Floor brush assembly and dust collector

Abstract

The invention discloses a floor brush assembly and a dust collector, and the floor brush assembly comprises a floor brush shell; the rolling brush assembly is arranged in the floor brush shell and connected with the floor brush shell through a connecting assembly; the connecting assembly is arranged at the two ends of the rolling brush assembly and comprises a connecting shaft, a connecting arm and a rolling brush connecting part, the two ends of the connecting arm are connected with the connecting shaft and the rolling brush connecting part respectively, the connecting shaft is installed in the floor brush shell, and the rolling brush connecting part is connected with the rolling brush assembly; the connecting arm and the rolling brush connecting part can drive the rolling brush assembly to rotate around the connecting shaft within a certain range, so that the rolling brush assembly can adjust the relative position of the rolling brush assembly in the floor brush shell according to different to-be-cleaned faces. According to the floor brush assembly, the friction force of the floor brush assembly on the high-hair and high-resistance carpet can be reduced, the situation that the floor brush assembly cannot clean an uneven to-be-cleaned face is avoided, meanwhile, noise is optimized, and the service life of the floor brush assembly is prolonged.

Description

Technical Field

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

[0002] In existing vacuum cleaner floor brush assemblies, the roller brush assembly is connected to the floor brush housing via a connecting assembly. The connecting assembly is fixedly connected to the floor brush housing and always remains relatively stationary relative to the floor brush housing. The roller brush shaft of the roller brush assembly is connected to the connecting assembly, so that the roller brush shaft always rotates in the same position during cleaning. This can result in residual dirt when cleaning uneven surfaces, or cause the brush to stop working due to excessive resistance when cleaning high-hair, high-resistance carpets, even shortening the service life of the floor brush assembly. Furthermore, the brush is noisy during cleaning. Summary of the Invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a floor brush assembly and a vacuum cleaner that can reduce the friction of the floor brush assembly on high-hair and high-resistance carpets, and avoid the situation where the floor brush assembly does not clean thoroughly on uneven surfaces to be cleaned, while optimizing noise and extending the service life of the floor brush assembly.

[0004] In order to solve the above technical problems, the present invention provides a floor brush assembly, comprising:

[0005] Floor brush housing;

[0006] A roller brush assembly is provided in the floor brush housing and connected to the floor brush housing via a connecting assembly;

[0007] The connecting assembly is provided at both ends of the roller brush assembly, and includes a connecting shaft, a connecting arm and a roller brush connecting portion, the two ends of the connecting arm are respectively connected to the connecting shaft and the roller brush connecting portion, the connecting shaft is installed in the floor brush housing, and the roller brush connecting portion is connected to the roller brush assembly;

[0008] The connecting arm and the roller brush connecting portion can drive the roller brush assembly to rotate around the connecting axis within a certain range, so that the roller brush assembly can change the distance between the roller brush assembly and the surface to be cleaned according to different surfaces to be cleaned.

[0009] In a feasible implementation, the floor brush housing includes a first shell and a second shell that are arranged opposite to each other in the up and down directions, a cleaning cavity is defined between the first shell and the second shell, and the roller brush assembly is installed in the cleaning cavity.

[0010] In a feasible implementation, a first protrusion is provided on the inner wall of the first shell, and a second protrusion is provided on the inner wall of the second shell. When the first shell and the second shell are covered, the first protrusion is connected to the second protrusion.

[0011] A first groove is provided on the end of the first protrusion connected to the second protrusion, a second groove is provided on the end of the second protrusion connected to the first protrusion, and the connecting shaft is installed in the installation hole formed by the first groove and the second groove.

[0012] In a feasible implementation, the sizes of the first groove and the second groove are adapted to the size of the connecting shaft.

[0013] In a feasible implementation, a first rib is provided on the inner wall of the first shell, a first notch is provided on the first rib, a second rib is provided on the inner wall of the second shell, a second notch is provided on the second rib, when the first shell and the second shell are covered, the first rib and the second rib are connected, and the connecting arm is installed in the first notch and the second notch.

[0014] In a feasible implementation, the arm width of the connecting arm along the up-down direction is smaller than the sum of the depths of the first notch and the second notch.

[0015] In a feasible implementation, the floor brush assembly further includes a tooth comb assembly, which is arranged between the first shell and the second shell; the roller brush assembly includes a cleaning body and bristles arranged on the cleaning body;

[0016] The tooth comb assembly extends into the cleaning cavity, the end of the tooth comb assembly is arranged toward the cleaning body, and part of the tooth comb assembly extends into the bristles.

[0017] In a feasible implementation, a plurality of pressing plates are provided on the bottom end of the second shell, wherein the pressing plates are higher than the bottom end of the second shell and connected to the bottom end of the second shell;

[0018] The second shell is provided with a plurality of air inlets, each of which corresponds to the pressing plate in a one-to-one manner, and the air inlets are located at the front end of the pressing plate.

[0019] In a feasible implementation, an opening is provided on the second shell, and the opening can expose the roller brush assembly. The opening is connected with the cleaning cavity to form a main air duct; the air inlet is connected with the cleaning cavity to form an auxiliary air duct.

[0020] In a feasible implementation, a pressure relief hole is provided on the first shell, and a pressure relief valve is installed on the pressure relief hole. When the pressure relief valve is opened, the pressure relief valve exposes the pressure relief hole so that the pressure relief hole is connected to the clean chamber fluid; when the pressure relief valve is closed, the pressure relief valve covers the pressure relief hole.

[0021] In a feasible implementation, the first housing includes a first fixed shell cover and a first detachable shell cover, the first fixed shell cover is provided with a button, and the button is slid to separate the first detachable shell cover from the first fixed shell cover.

[0022] In a feasible implementation, the floor brush assembly further includes an impeller assembly and a rotating assembly, and the impeller assembly drives the rotating assembly to rotate thereby driving the roller brush assembly.

[0023] In a feasible implementation, the impeller assembly includes an impeller housing, an impeller arranged in the impeller housing, an impeller shaft and an impeller bracket, the impeller is sleeved on the impeller shaft, and the impeller bracket is arranged at both ends of the impeller shaft;

[0024] A rotating ball is provided in the impeller bracket, and both ends of the impeller shaft are provided in the rotating ball and rotate relative to the rotating ball.

[0025] In a feasible implementation, the impeller housing is rotatable around a rotation axis, and the rotation axis is arranged parallel to the impeller axis.

[0026] In a feasible implementation, a disassembly cover plate is provided on the second outer shell. The disassembly cover plate is located at the bottom end of the impeller housing and is detachable relative to the second outer shell.

[0027] In a feasible implementation, the rotating assembly includes a first pulley, a second pulley and a belt, the first pulley is sleeved on the rotating shaft of the cleaning body, the second pulley is sleeved on the impeller shaft, and the belt is tensioned between the first pulley and the second pulley.

[0028] In a feasible implementation, the axis of the connecting shaft is arranged between the axis of the impeller shaft and the axis of the roller brush assembly.

[0029] Correspondingly, the present invention also provides a vacuum cleaner comprising the floor brush assembly as described in the first aspect of the present invention.

[0030] The implementation of the present invention has the following beneficial effects:

[0031] The present application provides a floor brush assembly and a vacuum cleaner, wherein the floor brush assembly comprises: a floor brush housing; a roller brush assembly, which is arranged in the floor brush housing and connected to the floor brush housing via a connecting assembly; a connecting assembly, which is arranged at both ends of the roller brush assembly and comprises a connecting shaft, a connecting arm and a roller brush connecting portion, the two ends of the connecting arm being respectively connected to the connecting shaft and the roller brush connecting portion, the connecting shaft being installed in the floor brush housing, and the roller brush connecting portion being connected to the roller brush assembly; the connecting arm and the roller brush connecting portion can drive the roller brush assembly to rotate around the connecting shaft within a certain range, so that the roller brush assembly can adjust its relative position in the floor brush housing according to different surfaces to be cleaned. This can reduce the friction of the floor brush assembly on high-hair and high-resistance carpets, and avoid the situation where the floor brush assembly does not clean properly on uneven surfaces to be cleaned, while optimizing noise and extending the service life of the floor brush assembly.

[0032] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0034] Figure 1 This is a schematic diagram of the disassembled structure of the floor brush assembly according to one embodiment of the present invention;

[0035] Figure 2 1 is a schematic structural diagram of a floor brush assembly according to an embodiment of the present invention when the pressure relief valve is closed;

[0036] Figure 3 is a cross-sectional view of a floor brush assembly according to an embodiment of the present invention when the pressure relief valve is closed;

[0037] Figure 4 1 is a schematic structural diagram of a floor brush assembly according to an embodiment of the present invention when the pressure relief valve is open;

[0038] Figure 5 is a cross-sectional view of a floor brush assembly according to an embodiment of the present invention when the pressure relief valve is open;

[0039] Figure 6 is a structural schematic diagram of a first housing according to an embodiment of the present invention;

[0040] Figure 7 yes Figure 6 A magnified view of some structures;

[0041] Figure 8 This is a schematic diagram of the structure of the second housing according to an embodiment of the present invention. Figure 1 ;

[0042] Figure 9 This is a schematic diagram of the structure of the second housing according to an embodiment of the present invention. Figure 2 ;

[0043] Figure 10 yes Figure 9 A magnified view of some structures;

[0044] Figure 11 This is a partial structural diagram of a floor brush assembly according to an embodiment of the present invention;

[0045] Figure 12 is a partial structural cross-sectional view of a floor brush assembly according to an embodiment of the present invention;

[0046] Figure 13 This is a schematic diagram of the disassembled structure of part of the floor brush assembly according to one embodiment of the present invention;

[0047] Figure 14 This is a schematic structural diagram of the roller brush assembly, the rotating assembly, the connecting assembly and the impeller assembly according to one embodiment of the present invention;

[0048] Figure 15 This is a structural diagram of the roller brush assembly and the connecting assembly according to an embodiment of the present invention;

[0049] Figure 16 is a structural schematic diagram of an impeller assembly according to an embodiment of the present invention;

[0050] Figure 17 yes Figure 16 A cross-sectional view of the impeller assembly is shown;

[0051] Figure 18 This is a schematic diagram of the structure of the impeller shaft, connecting assembly and roller brush assembly according to an embodiment of the present invention. Figure 1 ;

[0052] Figure 19 This is a schematic diagram of the structure of the impeller shaft, connecting assembly and roller brush assembly according to an embodiment of the present invention. Figure 2 .

[0053] Reference numerals in the figures:

[0054] 1- floor brush housing, 11- first housing, 111- first protrusion, 112- first groove, 113- first rib, 114- first notch, 115- pressure relief valve, 116- first fixed housing cover, 1161- button, 117- first disassembly housing cover, 118- pressure relief hole, 12- second housing, 121- second protrusion, 122- second groove, 123- second rib, 124- second notch, 125- pressure plate, 126- air inlet, 127- opening, 128- disassembly cover, 13- cleaning chamber;

[0055] 2-roller brush assembly, 21-cleaning body, 22-bristles;

[0056] 3-connecting assembly, 31-connecting shaft, 32-connecting arm, 33-roller brush connecting part;

[0057] 4-tooth comb assembly;

[0058] 5-impeller assembly, 51-impeller housing, 52-impeller, 53-impeller shaft, 54-impeller bracket, 55-rotating ball, 56-rotating shaft;

[0059] 6-rotating assembly, 61-first pulley, 62-second pulley, 63-belt. DETAILED DESCRIPTION

[0060] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0061] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0063] During use, a vacuum cleaner uses the floor brush assembly to clean floors, carpets, and the like. The roller brush assembly in the floor brush assembly rotates to pick up hair, dust, and the like from the floor and carpet, and then uses suction to draw the hair, dust, and the like into the dust box. This improves the vacuuming efficiency of the vacuum cleaner compared to vacuum cleaners with only a suction port, making it more suitable for cleaning carpets. However, during this process, the roller brush assembly and the floor brush housing of the floor brush assembly are fixedly connected by a connecting assembly, which makes the connecting assembly susceptible to wear. Furthermore, when operating on uneven surfaces to be cleaned, the relative position of the roller brush assembly within the floor brush assembly remains unchanged, resulting in the floor brush housing contacting the higher surface to be cleaned. This creates a large gap between the roller brush assembly and the lower surface to be cleaned, potentially preventing the lower surface from being cleaned properly and leaving residual dirt. Furthermore, when cleaning high-hair, high-resistance carpets, the carpet hair can block the suction port of the floor brush assembly, causing the impeller and the roller brush assembly to stop rotating.

[0064] This embodiment provides a floor brush assembly, such as Figure 1 、 2 , 11 and 15, comprising: a floor brush housing 1; a roller brush assembly 2, which is arranged in the floor brush housing 1 and connected to the floor brush housing 1 through a connecting assembly 3; a connecting assembly 3, which is arranged at both ends of the roller brush assembly 2, comprising a connecting shaft 31, a connecting arm 32 and a roller brush connecting portion 33, the two ends of the connecting arm 32 are respectively connected to the connecting shaft 31 and the roller brush connecting portion 33, the connecting shaft 31 is installed in the floor brush housing 1, and the roller brush connecting portion 33 is connected to the roller brush assembly 2; the connecting arm 32 and the roller brush connecting portion 33 can drive the roller brush assembly 2 to rotate around the connecting shaft 31 within a certain range, so that the roller brush assembly 2 can adjust the relative position of the roller brush assembly 2 in the floor brush housing 1 according to different surfaces to be cleaned. The connecting component 3 connects the floor brush shell 1 and the roller brush assembly 2. The connecting arm 32 and the roller brush connecting part 33 in the connecting component 3 and the relative positions of the roller brush assembly 2 in the floor brush assembly can be changed. When the roller brush assembly 2 cleans the uneven surface to be cleaned, the floor brush shell 1 contacts the higher surface to be cleaned, and the bottom end of the roller brush assembly 2 faces the lower surface to be cleaned. In previous floor brush assemblies, since the connecting component 3 is fixed, the roller brush assembly 2 always remains fixed in relative position with the floor brush shell 1, but in this application, the roller brush assembly 2 can gradually approach the lower surface to be cleaned under the action of gravity, so that the roller brush assembly 2 can have a better cleaning effect on the lower surface to be cleaned. Similarly, when the surface to be cleaned is a high-hair, high-resistance carpet, in previous floor brush assemblies, when the floor brush assembly is cleaning on the high-hair, high-resistance carpet, it is easy for the carpet hair to block the suction port of the floor brush housing 1, causing the roller brush assembly 2 to stop rotating. In this embodiment, because the roller brush assembly 2, the connecting arm 32 and the roller brush connecting part 33 can rotate, the air flow in the floor brush housing 1 can be exchanged with the outside world, and the roller brush assembly 2 will not be blocked.

[0065] In one possible implementation, Figure 1-5 As shown, the floor brush housing 1 includes a first shell 11 and a second shell 12 that are oppositely arranged in the up and down directions. A cleaning cavity 13 is defined between the first shell 11 and the second shell 12, and the roller brush assembly 2 is installed in the cleaning cavity 13. One end of the cleaning chamber 13 is connected to the atmosphere, and the other end of the cleaning chamber 13 is connected to the negative pressure source fluid of the vacuum cleaner. In this embodiment, it is a pneumatic floor brush. The negative pressure source generates a pressure difference, generating a high-speed fluid flowing from the cleaning chamber 13 to the negative pressure source. The high-speed fluid passes through the impeller 52, driving the impeller 52 to rotate, and the rotation of the impeller 52 drives the roller brush assembly 2 to rotate, instead of setting a separate roller brush motor to drive the roller brush assembly 2 to rotate. This setting can reduce the weight of the floor brush assembly and reduce the cost of the floor brush assembly, but it will result in insufficient suction force, and after the cleaning chamber 13 is blocked, the roller brush assembly 2 will stop rotating. The setting of the connecting assembly 3 can prevent the roller brush assembly 2 from always being fixed at the same position in the floor brush housing 1, but will adjust its relative position in the floor brush housing 1 according to different cleaning surfaces, making the movement of the roller brush assembly 2 more flexible, and during the vacuuming process, since the roller brush assembly 2 moves up and down in the floor brush housing 1, the degree of connection between the cleaning chamber 13 and the atmosphere can be increased, thereby avoiding blockage of the floor brush assembly. The floor brush housing 1 is configured as a structure in which the first shell 11 and the second shell 12 are connected, which can facilitate the demoulding of the first shell 11 and the second shell 12. Compared with the floor brush housing 1 as an integral structure, it is convenient for the production of the floor brush housing 1, and in the event that the first shell 11 or the second shell 12 is damaged, only the damaged shell can be replaced.

[0066] In one possible implementation, Figure 6-10 As shown, a first protrusion 111 is provided on the inner wall of the first shell 11, and a second protrusion 121 is provided on the inner wall of the second shell 12. When the first shell 11 and the second shell 12 are covered, the first protrusion 111 and the second protrusion 121 are connected; a first groove 112 is provided on the end of the first protrusion 111 connected to the second protrusion 121, and a second groove 122 is provided on the end of the second protrusion 121 connected to the first protrusion 111. The connecting shaft 31 is installed in the mounting hole formed by the first groove 112 and the second groove 122. Both the first shell 11 and the second shell 12 have a certain wall thickness. The first protrusion 111 and the second protrusion 121 are provided to provide support points for the installation of the connecting shaft 31. The first groove 112 and the second groove 122 are respectively provided at the ends connected to the first protrusion 111 and the second protrusion 121. The connecting shaft 31 is installed in the first groove 112 and the second groove 122, so that the connecting shaft 31 is clamped between the first shell 11 and the second shell 12, and the direction of the axis of the connecting shaft 31 is the same as the long side direction of the first shell 11 and the second shell 12.

[0067] In one possible implementation, the sizes of the first groove 112 and the second groove 122 match the sizes of the connecting shaft 31. The sizes of the first groove 112 and the second groove 122 can just accommodate the connecting shaft 31, and it is necessary to ensure that the connecting shaft 31 can only rotate within the first groove 112 and the second groove 122 and cannot move in any other direction within the first groove 112 and the second groove 122.

[0068] In one possible implementation, Figure 6-10 As shown, the inner wall of the first housing 11 is provided with a first rib 113, which is provided with a first notch 114. The inner wall of the second housing 12 is provided with a second rib 123, which is provided with a second notch 124. When the first and second housings 11 and 12 are closed, the first and second ribs 113 and 123 are connected, and the connecting arm 32 is installed within the first and second notches 114 and 124. The provision of the first and second notches 114 and 124 on the first and second ribs 113 and 123, respectively, restricts the installation position of the connecting shaft 31. The connecting arm 32 and the roller brush connecting portion 33 rotate about the connecting shaft 31, reducing the friction experienced by the floor brush assembly during vacuuming. Compared to conventional designs in which the connecting assembly 3 and the floor brush assembly remain relatively fixed, the structure of the connecting assembly 3 in this embodiment reduces friction between the connecting assembly 3 and the roller brush assembly 2, extending the service life of the connecting assembly 3 and reducing noise during operation of the floor brush assembly.

[0069] In one possible implementation, the vertical width of the connecting arm 32 is less than the sum of the depths of the first notch 114 and the second notch 124. That is, there is a gap between the two sides of the connecting arm 32 and the bottom of the first notch 114 or the bottom of the second notch 124. This allows the connecting arm 32 to rotate around the connecting shaft 31 when the roller brush connecting portion 33 moves with the roller brush assembly 2. If the connecting arm 32 is stuck in the first notch 114 or the second notch 124, leaving no room for rotation, the roller brush connecting portion 33 will also be unable to rotate. If the roller brush connecting portion 33 and the roller brush assembly 2 are forced to move, the connecting arm 32 will be deformed by the force.

[0070] In one possible implementation, Figure 1 、 11As shown in Figure 13, the floor brush assembly also includes a tooth comb assembly 4, which is arranged between the first shell 11 and the second shell 12; the roller brush assembly 2 includes a cleaning body 21 and bristles 22 provided on the cleaning body 21; the tooth comb assembly 4 extends into the cleaning cavity 13, with the end of the tooth comb assembly 4 facing the cleaning body 21, and part of the tooth comb assembly 4 extends into the bristles 22. The tooth comb assembly 4 is arranged to interfere with the bristles 22 on the cleaning body 21, forming an action similar to combing hair with a comb, so that the hair entangled on the cleaning body 21 and the bristles 22, which is difficult to be sucked away by suction, is combed onto the tooth comb assembly 4 and then sucked in by the suction of the vacuum cleaner itself, so as to achieve the purpose of removing hair from the cleaning body 21 and the bristles 22.

[0071] In one possible implementation, Figure 8 、 11 As shown in Figure 12, the bottom end of the second housing 12 is provided with multiple pressure plates 125. These pressure plates 125 are higher than and connected to the bottom end of the second housing 12. The second housing 12 is provided with multiple air inlets 126, each corresponding to one of the pressure plates 125. The air inlets 126 are located at the front end of the pressure plates 125. The air inlets 126 are located at the front end of the pressure plates 125, which are located at the bottom end of the second housing 12. In this embodiment, the front end is in the direction of travel of the vacuum cleaner during operation. The air inlets 126 are located at the front end of the second housing 12, allowing the vacuum cleaner to vacuum dust and hair in the direction of travel when the vacuum cleaner is in operation. The pressure plates 125 are primarily provided to hold down high-pile, high-resistance carpet during vacuuming, thereby reducing the density of the carpet's hair and preventing it from blocking the entire air inlet, allowing the floor brush assembly to function properly. The air inlet 126 and the pressure plate 125 work in coordination. In the present application, there is no limitation on the number and size of the openings of the air inlet 126 .

[0072] In one possible implementation, Figure 8-9 As shown in Figures 11-12, an opening 127 is provided on the second housing 12, which can expose the roller brush assembly 2. The opening 127 is connected to the cleaning chamber 13 to form a main air duct; the air inlet 126 is connected to the cleaning chamber 13 to form an auxiliary air duct. When the vacuum cleaner is working, the negative pressure source generates a pressure difference, and most of the air mixed with dust is sucked into the opening 127, and then passes through the cleaning chamber 13 and the impeller 52 and is then sucked into the negative pressure source. Here, the opening 127 and the cleaning chamber 13 are connected to form a main air duct, and a small amount of air mixed with dust is sucked into the air inlet 126, and then passes through the cleaning chamber 13 to flow to the impeller 52 and is then sucked into the negative pressure source. Here, the air inlet 126 and the cleaning chamber 13 are connected to form an auxiliary air duct.

[0073] In one possible implementation, Figure 2-5As shown, a pressure relief hole 118 is provided on the first housing 11, and a pressure relief valve 115 is installed on the pressure relief hole 118. When the pressure relief valve 115 is opened, the pressure relief valve 115 exposes the pressure relief hole 118, so that the pressure relief hole 118 is in fluid communication with the cleaning chamber 13; when the pressure relief valve 115 is closed, the pressure relief valve 115 covers the pressure relief hole 118. When the vacuum cleaner is cleaning a high-hair, high-resistance carpet, the opening 127 and the air inlet 126 are clogged with hair, causing the impeller 52 and the roller brush assembly 2 to stop rotating. At this time, the pressure relief valve 115 is opened to connect one end of the pressure relief hole 118 to the atmosphere, and the other end of the pressure relief hole 118 is connected to the cleaning chamber 13 to form a pressure relief channel. The dust-laden air is sucked into the pressure relief hole 118, passes through the cleaning chamber 13 and the impeller 52, and is then sucked into the negative pressure source, causing the impeller 52 and the roller brush assembly 2 to rotate again, and the vacuum cleaner resumes normal operation. The pressure relief valve 115 can be provided on the outer wall of the first housing 11. The first housing 11 and the second housing 12 are arranged relative to each other in the up-down direction. The first housing 11 is provided on the upper part of the second housing 12. In the present application, the up-down direction is the same as the up-down direction of the vacuum cleaner when the vacuum cleaner is working. The pressure relief valve 115 is provided at the top of the first housing 11 and is provided through the first housing 11. The pressure relief valve 115 is connected to the cleaning chamber 13. When the vacuum cleaner is vacuuming, when the air inlet 126 is blocked, there is no air circulation in the cleaning chamber 13, making it impossible for the roller brush assembly 2 to rotate. At this time, the pressure relief valve 115 can be slid to connect the cleaning chamber 13 with the air through the pressure relief valve 115, so that the roller brush assembly 2 can rotate again, ensuring the normal operation of the vacuum cleaner. There are two usage scenarios of the pressure relief valve 115. One is that the cleaning environment changes suddenly. When there is no air circulation in the cleaning chamber 13, the roller brush assembly 2 does not rotate, and the floor brush assembly is adsorbed on the carpet like a suction cup and cannot move, the pressure relief valve 115 can be opened to connect the cleaning chamber 13 with the air; another way is to open the pressure relief valve 115 before the vacuum cleaner vacuums the high-hair and high-resistance carpet to allow the cleaning chamber 13 to circulate with the air to ensure the normal operation of the roller brush assembly 2.

[0074] In one possible implementation, Figure 2-5 As shown, the first housing 11 includes a first fixed housing cover 116 and a first detachable housing cover 117. The first fixed housing cover 116 is provided with a slide button 1161. The slide button 1161 can be slid to separate the first detachable housing cover 117 from the first fixed housing cover 116. The first fixed housing cover 116 is fixedly connected to the second housing 12, and the first detachable housing cover 117 and the first fixed housing cover 116 are detachably connected. When the roller brush assembly 2 malfunctions due to hair being entangled, or when the roller brush assembly 2 is affected by too much hair and dust adhering to the roller brush assembly 2 during vacuuming, the button 1161 provided on the first fixed housing cover 116 can be slid to separate the first detachable housing cover 117 to better operate the roller brush assembly 2 and the cleaning chamber 13.

[0075] In one possible implementation, Figure 11-14 As shown, the floor brush assembly also includes an impeller assembly 5 and a rotating assembly 6. The impeller assembly 5 drives the rotating assembly 6 to rotate the roller brush assembly 2. When the vacuum cleaner is operating, the negative pressure source generates a pressure difference, generating a high-speed fluid flowing from the cleaning chamber 13 to the negative pressure source. The high-speed fluid passes through the impeller 52, driving the impeller 52 to rotate. The rotation of the impeller 52 in turn drives the roller brush assembly 2 to rotate, forming a negative pressure in the cleaning chamber 13. Hair or dust on the surface to be cleaned is sucked into the cleaning chamber 13 and eventually enters the dust box. In order to improve the dust collection effect of the vacuum cleaner, a roller brush assembly 2 is provided in the cleaning chamber 13. The roller brush assembly 2 in this embodiment does not use a roller brush motor to drive the roller brush assembly 2 to rotate. Instead, the rotating impeller assembly 5 drives the rotating assembly 6, thereby driving the rotation of the roller brush assembly 2. That is, whether the roller brush assembly 2 rotates depends on whether the impeller assembly 5 rotates. If the cleaning chamber 13 is not connected to the air, the impeller assembly 5 will stop rotating, causing the roller brush assembly 2 to also stop rotating.

[0076] In one possible implementation, Figure 16-17 As shown, the impeller assembly 5 includes an impeller housing 51 and an impeller 52 disposed within the impeller housing 51, an impeller shaft 53, and an impeller bracket 54. The impeller 52 is sleeved on the impeller shaft 53, and the impeller bracket 54 is disposed at both ends of the impeller shaft 53. The negative pressure source of the vacuum cleaner generates a pressure difference, generating a high-speed fluid flowing from the cleaning chamber 13 to the negative pressure source. The high-speed fluid passes through the impeller 52, driving the impeller 52 and the impeller shaft 53 to rotate. The impeller bracket 54 remains stationary relative to 12. In one possible implementation, there is at least one impeller 52. In this embodiment, two impellers 52 are provided. A rotating ball 55 is disposed within the impeller bracket 54. Both ends of the impeller shaft 53 pass through the rotating ball 55 and rotate relative to the rotating ball 55. The rotating ball 55 acts like a bearing. The impeller shaft 53 can rotate in the rotating ball 55. The rotating ball 55 is always fixed in the impeller bracket 54. The impeller bracket 54 is made of elastic material. When the impeller shaft 53 rotates, the rotating ball 55 made of elastic material can absorb part of the rotational force.

[0077] In one possible implementation, Figure 16-17 As shown, the impeller housing 51 is rotatable about a rotation axis 56, which is arranged parallel to the impeller shaft 53. During operation, the user can rotate the impeller housing 51 about the rotation axis 56 according to the vacuum cleaner's needs. The rotation axis 56 is parallel to the impeller shaft 53. Furthermore, the rotation axis 51 can coincide with the impeller shaft 53. The impeller housing 51 is generally cylindrical and houses the impeller 52. The cylindrical shape also helps prevent air leakage in the air duct during rotation.

[0078] In one possible implementation, Figure 3 、 5As shown in Figures 14 and 14, a disassembly cover 128 is provided on the second housing 12. The disassembly cover 128 is located at the bottom end of the impeller housing 51 and is detachable from the second housing 12. The impeller housing 51 is disposed between the first housing 11 and the second housing 12. The disassembly cover 128 allows the impeller 52 to be removed and cleaned when it becomes stuck with large particles and cannot rotate. In one possible implementation, the impeller housing 51 includes a first housing portion and a second housing portion. The first housing portion is connected to the first housing 11, and the second housing portion is connected to the second housing 12. The first housing portion and the first housing 11 are integrally formed, and the second housing portion and the second housing 12 are integrally formed.

[0079] In one possible implementation, Figure 11-14 As shown, the rotating assembly 6 includes a first pulley 61, a second pulley 62 and a belt 63. The first pulley 61 is sleeved on the rotating shaft of the cleaning body 21, the second pulley 62 is sleeved on the impeller shaft 53, and the belt 63 is tensioned between the first pulley 61 and the second pulley 62. The belt 63 is sleeved between the first pulley 61 and the second pulley 62. When the impeller shaft 53 rotates, the second pulley 62 is driven to rotate, and the belt 63 is driven to rotate through the second pulley 62, thereby driving the first pulley 61 to rotate, and then driving the cleaning body 21 to rotate.

[0080] In one possible implementation, Figure 18 and 19 As shown, the axis of the connecting shaft 31 is set between the axis of the impeller shaft 53 and the axis of the roller brush assembly 2. Theoretically, the closer the axis of the connecting shaft 31 is to the axis of the impeller shaft 53, the more stable the force on the belt 63 will be when the roller brush assembly 2 floats. However, due to space limitations, the closer the connecting shaft 31 is to the axis of the roller brush assembly 2, the more compact the structure will be and the smaller the size of the floor brush assembly will be. Therefore, the axis of the connecting shaft 31 is set between the axis of the impeller shaft 53 and the axis of the roller brush assembly 2. Since the roller brush assembly 2 floats in the initial position and is affected by large particles on the surface to be cleaned and moves upward, the axis of the connecting shaft 31 is set above the line connecting the axis of the impeller shaft 53 and the axis of the roller brush assembly 2, so that the motion trajectory of the roller brush assembly 2 and the motion trajectory of the connecting arm 32 of the connecting assembly 3 can be more closely matched. Further, as Figure 19 As shown, in the left-right direction of the floor brush assembly, the axis of the connecting shaft 31 is projected on the midline of the line connecting the axis of the impeller shaft 53 and the axis of the roller brush assembly 2. Furthermore, the distance between the axis of the connecting shaft 31 and the line is 3-10 mm. Furthermore, by setting the impeller bracket 54 to be elastic, the axis of the impeller shaft 53 can be adjusted as the roller brush assembly 2 floats, thereby making the belt 63 transmission more stable.

[0081] This embodiment also provides a vacuum cleaner, including the floor brush assembly described in the above embodiment, and the vacuum cleaner includes a drive motor, which can drive the impeller assembly 5 to rotate, and the impeller assembly 5 drives the rotating assembly 6 to rotate, and then drives the roller brush assembly 2 to rotate. When the vacuum cleaner is vacuuming, the roller brush assembly 2 rotates. When the vacuum cleaner is vacuuming on an uneven surface to be cleaned, the roller brush assembly 2 will change the gap between it and the surface to be cleaned under the action of gravity, thereby achieving specific cleaning of different surfaces to be cleaned. A rotatable connecting assembly 3 is provided. The rotatable connecting assembly 3 in this application means that the connecting assembly 3 can rotate within a certain range. The purpose is to allow the position of the roller brush assembly 2 relative to the floor brush housing 1 to be changed, so that the friction force on the connecting assembly 3 can be reduced, and the life of the floor brush housing 1 can also be extended.

[0082] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A floor brush assembly, characterized in that: include: Floor brush housing (1); A roller brush assembly (2) is arranged in the floor brush housing (1) and connected to the floor brush housing (1) via a connecting assembly (3); The connecting assembly (3) is provided at both ends of the roller brush assembly (2), and comprises a connecting shaft (31), a connecting arm (32) and a roller brush connecting portion (33); the two ends of the connecting arm (32) are respectively connected to the connecting shaft (31) and the roller brush connecting portion (33); the connecting shaft (31) is installed in the floor brush housing (1); and the roller brush connecting portion (33) is connected to the roller brush assembly (2); The connecting arm (32) and the roller brush connecting portion (33) can drive the roller brush assembly (2) to rotate around the connecting shaft (31) within a certain range, so that the roller brush assembly (2) can adjust the relative position of the roller brush assembly (2) in the floor brush housing (1) according to different surfaces to be cleaned; The floor brush assembly further comprises an impeller assembly (5) and a rotating assembly (6), wherein the impeller assembly (5) drives the rotating assembly (6) to drive the roller brush assembly (2) to rotate.

2. The floor brush assembly according to claim 1, characterized in that: The floor brush housing (1) comprises a first shell (11) and a second shell (12) arranged opposite to each other in an up-down direction, a cleaning cavity (13) is defined between the first shell (11) and the second shell (12), and the roller brush assembly (2) is installed in the cleaning cavity (13).

3. The floor brush assembly according to claim 2, characterized in that: A first protrusion (111) is provided on the inner wall of the first shell (11), and a second protrusion (121) is provided on the inner wall of the second shell (12); when the first shell (11) and the second shell (12) are covered, the first protrusion (111) and the second protrusion (121) are connected; The end portion of the first protrusion (111) connected to the second protrusion (121) is provided with a first groove (112), and the end portion of the second protrusion (121) connected to the first protrusion (111) is provided with a second groove (122), and the connecting shaft (31) is installed in a mounting hole formed by the first groove (112) and the second groove (122).

4. The floor brush assembly according to claim 3, characterized in that: The sizes of the first groove (112) and the second groove (122) are adapted to the sizes of the connecting shaft (31).

5. The floor brush assembly according to claim 3, characterized in that: A first convex rib (113) is provided on the inner wall of the first shell (11), and a first notch (114) is provided on the first convex rib (113); a second convex rib (123) is provided on the inner wall of the second shell (12), and a second notch (124) is provided on the second convex rib (123); when the first shell (11) and the second shell (12) are covered, the first convex rib (113) and the second convex rib (123) are connected, and the connecting arm (32) is installed in the first notch (114) and the second notch (124).

6. The floor brush assembly according to claim 5, characterized in that: The arm width of the connecting arm (32) in the up-down direction is smaller than the sum of the depths of the first notch (114) and the second notch (124).

7. The floor brush assembly according to claim 2, characterized in that: The floor brush assembly further comprises a tooth comb assembly (4), wherein the tooth comb assembly (4) is arranged between the first housing (11) and the second housing (12); the roller brush assembly (2) comprises a cleaning body (21) and bristles (22) arranged on the cleaning body (21); The tooth comb assembly (4) extends into the cleaning chamber (13), the end of the tooth comb assembly (4) is arranged toward the cleaning body (21), and part of the tooth comb assembly (4) extends into the bristles (22).

8. The floor brush assembly according to claim 7, characterized in that: A plurality of pressure plates (125) are provided on the bottom end of the second shell (12), wherein the pressure plates (125) are higher than the bottom end of the second shell (12) and are connected to the bottom end of the second shell (12); The second housing (12) is provided with a plurality of air inlets (126), the air inlets (126) corresponding one to one with the pressing plate (125), and the air inlets (126) are located at the front end of the pressing plate (125).

9. The floor brush assembly according to claim 8, characterized in that: The second housing (12) is provided with an opening (127), the opening (127) being capable of exposing the roller brush assembly (2), the opening (127) being in communication with the cleaning cavity (13) to form a main air duct; and the air inlet (126) being in communication with the cleaning cavity (13) to form an auxiliary air duct.

10. The floor brush assembly according to claim 9, characterized in that: The first housing (11) is provided with a pressure relief hole (118), and a pressure relief valve (115) is installed on the pressure relief hole (118). When the pressure relief valve (115) is opened, the pressure relief valve (115) exposes the pressure relief hole (118) so that the pressure relief hole (118) is in fluid communication with the cleaning chamber (13); when the pressure relief valve (115) is closed, the pressure relief valve (115) covers the pressure relief hole (118). Preferably, the first housing (11) comprises a first fixed housing cover (116) and a first detachable housing cover (117); the first fixed housing cover (116) is provided with a button (1161); the button (1161) is slid to separate the first detachable housing cover (117) from the first fixed housing cover (116). Preferably, the impeller assembly (5) comprises an impeller housing (51), an impeller (52) arranged in the impeller housing (51), an impeller shaft (53) and an impeller bracket (54), the impeller (52) being sleeved on the impeller shaft (53), and the impeller bracket (54) being arranged at both ends of the impeller shaft (53); A rotating ball (55) is provided in the impeller bracket (54), and both ends of the impeller shaft (53) are provided in the rotating ball (55) and rotate relative to the rotating ball (55). Preferably, the impeller housing (51) is rotatable around a rotation axis (56), and the rotation axis (56) is arranged parallel to the impeller shaft (53). Preferably, a disassembly cover plate (128) is provided on the second housing (12), and the disassembly cover plate (128) is located at the bottom end of the impeller housing (51) and is detachable relative to the second housing (12). Preferably, the rotating assembly (6) comprises a first pulley (61), a second pulley (62) and a belt (63), wherein the first pulley (61) is sleeved on the rotating shaft of the cleaning body (21), the second pulley (62) is sleeved on the impeller shaft (53), and the belt (63) is tensioned between the first pulley (61) and the second pulley (62). Preferably, the axis of the connecting shaft (31) is arranged between the axis of the impeller shaft (53) and the axis of the roller brush assembly (2). Preferably, it comprises a floor brush assembly as described in any one of claims 1-10.

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