 needs to be used. In addition, since the tensioning assembly 4 is driven by the lever mechanism 42 to move the tensioning wheel 41, the structure and assembly of the tensioning assembly 4 can be simplified, the design difficulty can be reduced, the cost of the tensioning assembly 4 can be reduced, and the action reliability of the tensioning assembly 4 can be ensured.

[0052] In some embodiments of the present invention, as Figure 2 shown, the drive assembly 3 further includes a second drive wheel 34 and a second transmission belt 35. The second transmission belt 35 is tensioned and wound around the first drive wheel 32 and the second drive wheel 34. The motor 31 directly drives the second drive wheel 34 to rotate. The first drive wheel 32 includes a first hub 321 and a second hub 322 that are arranged in sequence along the rotation axis 51 direction of the first drive wheel 32 and are rigidly connected. The first transmission belt 33 is wound around the first hub 321, and the second transmission belt 35 is wound around the second hub 322. Thus, when the motor 31 operates, the motor 31 can drive the second drive wheel 34 to rotate. The second drive wheel 34 drives the second hub 322 of the first drive wheel 32 to rotate through the second transmission belt 35. The second hub 322 drives the first hub 321 to rotate synchronously. When the first transmission belt 33 is tensioned, the first hub 321 can drive the rolling brush 2 to rotate through the first transmission belt 33.

[0053] Thus, since the motor 31 drives the rotary brush 2 to rotate through two transmission belts, the rotation speed of the rotary brush 2 can be effectively ensured to meet the usage requirements. Moreover, the motor 31 can be arranged at a position far from the rotary brush 2 as needed, facilitating the structural design of the brush assembly 100. In addition, it should be noted that the types of the first transmission belt 33 and the second transmission belt 35 are not limited. For example, in a specific example of the present invention, the first transmission belt 33 can be a V-belt, and the second transmission belt 35 can be a flat belt. Additionally, it should be noted that the "rigid connection" described herein means that two components are relatively stationary, such as being an integral part, or being welded, or being bonded, or being fixedly connected by a connecting member, etc.

[0054] In some embodiments of the present invention, as Figures 3 - 4 shown, the lever mechanism 42 includes: a lever body 421, a first lever 422, and a second lever 423. The lever body 421 rotates around a fulcrum 424. One end of the first lever 422 is connected to the lever body 421, and the other end is provided with a tension pulley 41. One end of the second lever 423 is connected to the lever body 421, and the other end is engaged with a control device 43. Thus, when the control device 43 causes the second lever 423 to move, the second lever 423 can cause the lever body 421 to drive the first lever 422 to perform a lever movement, so that the moving first lever 422 can drive the tension pulley 41 to perform an action of tensioning or loosening the first transmission belt 33.

[0055] Thus, by designing the lever mechanism 42 in this way, the relative positions of the tension pulley 41 and the control device 43 can be flexibly set, avoiding the interference of the control device 43 on the movement of the tension pulley 41, meeting the design requirements of different types of floor brush assemblies 100. For example, the control device 43 can be arranged at a position far from the first transmission belt 33, so that the installation position of the first transmission belt 33 conforms to the structural design of the rotary brush 2, and the installation position of the control device 43 conforms to the user's operation convenience requirements. It should be noted that the lever mechanism 42 can also be constructed into other structures, such as not including at least one of the first lever 422 and the second lever 423, etc.

[0056] In some embodiments, as Figure 3 and Figure 4 shown, the lever body 421 includes a first arm 421a and a second arm 421b located on both sides of the fulcrum 424. That is to say, one of the first arm 421a and the second arm 421b is a power arm, and the other is a resistance arm. The first lever 422 and the second lever 423 are both connected to the first arm 421a. Thus, the first lever 422 and the second lever 423 can be lifted and lowered synchronously, thereby reducing the design difficulty.

[0057] Combined with Figure 3 and Figure 4, the first lever 422 can be located on the side of the second lever 423 away from the fulcrum 424. Thus, when the second lever 423 has a small movement, the first lever 422 can have a large movement to meet the requirements of tensioning and relaxing the first drive belt 33, and reduce the driving difficulty of the control device 43 for the second lever 423.

[0058] As Figure 3 and Figure 4 shown, the first lever 422 and the second lever 423 are distributed on the transverse sides of the first force arm 421a, where the transverse direction refers to the direction parallel to the rotation axis of the lever body 421. Thus, the relative distance between the tensioning wheel 41 and the control device 43 can be increased, avoiding the interference of the control device 43 on the movement of the tensioning wheel 41, and meeting the design requirements of different types of floor brush assemblies 100. For example, the first drive belt 33 can be arranged near the side of the floor brush assembly 100, and the control device 43 can be arranged in the center of the floor brush assembly 100 to facilitate operation and the internal structure layout of the floor brush assembly 100, and is convenient for user operation.

[0059] In some embodiments of the present invention, as Figure 4 and Figure 5 shown, the control device 43 includes a rotating cylinder 431. The circumferential wall surface of the rotating cylinder 431 has a first slide rail 4320, and the first slide rail 4320 extends along the circumferential and axial directions of the rotating cylinder 431, so that the axial heights at both ends in the extending direction of the first slide rail 4320 are different (that is, the two ends of the first slide rail 4320 are not located on the same cross-section of the rotating cylinder 431, or the distances from the two ends of the first slide rail 4320 to the bottom surface of the housing 1 are different). The lever mechanism 42 includes the above-mentioned lever body 421 and the second lever 423 at this time (in addition, the lever mechanism 42 can include the first lever 422 or not include the first lever 422 at this time). One end of the second lever 423 is connected to the lever body 421, and the other end of the second lever 423 cooperates with the first slide rail 4320. In this way, when the first rotating cylinder 431 rotates around its own axis, the second lever 423 can be driven to drive the lever body 421 to move through the cooperation between the first slide rail 4320 and the second lever 423, so as to drive the lever mechanism 42 to perform a lever movement. Thus, according to the embodiment of the present invention, the structure of the control device 43 is ingenious, and the lever movement of the lever mechanism 42 can be driven by the rotational movement of the rotating cylinder 431, so as to drive the tensioning wheel 41 to perform tensioning and relaxing actions.

[0060] It should be noted that the formation method of the first slide rail 4320 is not limited. For example, it can be defined by a slot hole penetrating the circumferential wall surface of the rotating cylinder 431. Another example is that it can also be defined by a structural member arranged on the outer circumferential surface of the rotating cylinder 431. For example, in Figure 4 and Figure 5In the illustrated example, the control device 43 includes a paddle 432. The paddle 432 is provided on the outer peripheral surface of the rotary cylinder 431 and extends along a spiral (where the spiral can be, but is not limited to, a cylindrical spiral). One surface on the thickness side of the paddle 432 defines a first slide rail 4320 (for example Figure 4 and Figure 5 the upper surface or the lower surface of the paddle 432 shown in). The lever mechanism 42 further includes a return spring 425. The return spring 425 pushes the lever body 421 so that the second lever 423 is always in contact and cooperation with the first slide rail 4320. Thus, the reliability of the driving of the second lever 423 by the control device 43 can be ensured.

[0061] It should be noted that the specific type of the return spring 425 is not limited. For example, it can be a cylindrical spring, a disc spring or a torsion spring, etc., and the installation position of the return spring 425 is not limited. For example, it can be arranged on the same lever arm as the second lever 423 or on different lever arms respectively. For example, in Figure 4 the illustrated example, when the first lever 422 and the second lever 423 are both connected to the first lever arm 421a and the fulcrum 424 can be a rotating shaft, the return spring 425 can be a torsion spring wound around the rotating shaft. One protruding end of the torsion spring is supported on a structural member that is relatively stationary with respect to the fulcrum 424, and the other protruding end of the torsion spring applies an upward elastic force to the second lever arm 421b so that the first lever arm 421a receives a downward elastic force, thereby ensuring that the second lever 423 is always pressed on the first slide rail 4320.

[0062] In some embodiments of the present invention, as Figure 4 and Figure 5 shown, the control device 43 may further include a sleeve 433. The sleeve 433 is fixed to (directly or indirectly fixed to) the housing 1 and sleeved outside the rotary cylinder 431. Thus, it can simply and effectively ensure that the rotary cylinder 431 rotates around its own axis, so that there is no need to provide a bottom support seat or a top support seat, etc., and further the structure can be simplified, and functional structural components can be provided at both the bottom and the top of the rotary cylinder 431.

[0063] In some embodiments of the present invention, as Figure 4 and Figure 5As shown, the housing 1 has a perforation. The control device 43 further includes a knob 434 provided at the top of the rotary cylinder 431. The knob 434 passes through the perforation to the outside of the housing 1. The knob 434 is rigidly connected to the rotary cylinder 431 (as described above, "rigid connection" means that two components are relatively stationary, for example, they can be an integral part, or welded, or bonded, or fixedly connected by a connecting member, etc.). Thus, the user can control the rotation and stop of the roller brush 2 by rotating the knob 434, thereby simplifying the operation. Moreover, by rotating the knob 434, the rotary cylinder 431 can be rotated very simply. Of course, the present invention is not limited to this, and the knob 434 can also be replaced with a button or other structures. The button and the rotary cylinder 431 can be matched by a wedge surface, so that the pressing action on the button can be converted into the rotation action of the rotary cylinder 431.

[0064] In some embodiments of the present invention, the floor brush assembly 100 may further include a lifting device 5. The lifting device 5 is adapted to support the ground (for example, in some examples, the lifting device 5 may include rollers for supporting the ground to ensure that the floor brush assembly 100 can travel smoothly on the ground). The lifting device 5 cooperates with the housing 1 and the control device 43 respectively. The control device 43 is configured such that during the process of the control device 43 controlling the lever mechanism 42 to move from the second state to the first state, through the cooperation between the control device 43 and the lifting device 5, and the cooperation between the lifting device 5 and the housing 1, the housing 1 is linked to drive the roller brush 2 to be lifted relative to the lifting device 5. That is to say, during the process of the roller brush 2 rotating from a stop state, the dust suction port 10 can be raised relative to the ground. Since the roller brush 2 is rotatably mounted on the housing 1, the roller brush 2 is also raised relative to the ground. Therefore, the frictional resistance between the roller brush 2 and the ground can be reduced. Thus, the control device 43 can have a dual function, not only can control whether the roller brush 2 rotates or not, but also can realize the lifting and lowering of the roller brush 2 relative to the ground, thereby enriching the functions of the control device 43, improving the structural compactness, and simplifying the overall structure of the floor brush assembly 100.

[0065] It should be noted that the specific type of the lifting device 5 is not limited. For example, a specific structure of the lifting device 5 will be given later, but the present invention is not limited to this. Figure 6, the bottom end (circular end face) of the rotating cylinder 431 is configured as a second slide rail 4312. The second slide rail 4312 extends along the circumferential and axial directions of the rotating cylinder 431 (for example, the second slide rail 4312 can extend along a cylindrical helix, etc.), so that the axial heights of the two ends in the extending direction of the second slide rail 4312 are different (that is, the two ends of the second slide rail 4312 are not located on the same cross-section of the rotating cylinder 431, or in other words, the distances from the two ends of the second slide rail 4312 to the bottom surface of the housing 1 are different). The floor brush assembly 100 further includes: a lifting frame 50. The rear end of the lifting frame 50 is hinged to the bottom of the housing 1 through a rotating shaft 51 (the rotating shaft 51 can be provided on the lifting frame 50 or the housing 1). The dust suction port 10 is located on the front side of the lifting frame 50. The lifting frame 50 has a mating portion 52 that mates with the bottom of the second slide rail 4312. It should be noted that the "front" described in this article refers to the front side of the user when using the floor brush assembly 100, and the "rear" refers to the rear side of the user when using the floor brush assembly 100.

[0066] As Figure 6 shown, during the process of the rotating cylinder 431 rotating and the mating portion 52 sliding from the high end a2 of the second slide rail 4312 to the low end a1 of the second slide rail 4312, the rotating cylinder 431 supports the housing 1 to drive the roller brush 2 to rotate around the rotating shaft 51 in the direction of raising the roller brush 2, that is, the part of the housing 1 located in front of the rotating shaft 51 rotates and rises relative to the lifting frame 50. It can be understood that during the use of the floor brush assembly 100, the lifting frame 50 can be supported on the ground. When the mating portion 52 slides from the high end a2 of the second slide rail 4312 to the low end a1 of the second slide rail 4312, it indicates that the rotating cylinder 431 gradually rises along its own axis relative to the lifting frame 50. At this time, the rotating cylinder 431 can support the front part of the housing 1 to rise together. At this time, the distance between the roller brush 2 and the ground can be increased, and the movement resistance of the roller brush 2 can be reduced.

[0067] Similarly, conversely, as Figure 6 shown, during the process of the rotating cylinder 431 rotating and the mating portion 52 sliding from the low end a1 of the second slide rail 4312 to the high end a2 of the second slide rail 4312, the rotating cylinder 431 supports the housing 1 to drive the roller brush 2 to rotate around the rotating shaft 51 in the direction of lowering the roller brush 2, that is, the part of the housing 1 located in front of the rotating shaft 51 rotates and descends relative to the lifting frame 50. It can be understood that during the use of the floor brush assembly 100, the lifting frame 50 can be supported on the ground. When the mating portion 52 slides from the low end a1 of the second slide rail 4312 to the high end a2 of the second slide rail 4312, it indicates that the rotating cylinder 431 gradually descends along its own axis relative to the lifting frame 50. At this time, the rotating cylinder 431 can support the front part of the housing 1 to descend together. At this time, the distance between the roller brush 2 and the dust suction port 10 and the ground can be reduced, ensuring the dust suction effect of the floor brush assembly 100.

[0068] It should be noted that the cooperation between the lifting frame 50 and the rotating cylinder 431 can satisfy that "when the control device 43 controls the lever mechanism 42 to move from the second state to the first state, the linkage housing 1 drives the roller brush 2 to be lifted relative to the lifting device 5", or it may not satisfy this condition. When it does not satisfy, there are multiple possibilities. For example, "when the control device 43 controls the lever mechanism 42 to move from the second state to the first state, the linkage housing 1 drives the roller brush 2 to be lowered relative to the lifting device 5", and so on. Hereinafter, only the case where the cooperation between the lifting frame 50 and the rotating cylinder 431 satisfies that "when the control device 43 controls the lever mechanism 42 to move from the second state to the first state, the linkage housing 1 drives the roller brush 2 to be lifted relative to the lifting device 5" will be taken as an example for description.

[0069] As Figure 5 and Figure 6 shown, when the rotating cylinder 431 moves the lever mechanism 42 to the first state, not only does it make the tension wheel 41 tension the first transmission belt 33 and make the roller brush 2 rotate, but also, at this time, the engaging portion 52 moves to a position where it engages with the lower end a1 of the second slide rail 4312, thereby ensuring that the roller brush 2 can be lifted, and thus the rolling resistance of the roller brush 2 can be reduced.

[0070] As Figure 4 and Figure 6 shown, when the rotating cylinder 431 moves the lever mechanism 42 to the second state, not only does it make the tension wheel 41 loosen the first transmission belt 33 and make the roller brush 2 stop rotating, but also, at this time, the engaging portion 52 moves to a position where it engages with the upper end a2 of the second slide rail 4312, thereby ensuring that the roller brush 2 and the dust suction port 10 can be lowered, and thus the dust suction effect of the floor brush assembly 100 can be ensured.

[0071] It should be noted that the manner in which the rotating cylinder 431 supports the housing 1 is not limited. For example, in the example shown in Figure 6 , the housing 1 may include an extension portion extending downward from the edge of the perforation. The top of the rotating cylinder 431 has a support platform 4311 supported on the bottom of the extension portion. Thus, when the rotating cylinder 431 rises along its own axis, the rotating cylinder 431 can support the extension portion through the support platform 4311, so that the housing 1 is lifted.

[0072] Furthermore, as Figure 6 shown, the bottom of the second slide rail 4312 has a plurality of upwardly concave positioning grooves 4313 spaced circumferentially along the rotating cylinder 431. The top surface of the engaging portion 52 is configured as an upwardly convex positioning portion 521 adapted to cooperate with the positioning grooves 4313. Thus, positioning can be achieved. For example, when the engaging portion 52 reaches the position where it engages with the lower end a1 of the second slide rail 4312, the roller brush 2 is lifted. At this time, the positioning portion 521 engages with a positioning groove 4313 (such asFigure 6 It cooperates with the positioning groove 4313 at the low end a1 shown in [reference], so as to ensure that the housing 1 is maintained in the state where the rolling brush 2 is lifted. For another example, when the engaging portion 52 reaches the position where it cooperates with the high end a2 of the second slide rail 4312, the rolling brush 2 can fall. At this time, the positioning portion 521 cooperates with another positioning groove 4313 (such as Figure 6 the positioning groove 4313 at the high end a2 shown in [reference]), so as to ensure that the housing 1 is maintained in the state where the rolling brush 2 falls.

[0073] In summary, according to at least one embodiment of the present invention, the floor brush assembly 100 for the cleaning device 1000 can realize the rotation and stop of the rolling brush 2 without using a complex clutch mechanism. Moreover, the "control device 43 for controlling the rotation and stop of the rolling brush 2" can be integrated with the "control device for controlling the lifting and lowering of the rolling brush 2" into one. When the rolling brush 2 needs to rotate, the rolling brush 2 is lifted simultaneously, so that the user does not need to separately control and adjust, avoiding misoperation and ensuring cleaning reliability and operation convenience.

[0074] When the knob 434 in the control device 43 rotates to the first position, through the cooperation of the first slide rail 4320 and the lever mechanism 42, the tension pulley 41 is driven to tension the first transmission belt 33 for driving the rolling brush 2 to rotate, realizing the rolling of the rolling brush 2. At the same time, through the cooperation of the second slide rail 4312 and the lifting frame 50, the housing 1 is driven to drive the lifting of the rolling brush 2. When the knob 434 rotates to the second position, through the cooperation of the first slide rail 4320 and the lever mechanism 42, the tension pulley 41 is driven to loosen the first transmission belt 33 for driving the rolling brush 2 to rotate, realizing the stop of the rolling brush 2. At the same time, through the cooperation of the second slide rail 4312 and the lifting frame 50, the housing 1 is driven to drive the lowering of the rolling brush 2.

[0075] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0076] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A floor brush assembly for a cleaning device, characterized in that, Comprising: A housing; A rotary brush, which is rotatably arranged on the housing; A driving assembly, the driving assembly includes a motor, a first driving wheel and a first transmission belt, the motor directly or indirectly drives the first driving wheel to rotate, the first transmission belt is wound around the rotary brush and the first driving wheel, and drives the rotary brush to rotate through the first driving wheel when tightened; And A tensioning assembly, the tensioning assembly includes a tensioning wheel, a lever mechanism and a control device, the tensioning wheel is arranged on the lever mechanism and moves with the lever mechanism as a lever, the control device controls the lever mechanism to move as a lever between a first state and a second state, when the lever mechanism moves to the first state, the tensioning wheel tightens the first transmission belt, and when the lever mechanism moves to the second state, the tensioning wheel loosens the first transmission belt; Further comprising: A lifting device, the lifting device is adapted to support the ground, the lifting device cooperates with the housing and the control device respectively, and the control device is configured such that: during the process of the control device controlling the lever mechanism to move from the second state to the first state, the housing is linked to drive the rotary brush to lift relative to the lifting device; The control device includes a rotary cylinder, the bottom end of the rotary cylinder is configured as a second slide rail, the second slide rail extends along the circumferential and axial directions of the rotary cylinder, so that the axial heights of the two ends in the extending direction of the second slide rail are different, and the floor brush assembly further includes: a lifting frame, the rear end of the lifting frame is hinged to the bottom of the housing through a rotating shaft, the rotary brush is located on the front side of the lifting frame, and the lifting frame has a matching portion that cooperates with the bottom of the second slide rail. During the rotation of the rotary cylinder and the process of the matching portion sliding from the high end of the second slide rail to the low end of the second slide rail, the rotary cylinder supports the housing to drive the rotary brush to rotate together around the rotating shaft in the direction of lifting the rotary brush.

2. The floor brush assembly for a cleaning device according to claim 1, wherein, The lever mechanism includes: a lever body, a first lever and a second lever, the lever body rotates around a fulcrum, one end of the first lever is connected to the lever body and the other end installs the tensioning wheel, and one end of the second lever is connected to the lever body and the other end cooperates with the control device.

3. The floor brush assembly for a cleaning device according to claim 2, characterized in that, The lever body includes a first arm and a second arm located on both sides of the fulcrum, and the first lever and the second lever are both connected to the first arm.

4. The floor brush assembly for a cleaning device according to claim 3, wherein, The first lever is located on the side of the second lever away from the fulcrum.

5. The floor brush assembly for a cleaning device according to claim 3, wherein, The first lever and the second lever are distributed on the transverse sides of the first arm.

6. The floor brush assembly for a cleaning device according to claim 1, wherein, The lever mechanism includes: a lever body and a second lever, the lever body rotates around a fulcrum, the circumferential wall surface of the rotary cylinder has a first slide rail, the first slide rail extends along the circumferential and axial directions of the rotary cylinder, so that the axial heights of the two ends in the extending direction of the first slide rail are different, and one end of the second lever is connected to the lever body and the other end cooperates with the first slide rail.

7. The floor brush assembly for a cleaning device according to claim 6, characterized in that, The control device includes paddles, which are arranged on the outer peripheral surface of the rotating cylinder and extend along a spiral line. One surface of the thickness side of the paddle defines the first slide rail. The lever mechanism further includes a return spring, and the return spring pushes the lever body so that the second lever always contacts and cooperates with the first slide rail.

8. The floor brush assembly for a cleaning device according to claim 6, wherein, The control device further includes a sleeve, which is fixed to the housing and sleeved outside the rotating cylinder.

9. The floor brush assembly for a cleaning device according to claim 6, wherein The control device further includes a knob arranged on the top of the rotating cylinder. The knob is rigidly connected to the rotating cylinder and extends out of the housing.

10. The floor brush assembly for a cleaning device according to claim 9, characterized in that, The bottom of the second slide rail has a plurality of upwardly concave positioning grooves spaced circumferentially along the rotating cylinder, and the top surface of the engaging portion is configured as an upwardly convex positioning portion adapted to cooperate with the positioning grooves.

11. The floor brush assembly for a cleaning device according to claim 9, wherein, When the rotating cylinder moves the lever mechanism to the first state, the engaging portion moves to a position where it cooperates with the lower end of the second slide rail. When the rotating cylinder moves the lever mechanism to the second state, the engaging portion moves to a position where it cooperates with the upper end of the second slide rail.

12. The floor brush assembly for a cleaning device according to any one of claims 1-11, characterized in that, The drive assembly further includes a second drive wheel and a second transmission belt. The second transmission belt is tensioned around the first drive wheel and the second drive wheel. The motor directly drives the second drive wheel to rotate. The first drive wheel includes a first hub and a second hub arranged in sequence along the rotation axis direction of the first drive wheel and rigidly connected. The first transmission belt is wound around the first hub, and the second transmission belt is wound around the second hub.

13. A cleaning device, characterized in that, It includes a floor brush assembly for a cleaning device according to any one of claims 1-12.

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