Rolling brush, rolling brush mechanism and cleaning equipment

Abstract

The invention discloses a rolling brush, a rolling brush mechanism and cleaning equipment. The rolling brush comprises a brush shaft with a cavity, a brushing and sweeping assembly, a transmission assembly and a cutting assembly. The brushing and sweeping assembly is arranged on the peripheral wall of the brush shaft, and the brushing and sweeping assembly can guide swept garbage to the middle area of the brush shaft from the two ends of the brush shaft; at least part of the transmission assembly is located in the cavity, the cutting assembly is arranged in the middle area of the brush shaft and comprises a cutter tooth piece and a cutter holder piece, and the cutter holder piece is fixedly connected with the brush shaft. When the brush shaft rotates, the cutter tooth piece can be driven by the transmission assembly to do reciprocating motion relative to the cutter holder piece in the axial direction of the brush shaft so as to form cutting motion. The structural arrangement of the rolling brush can relieve or solve the problem that the cleaning efficiency of the rolling brush is reduced due to the fact that hair foreign matter winds the rolling brush.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a roller brush, a roller brush mechanism and a cleaning equipment. Background Art

[0002] Cleaning equipment such as sweepers are equipped with roller brushes, which clean the ground by rotating the roller brushes. During the cleaning process, longer dirty foreign objects such as hair are drawn into the roller brushes and entangled on the roller brushes. The accumulation of these objects becomes difficult to handle, resulting in reduced cleaning efficiency, which in turn affects the normal operation of the sweeper. Summary of the invention

[0003] The purpose of the present application is to provide a roller brush, a roller brush mechanism and a cleaning device, the structural arrangement of which can alleviate or solve the problem of reduced cleaning efficiency caused by hair and other dirty foreign objects entangled in the roller brush.

[0004] In order to solve the above technical problems, the present application provides a roller brush, including a brush shaft with a cavity, a brush sweeping assembly, a transmission assembly and a cutting assembly;

[0005] The brush sweeping assembly is arranged on the outer peripheral wall of the brush shaft, and the brush sweeping assembly can guide the cleaned garbage from the two ends of the brush shaft to the middle area of ​​the brush shaft;

[0006] At least part of the transmission assembly is located in the cavity, the cutting assembly is arranged in the middle area of ​​the brush shaft, the cutting assembly includes a cutter tooth part and a cutter seat part, the cutter seat part is fixedly connected to the brush shaft, and when the brush shaft rotates, the cutter tooth part can be driven by the transmission assembly to reciprocate along the axial direction of the brush shaft relative to the cutter seat part to form a cutting motion.

[0007] In an achievable solution, the transmission assembly includes a transmission shaft, a gear assembly and a reciprocating member, one end of the transmission shaft extends into the cavity of the brush shaft, the other end of the transmission shaft is connected to the brush shaft through the gear assembly, the reciprocating member is located in the cavity and is sleeved on the transmission shaft, when the brush shaft rotates, it can drive the transmission shaft to rotate to drive the reciprocating member to move back and forth along the transmission shaft, and the knife tooth member is fixedly connected to the reciprocating member.

[0008] In a feasible solution, the outer peripheral wall of the transmission shaft is provided with a convex portion protruding radially outward, and the inner wall of the reciprocating member is provided with a spiral slideway toward the transmission shaft, and at least part of the convex portion is located on the slideway.

[0009] In a feasible solution, the gear assembly is a differential gear assembly, and there is a speed difference between the rotational speed of the transmission shaft and the rotational speed of the brush shaft.

[0010] In one feasible solution, the differential gear assembly includes an input gear, a duplex gear and an output gear, the input gear is fixedly sleeved on the brush shaft, the output gear is fixedly sleeved on the transmission shaft, the input gear is meshed with the first gear portion of the duplex gear, and the output gear is meshed with the second gear portion of the duplex gear.

[0011] In a feasible solution, the gear assembly is located outside the brush shaft.

[0012] In a feasible solution, a knife-tooth strip is fixedly connected in the cavity of the brush shaft, and the knife-tooth strip can apply pre-pressure to the knife-tooth member to make the knife-tooth member fit with the knife seat member.

[0013] In a feasible solution, a counterweight is disposed in the cavity of the brush shaft, and in the radial direction of the brush shaft, the counterweight and the cutting assembly are located on both sides of the transmission assembly.

[0014] In a feasible solution, the roller brush is provided with more than two brush sweeping assemblies, and each of the brush sweeping assemblies is arranged along the circumference of the brush shaft; the brush sweeping assembly includes a first brush sweeping portion and a second brush sweeping portion, the first brush sweeping portion spirally extends from one end of the brush shaft to the middle area, and the second brush sweeping portion spirally extends from the other end of the brush shaft to the middle area, and the rotation direction of the first brush sweeping portion is opposite to that of the second brush sweeping portion.

[0015] In a feasible solution, the first brush sweeping part and the second brush sweeping part both include a brush and a scraper bar, the height of the scraper bar is lower than the height of the brush, and / or the inclination angle of the brush relative to the axial direction of the brush shaft is 40-60°.

[0016] The present application also provides a roller brush mechanism, comprising an outer shell and a roller brush, wherein the roller brush is rotatably mounted on the outer shell, and the roller brush is any of the roller brushes described above.

[0017] In a feasible solution, the roller brush mechanism includes an air duct connector, the air duct connector is connected to the outer shell, and the position of the air duct connector corresponds to the middle area of ​​the roller brush.

[0018] In a feasible solution, the roller brush mechanism further includes a driving component, and the driving component is used to drive the brush shaft to rotate.

[0019] The present application also provides a cleaning device, comprising the roller brush described in any one of the above items, or comprising the roller brush mechanism described in any one of the above items.

[0020] In the cleaning equipment, roller brush mechanism and roller brush provided in the implementation scheme of the present application, the brush sweeping assembly of the roller brush can rotate with the brush shaft and gather the cleaned garbage in the middle area of ​​the brush shaft. Dirt and foreign matter with entanglement characteristics such as hair in the garbage can be cut by the cutting assembly arranged in the middle area of ​​the brush shaft, and the cut dirt and debris can be directly sucked away. When the brush shaft rotates, the transmission assembly drives the blade teeth of the cutting assembly to move back and forth relative to the blade seat to realize the cutting action; the roller brush can effectively alleviate or solve the problem of dirty foreign matter entangled in the roller brush and causing the roller brush to be blocked during cleaning, which can improve the cleaning efficiency, help reduce the power consumption of the cleaning equipment, and also help ensure the cleaning effect. At the same time, because the roller brush structure can effectively prevent the entanglement of dirty foreign matter, the user can avoid manually cleaning the roller brush in the application, or reduce the frequency of manual cleaning of the roller brush by the user, and the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a roller brush mechanism in an embodiment provided in the present application;

[0022] Figure 2 for Figure 1 A cross-sectional view of the roller brush mechanism shown;

[0023] Figure 3 for Figure 1 An exploded view of the roller brush mechanism shown;

[0024] Figure 4 for Figure 1 A schematic diagram of the structure of the middle roller brush;

[0025] Figure 5 for Figure 4 Longitudinal section of the roller brush shown Figure 1 ;

[0026] Figure 6 for Figure 4 Longitudinal section of the roller brush shown Figure 2 ;

[0027] Figure 7 for Figure 4 A partial structural diagram of the interior of the brush shaft of the roller brush shown;

[0028] Figure 8 for Figure 3 A structural diagram of the first piece of the reciprocating member;

[0029] Fig. 9 for Figure 3 A structural diagram of the second piece of the reciprocating member;

[0030] Fig.10 for Figure 4 A partial structural diagram of the roller brush shown;

[0031] Fig.11 for Figure 4 A transverse cross-sectional view of the roller brush shown.

[0032] Description of reference numerals:

[0033] Roller brush mechanism 100;

[0034] Roller brush 10, outer shell 20, air duct connector 30, driving component 40;

[0035] Brush shaft 11, first shaft housing 111, second shaft housing 112, cavity 113, baffle 114;

[0036] The brush sweeping assembly 12 includes a first brush sweeping portion 12A, a second brush sweeping portion 12B, a brush 121, and a scraping strip 122;

[0037] Transmission assembly 13, transmission shaft 131, convex part 1311, gear assembly 132, input gear 1321, double gear 1322, first gear part 13221, second gear part 13222, output gear 1323, reciprocating member 133, slideway 1331, first block 1332, positioning column 13321, second block 1333, positioning hole 13331, mounting member 134;

[0038] Cutting assembly 14, blade tooth member 141, blade support member 142;

[0039] The blade strip 15, the counterweight 16, the power input shaft 17, and the bearing 18;

[0040] A first shell 21 and a second shell 22 . DETAILED DESCRIPTION

[0041] The terms "first", "second", etc. mentioned herein are only for the convenience of description and are used to distinguish one component with the same name from another, and do not indicate that there is a causal relationship or a primary-secondary relationship between these components.

[0042] For ease of understanding and concise description, the cleaning device and its roller brush mechanism and roller brush are explained together below, and the beneficial effects will not be repeated.

[0043] The embodiment of the present application provides a cleaning device, a roller brush mechanism and a roller brush, wherein the roller brush mechanism includes a roller brush and a driving component, and when the cleaning device is in operation, the driving component can drive the roller brush to rotate to achieve a cleaning operation on the ground and other areas. The cleaning device can be a handheld sweeper, a robot sweeper, or a sweeping and mopping cleaning robot, etc. The cleaning device can be used in household scenarios or commercial scenarios.

[0044] The implementation scheme of the present application focuses on improving the roller brush mechanism and the structure of the roller brush of the cleaning equipment, which can effectively prevent long dirty foreign objects such as hair from entangled in the roller brush and cause the roller brush to block, which is beneficial to reducing the power consumption of the cleaning equipment and ensuring the cleaning effect.

[0045] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] Please refer to Figures 1 to 4 , Figure 1 A schematic structural diagram of a roller brush mechanism in an embodiment provided in the present application; Figure 2 for Figure 1 A cross-sectional view of the roller brush mechanism shown; Figure 3 for Figure 1 An exploded view of the roller brush mechanism shown; Figure 4 for Figure 1 Schematic diagram of the structure of the middle roller brush.

[0047] In this embodiment, the roller brush mechanism 100 includes a roller brush 10 and an outer shell 20, and the roller brush 10 is rotatably mounted on the outer shell 20. The outer shell 20 has an accommodating space for accommodating the roller brush 10. To achieve cleaning, the cleaning structure of the roller brush 10 can extend out of the outer shell 20.

[0048] In one implementation, the outer shell 20 includes a first shell 21 and a second shell 22, which are detachably connected to facilitate assembly with the roller brush 10. Part of the accommodating space for accommodating the roller brush 10 can be formed in the first shell 21, and part of it can be formed in the second shell 22. A through opening can be provided on the second shell 22, so that when the roller brush 10 rotates, part of the cleaning structure of the roller brush 10 can extend from the through opening of the second shell 22 to clean the garbage in the area to be cleaned.

[0049] Exemplarily, the first shell 21 and the second shell 22 can be detachably connected by snapping together. The snapping structure can be a buckle and a buckle hole. One of the buckle and the buckle hole can be provided on the first shell 21, and the other can be provided on the second shell 22.

[0050] The roller brush mechanism 100 further includes a driving component 40, which is used to drive the roller brush 10 to rotate to achieve cleaning.

[0051] In this embodiment, the roller brush 10 includes a brush shaft 11 , a brush sweeping assembly 12 , a transmission assembly 13 and a cutting assembly 14 .

[0052] The axial direction of the brush shaft 11 is the axial direction of the roller brush 10 . After the roller brush 10 is installed in the outer shell 20 , the brush shaft 11 can rotate around its own axis under the drive of the driving component 40 .

[0053] The brush sweeping assembly 12 is disposed on the outer peripheral wall of the brush shaft 11, and the brush sweeping assembly 12 can guide the cleaned garbage from the two ends of the brush shaft 11 to the middle area of ​​the brush shaft 11. Here, the two ends and the middle area of ​​the brush shaft 11 are based on the axial direction of the brush shaft 11. Figure 4 In terms of the orientation shown, the axial direction of the brush shaft 11 is the left-right direction in the figure.

[0054] The cleaning structure of the roller brush 10 includes a brush sweeping assembly 12. When the brush shaft 11 rotates, the brush sweeping assembly 12 is driven to rotate together to achieve cleaning.

[0055] In this embodiment, the brush shaft 11 has a cavity 113, in other words, the brush shaft 11 is a hollow structure. At least part of the transmission assembly 13 is located in the cavity 113 of the brush shaft 11. The cutting assembly 14 is arranged in the middle area of ​​the brush shaft 11, and the cutting assembly 14 includes a blade member 141 and a blade seat member 142, wherein the blade seat member 142 is fixedly connected to the brush shaft 11, and when the brush shaft 11 rotates, the transmission assembly 13 can drive the blade member 141 to reciprocate relative to the blade seat member 142 along the axial direction of the brush shaft 11 to form a cutting motion.

[0056] In one embodiment, the roller brush mechanism 100 includes an air duct connector 30, which is connected to the outer shell 20, and the position of the air duct connector 30 corresponds to the middle area of ​​the roller brush 10. In this way, the cleaning device can suck away the garbage cleaned by the roller brush 10 through the air duct connector 30.

[0057] In the illustrated example, the air duct connector 30 is connected to the first shell 21 , and the first shell 21 has an air intake port in the middle area corresponding to the roller brush 10 , and the air intake port is connected to the air duct of the cleaning device through the air duct connector 30 .

[0058] After the cleaning equipment adopts the above-mentioned roller brush 10 and roller brush mechanism 100, during cleaning, the driving component 40 drives the brush shaft 11 of the roller brush 10 to rotate, and cleaning is achieved through the brush sweeping assembly 12 that rotates synchronously with the brush shaft 11. The brush sweeping assembly 12 can guide the cleaned garbage to the middle area of ​​the roller brush 10. The cleaned garbage may contain longer dirty foreign objects such as hair, which are easy to be entangled. Other dirty foreign objects that do not have the entanglement characteristic will be sucked away through the air intake port, and the dirty foreign objects with the entanglement characteristic will gradually gather in the middle area of ​​the roller brush 10. When the brush shaft 11 rotates, it will drive the blade tooth part 141 to move back and forth axially relative to the blade seat part 142 through the transmission assembly. The dirty foreign objects with the entanglement characteristic gathered in the middle area will be cut off by the blade tooth part 141 and the blade seat part 142, and the cut dirty foreign objects can be easily sucked away by the cleaning equipment from the air intake port. In summary, when the cleaning device is cleaning, the cleaned garbage is gathered in the middle area of ​​the roller brush 10, among which the dirty foreign objects with entanglement characteristics are cut by the cutting component 14 and then sucked away, while other dirty foreign objects without entanglement characteristics are directly sucked away.

[0059] The structural design of the roller brush 10 provided in this embodiment provides technical support for preventing hair and other long dirty foreign objects from being entangled in the roller brush 10. The structural design of the roller brush 10, in conjunction with the reciprocating cutting assembly 14, can effectively alleviate or solve the problem of dirty foreign objects entangled in the roller brush 10 and causing the roller brush 10 to be blocked during cleaning, which is beneficial to reducing the power consumption of the cleaning equipment and ensuring the cleaning effect. At the same time, because the structure of the roller brush 10 can effectively prevent dirty foreign objects from being entangled, the user can avoid manually cleaning the roller brush in the application, or reduce the frequency of manual cleaning of the roller brush by the user, and the user experience is better.

[0060] Please refer to Figures 5 to 10 , Figure 5 for Figure 4 Longitudinal section of the roller brush shown Figure 1 ; Figure 6 for Figure 4 Longitudinal section of the roller brush shown Figure 2 ; Figure 7 for Figure 4 A partial structural diagram of the interior of the brush shaft of the roller brush shown; Figure 8 for Figure 3 A structural diagram of the first piece of the reciprocating member; Fig. 9 for Figure 3 A structural diagram of the second piece of the reciprocating member; Fig.10 for Figure 4 A partial structural diagram of the roller brush shown.

[0061] In this embodiment, the transmission assembly 13 includes a transmission shaft 131, a gear assembly 132 and a reciprocating member 133, wherein one end of the transmission shaft 131 extends into the cavity 113 of the brush shaft 11, and the other end of the transmission shaft 131 is connected to the brush shaft 11 through the gear assembly 132. The reciprocating member 133 is located in the cavity 113 and is sleeved on the transmission shaft 131. When the brush shaft 11 rotates, it can drive the transmission shaft 131 to rotate to drive the reciprocating member 133 to reciprocate along the transmission shaft 131; the toothed member 141 of the cutting assembly 14 is fixedly connected to the reciprocating member 133.

[0062] In other words, the reciprocating member 133 is slidably mounted on the transmission shaft 131. When the transmission shaft 131 is driven by the brush shaft 11 to rotate, the reciprocating member 133 can be driven to reciprocate along the transmission shaft 131, thereby driving the blade member 141 to reciprocate together, and forming a cutting motion between the blade member 141 and the blade seat member 142. The axial direction of the transmission shaft 131 is the same as the axial direction of the brush shaft 11.

[0063] With the above solution, at least part of the structure of the transmission assembly 13 is disposed in the cavity 113 of the brush shaft 11 , which has a high degree of integration and avoids occupying too much space, thereby facilitating reducing the volume of the roller brush mechanism 100 .

[0064] In a specific implementation, a matching convex portion 1311 and a slideway 1331 are provided between the transmission shaft 131 and the reciprocating member 133 , and the rotation of the transmission shaft 131 can be converted into an axial reciprocating movement of the reciprocating member 133 through the cooperation between the convex portion 1311 and the slideway 1331 .

[0065] like Figures 7 to 9 As shown, the outer peripheral wall of the transmission shaft 131 is provided with a convex portion 1311 protruding outward in the radial direction thereof, and the inner wall of the reciprocating member 133 facing the transmission shaft 131 is provided with a spiral slideway 1331, and at least a part of the convex portion 1311 is inserted into the slideway 1331. After such arrangement, when the transmission shaft 131 rotates, the convex portion 1311 rotates together therewith, and the convex portion 1311 cooperates with the slideway 1331 of the reciprocating member 133 during the rotation process, driving the reciprocating member 133 to reciprocate along the axial direction of the transmission shaft 131.

[0066] In a specific implementation, two baffles 114 may be provided in the cavity 113 of the brush shaft 11 to limit the reciprocating range of the reciprocating member 133. The two baffles 114 are arranged at intervals along the axis direction of the brush shaft 11, and the reciprocating member 133 is located between the two baffles 114, wherein the baffle 114 close to the gear assembly 132 can also play a supporting role for the transmission shaft 131, that is, the baffle 114 ( Figure 7 The baffle plate 114 near the right side in the middle has a hole or a slot for the transmission shaft 131 to rotatably pass through.

[0067] Of course, in practical applications, the reciprocating range of the reciprocating member 133 may also be limited by the spiral length of the slideway 1331 .

[0068] In a specific implementation, the reciprocating member 133 includes a first block 1332 and a second block 1333, which are detachably connected to each other, so as to facilitate the assembly of the reciprocating member 133 and the transmission shaft 131.

[0069] A partial slide 1331 may be provided on one side of the first block 1332 facing the second block 1333, and a partial slide 1331 may be provided on one side of the second block 1333 facing the first block 1332. After the first block 1332 and the second block 1333 are spliced ​​together, the partial slides of the two are spliced ​​together to form a complete slide 1331 that cooperates with the protrusion 1311.

[0070] Half-hole structures for cooperating with the transmission shaft 131 can also be respectively provided on the first block 1332 and the second block 1333. After the first block 1332 and the second block 1333 are spliced ​​together, a complete insertion hole is formed to slidably cooperate with the transmission shaft 131.

[0071] The first block 1332 and the second block 1333 can be detachably connected by means of snap connection or screw connection. In practical applications, the first block 1332 can be provided with a positioning column 13321, and the second block 1333 can be provided with a positioning hole 13331. The positioning column 13321 can be inserted into the positioning hole 13331 to achieve the positioning of the first block 1332 and the second block 1333, ensuring the reliability of the cooperation between the reciprocating member 133 and the transmission shaft 131. The number of mutually matching positioning columns 13321 and positioning holes 13331 can be set as needed, and is not limited to that shown in the figure.

[0072] In this embodiment, the gear assembly 132 of the transmission assembly 13 is a differential gear assembly, so that there is a speed difference between the speed of the transmission shaft 131 and the speed of the brush shaft 11. After this arrangement, the speed of the reciprocating member 133 in linear reciprocating motion can be adjusted, which facilitates the cutting operation of the cutting assembly 14.

[0073] In a specific implementation, the differential gear assembly can be set to make the rotation speed of the transmission shaft 131 lower than the rotation speed of the brush shaft 11, so that the reciprocating member 133 can perform linear reciprocating motion at a lower speed, thereby avoiding vibration noise and energy consumption caused by high-speed reciprocating motion.

[0074] In one implementation, the gear assembly 132 includes an input gear 1321, a duplex gear 1322 and an output gear 1323. The duplex gear 1322 includes a first gear portion 13221 and a second gear portion 13222 which are coaxially arranged; the input gear 1321 is fixedly sleeved on the brush shaft 11, and the output gear 1323 is fixedly sleeved on the transmission shaft 131. The input gear 1321 is meshed with the first gear portion 13221 of the duplex gear 1322, and the output gear 1323 is meshed with the second gear portion 13222 of the duplex gear 1322.

[0075] The gear assembly 132 has a simple structure and can reduce the space occupied by the gear assembly 132 on the basis of realizing differential transmission between the brush shaft 11 and the transmission shaft 131 .

[0076] In the specific setting, the number of teeth of the input gear 1321 is z1, the number of teeth of the output gear 1323 is z4, the number of teeth z2 of the first gear part 13221 of the double gear 1322 is less than the number of teeth z3 of the second gear part 13222 of the double gear 1322; the first gear part 13221 and the input gear 1321 form a transmission ratio i1=z2 / z1, and the second gear part 13222 and the output gear 1323 form a transmission ratio i2=z4 / z3. By setting the number of teeth of each gear, I=i2*i1 is less than 1; the rotation speed n of the brush shaft 11 is equal to the rotation speed of the input gear 1321, the output gear 1323 rotates in the same direction as the input gear 1321, and the rotation speed n2 of the output gear 1323 is n*I. Since I is less than 1, it can be achieved that the rotation speed of the output gear 1323 is less than the rotation speed of the input gear 1321, so that there is a speed difference between the brush shaft 11 and the transmission shaft 131 .

[0077] The blade tooth 141 is fixedly connected to the reciprocating member 133, and performs linear reciprocating motion with the reciprocating member 133, and forms a reciprocating cutting motion with the blade holder 142 fixed on the brush shaft 11. The transmission shaft 131 rotates one circle relative to the brush shaft 11, and the blade tooth 141 reciprocates m times. The reciprocating cutting frequency of the blade tooth 141 is .

[0078] In other implementations, the speed of the transmission shaft 131 can be higher than the speed of the brush shaft 11 by setting a differential gear assembly. The differential gear assembly can still adopt the above structure, and the speed of the transmission shaft 131 and the brush shaft 11 can be adjusted by changing the number of teeth of the relevant gears, which will not be described in detail.

[0079] In a specific implementation, the brush shaft 11 includes a first shaft housing 111 and a second shaft housing 112 , and the first shaft housing 111 and the second shaft housing 112 are separately provided, so that the assembly of the brush shaft 11 and the transmission assembly 13 is convenient.

[0080] The first shaft housing 111 and the second shaft housing 112 may be connected in a detachable manner such as a snap connection or a screw connection to facilitate inspection and maintenance.

[0081] In the illustrated example, the cutter seat member 142 of the cutting assembly 14 is fixedly connected to the first shaft housing 111 .

[0082] In actual configuration, the gear assembly 132 in the transmission assembly 13 is disposed at one end of the brush shaft 11, and is combined with Figures 4 to 6 as well as Fig.10As shown in the figure, the gear assembly 132 is arranged at the right end of the brush shaft 11, the right end of the transmission shaft 131 extends out of the brush shaft 11, the gear part of the input gear 1321 and the output gear 1323 are both located outside the brush shaft 11, and the right end of the transmission shaft 131 extending out of the brush shaft 11 can be rotatably supported on the outer housing 20 of the roller brush mechanism 100 through the bearing 18, and the double gear 1322 can be mounted through the mounting member 134 (indicated at Figure 3 The gear assembly 132 is mounted on the outer shell 20. It can be understood that the gear assembly 132 is located outside the brush shaft 11.

[0083] After being configured as above, the roller brush 10 utilizes the gear assembly 132 externally disposed on the brush shaft 11 to realize the reciprocating cutting motion of the cutting assembly 14. The output gear 1323 and the double gear 1322 are mainly supported by the non-rotating outer shell 20, which is beneficial to reduce the rotational shaking of the roller brush 10 and reduce the load of the driving component 40. In addition, the gear assembly 132 can be reused, which is beneficial to saving costs.

[0084] In a specific implementation, each gear in the gear assembly 132 can be a plastic gear to further reduce the weight of the roller brush 10 .

[0085] The end of the brush shaft 11 without the gear assembly 132 can be fixedly connected to the power input shaft 17, and the output shaft of the driving component 40 can be transmission-connected to the power input shaft 17, so that the brush shaft 11 and the brush sweeping assembly 12 installed on the brush shaft 11 can be driven to rotate together through the power input shaft 17.

[0086] Please refer to Fig.11 , Fig.11 for Figure 4 A transverse cross-sectional view of the roller brush shown.

[0087] In one implementation, a knife-toothed strip 15 may be fixedly connected to the cavity 113 of the brush shaft 11, and the knife-toothed strip 15 corresponds to the position of the knife-toothed member 141 fixed on the reciprocating member 133. The knife-toothed strip 15 can apply pre-pressure to the knife-toothed member 141, so that the knife-toothed member 141 fits with the knife seat member 142 fixed on the brush shaft 11. In this way, it can be ensured that when the knife-toothed member 141 reciprocates relative to the knife seat member 142, the two can fit closely, so as to ensure the cutting effect of hair and other easily entangled dirt and debris, so as to improve the cleaning effect.

[0088] In one implementation, a counterweight 16 is further disposed in the cavity 113 of the brush shaft 11, and in the radial direction of the brush shaft 11, the counterweight 16 and the cutting assembly 14 are located on both sides of the transmission assembly 13. In this way, the rotation balance of the roller brush 10 can be adjusted by the counterweight 16, and vibration and abnormal noise can be avoided when the roller brush 10 runs at a higher speed.

[0089] For example, the material density of the weight 16 may be higher than the material density of the brush shaft 11 .

[0090] Please refer to Figure 1 , Figure 3 and Figure 4 In this embodiment, the brush sweeping assembly 12 of the roller brush 10 includes a first brush sweeping portion 12A and a second brush sweeping portion 12B. The first brush sweeping portion 12A spirally extends from one end of the brush shaft 11 to the middle area of ​​the brush shaft 11, and the second brush sweeping portion 12B spirally extends from the other end of the brush shaft 11 to the middle area of ​​the brush shaft 11. The rotation direction of the first brush sweeping portion 12A is opposite to that of the second brush sweeping portion 12B.

[0091] After the brush sweeping assembly 12 is arranged as above, the first brush sweeping portion 12A and the second brush sweeping portion 12B can guide the cleaned garbage to the middle area when rotating.

[0092] In a specific implementation, the roller brush 10 may be provided with more than two brush sweeping assemblies 12, and each brush sweeping assemblies 12 is arranged along the circumferential direction of the brush shaft 11. This is conducive to improving the cleaning effect.

[0093] In a specific implementation, the inner end of the first brush sweeping portion 12A near the middle area and the inner end of the second brush sweeping portion 12B near the middle area are at the same position in the circumferential direction of the brush shaft 11, that is, the inner end of the first brush sweeping portion 12A and the inner end of the second brush sweeping portion 12B are adjacent to each other; the outer end of the first brush sweeping portion 12A (referring to the end away from the center of the brush shaft 11) and the outer end of the second brush sweeping portion 12B are also at the same position in the circumferential direction of the brush shaft 11; such an arrangement is conducive to ensuring that the brush sweeping assembly 12 has a better gathering effect on garbage during cleaning.

[0094] The first brush sweeping part 12A and the second brush sweeping part 12B may include a brush 121 and a scraper bar 122. The scraper bar 122 is arranged beside the brush 121. In actual arrangement, the height of the brush 121 may be higher than the height of the scraper bar 122, that is, the height of the scraper bar 122 is lower than the height of the brush 121. The height here may be understood as the dimension in the radial direction of the brush shaft 11. This can achieve a better cleaning effect.

[0095] Usually, the bristles of the brush 121 are relatively soft, and the scraper strip 122 can support the brush 121 .

[0096] In actual configuration, the brush 121 is tilted relative to the axial direction of the brush shaft 11, and the tilt angle may be 40° to 60°, which is beneficial to expanding the cleaning range of the brush 121 and improving the cleaning effect of the brush 121.

[0097] In actual setting, the brush sweeping assembly 12 and the brush shaft 11 can be connected in a detachable manner, for example, a slot can be provided on the brush shaft 11, and a plug-in portion can be provided on the brush sweeping assembly 12, and the detachable connection between the brush sweeping assembly 12 and the brush shaft 11 can be achieved through the plug-in cooperation between the plug-in portion and the slot. In this way, it is convenient to inspect, maintain or replace the brush sweeping assembly 12.

[0098] The brush sweeping assembly 12 may also be fixedly connected to the brush shaft 11 in a non-detachable manner.

[0099] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A roller brush, characterized in that: It includes a brush shaft with a cavity, a brush sweeping assembly, a transmission assembly and a cutting assembly; The brush sweeping assembly is arranged on the outer peripheral wall of the brush shaft, and the brush sweeping assembly can guide the cleaned garbage from the two ends of the brush shaft to the middle area of ​​the brush shaft; At least part of the transmission assembly is located in the cavity, the cutting assembly is arranged in the middle area of ​​the brush shaft, the cutting assembly includes a cutter tooth part and a cutter seat part, the cutter seat part is fixedly connected to the brush shaft, and when the brush shaft rotates, the cutter tooth part can be driven by the transmission assembly to reciprocate along the axial direction of the brush shaft relative to the cutter seat part to form a cutting motion.

2. The roller brush according to claim 1, characterized in that: The transmission assembly includes a transmission shaft, a gear assembly and a reciprocating member. One end of the transmission shaft extends into the cavity of the brush shaft, and the other end of the transmission shaft is connected to the brush shaft through the gear assembly. The reciprocating member is located in the cavity and is sleeved on the transmission shaft. When the brush shaft rotates, it can drive the transmission shaft to rotate to drive the reciprocating member to move back and forth along the transmission shaft. The knife tooth member is fixedly connected to the reciprocating member.

3. The roller brush according to claim 2, characterized in that: The outer peripheral wall of the transmission shaft is provided with a convex portion protruding outward in its radial direction, and the inner wall of the reciprocating member facing the transmission shaft is provided with a spiral slideway, and at least a part of the convex portion is located on the slideway.

4. The roller brush according to claim 2, characterized in that: The gear assembly is a differential gear assembly, and there is a speed difference between the speed of the transmission shaft and the speed of the brush shaft.

5. The roller brush according to claim 4, characterized in that: The differential gear assembly includes an input gear, a duplex gear and an output gear. The input gear is fixedly sleeved on the brush shaft, the output gear is fixedly sleeved on the transmission shaft, the input gear is meshed with the first gear portion of the duplex gear, and the output gear is meshed with the second gear portion of the duplex gear.

6. The roller brush according to claim 2, characterized in that: The gear assembly is located outside the brush shaft.

7. The roller brush according to any one of claims 1 to 6, characterized in that: A knife-tooth pressure strip is fixedly connected in the cavity of the brush shaft, and the knife-tooth pressure strip can apply pre-pressure to the knife-tooth part so that the knife-tooth part fits with the knife seat part.

8. The roller brush according to any one of claims 1 to 6, characterized in that: A counterweight is disposed in the cavity of the brush shaft. In the radial direction of the brush shaft, the counterweight and the cutting assembly are located on both sides of the transmission assembly.

9. The roller brush according to any one of claims 1 to 6, characterized in that: The roller brush is provided with more than two brush sweeping assemblies, and each of the brush sweeping assemblies is arranged along the circumference of the brush shaft; the brush sweeping assembly includes a first brush sweeping portion and a second brush sweeping portion, the first brush sweeping portion spirally extends from one end of the brush shaft to the middle area, and the second brush sweeping portion spirally extends from the other end of the brush shaft to the middle area, and the rotation direction of the first brush sweeping portion is opposite to that of the second brush sweeping portion.

10. The roller brush according to claim 9, characterized in that: The first brush sweeping part and the second brush sweeping part both include a brush and a scraper bar, the height of the scraper bar is lower than the height of the brush, and / or the inclination angle of the brush relative to the axial direction of the brush shaft is 40-60°.

11. The roller brush mechanism is characterized in that: The utility model comprises an outer shell and a roller brush, wherein the roller brush is rotatably mounted on the outer shell, and the roller brush is the roller brush according to any one of claims 1 to 10.

12. The roller brush mechanism according to claim 11, characterized in that: The roller brush mechanism includes an air duct connector, the air duct connector is communicated with the outer shell, and the position of the air duct connector corresponds to the middle area of ​​the roller brush.

13. The roller brush mechanism according to claim 11, characterized in that: The roller brush mechanism also includes a driving component, and the driving component is used to drive the brush shaft to rotate.

14. A cleaning device, characterized in that It comprises the roller brush described in any one of claims 1-10, or it comprises the roller brush mechanism described in any one of claims 11-13.

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