Dust head assembly and cleaning robot

Abstract

The scheme discloses a dust suction head assembly, comprising a dust suction head provided with air blowing holes, and a side brush mechanism is installed at both ends of the dust suction head, the side brush mechanism comprises rotatable brush wires, the number of the air blowing holes corresponds to the number of the side brush mechanism one by one, and the air blowing holes are arranged in the direction of air outlet and face the position of the rotating working surface of the dust suction head covering the brush wires. The scheme also discloses a cleaning robot provided with the dust suction head assembly. The dust suction head assembly is provided with the air blowing holes corresponding to the position of the rotating brush wires, so that the hair and fibers adhered to the brush wires can be blown away and sucked by the dust suction port, and the hair and fibers cannot be further wound on the brush wires, thereby improving the cleaning effect. The cleaning robot is provided with the structure capable of automatically recycling the garbage, the automation degree of the cleaning robot is improved, the participation degree of human beings is reduced, and the cleaning robot is easier to use.

Description

Technical Field

[0001] This utility model relates to the field of textile cleaning devices, specifically a vacuum head assembly and a cleaning robot equipped with this vacuum head assembly. Background Technology

[0002] Chinese patent document CN101991386A, published on March 30, 2011, discloses a blower-type brush head for a vacuum cleaner. This brush head includes a brush head housing with a suction port at the bottom and a blower fan at the bottom. This invention provides a blower-type brush head for vacuum cleaners that easily cleans grooves, crevices, and areas where dust easily accumulates, such as curtains and sofas, making dust removal convenient and practical, and greatly improving the dust removal effect of vacuum cleaners. The blower-type brush head for vacuum cleaners provided by this invention operates the blower fan at the front of the brush head while drawing in air, thereby blowing out dust from grooves and crevices and then sucking it into the vacuum cleaner, achieving the purpose of thoroughly cleaning dust.

[0003] For more automated robotic vacuum cleaners or cleaning robots, side brush mechanisms are commonly installed on both sides of the suction head. These mechanisms include side brush motors, which are equipped with side brush arms, and the brush arms have bristles attached. As the robot moves forward autonomously, the side brush motors drive the brush arms to rotate the bristles, sweeping debris from the ground into the suction head for removal using vacuum pressure. A common problem with these devices is that hair and fibers easily become entangled in the brush bristles, reducing cleaning effectiveness. Even with the addition of a blower mechanism as described in existing technologies, the problem of hair and fibers becoming entangled in the brush bristles cannot be effectively eliminated. Utility Model Content

[0004] To address the above issues, this invention provides a vacuum head assembly with an improved blowing structure, which can specifically blow away hair and fibers entangled on the brush bristles, significantly improving cleaning efficiency. Furthermore, this invention also provides a cleaning robot that utilizes the aforementioned vacuum head assembly and improves the dustbin's discharge structure, making the device more suitable for automated operation and resulting in higher overall efficiency.

[0005] To achieve the first objective of the invention, this utility model adopts the following technical solution: a vacuum cleaner head assembly, comprising a vacuum cleaner head with blowing holes, and side brush mechanisms installed at both ends of the vacuum cleaner head, the side brush mechanisms including rotatable brush bristles. The number of air blowing holes corresponds one-to-one with the number of side brush mechanisms, and the air blowing direction of the air blowing holes is towards the rotating working surface of the brush bristles covered by the dust suction head.

[0006] Preferably, a scraper is fixed to the rear side of the vacuum head; in the working state, the bottom of the scraper is in close contact with the ground, and an airflow closed area is formed between the ground, the scraper and the bottom surface of the vacuum head; the opening of the blower hole is located close to the ground on the left and right sides of the scraper and the inside of the side brush mechanism.

[0007] Preferably, the scraper is shaped like a V-shape that bulges backward, with the suction port located at the bottom of the V-shape.

[0008] Preferably, the air vent is connected to the blower.

[0009] Preferably, the blower hole is connected to the exhaust end of the dust extraction duct.

[0010] Preferably, the opening and closing of the air vent is adjustable.

[0011] To achieve the second objective of the invention, the present invention adopts the following technical solution: A cleaning robot equipped with the aforementioned vacuum head assembly.

[0012] As a preferred embodiment, the system includes a robot body and a recycling base station; the robot body includes a vacuum chamber and an automatic waste recycling mechanism; the automatic waste recycling mechanism includes a recycling pipe; the lower opening of the recycling pipe extends into the vacuum chamber; a check valve is installed on the recycling pipe; and the recycling base station is equipped with a waste suction conduit that can extend into the recycling pipe.

[0013] Preferably, the dust collection box is equipped with a wire mesh filter to hold the garbage sucked in; the lower opening of the recovery pipe extends into the wire mesh filter; the wire mesh filter is detachable.

[0014] Preferably, a removable filter element is installed on the downstream side of the airflow of the wire mesh filter.

[0015] The beneficial effects of this solution are: air blowing holes are designed on the suction head assembly at the position where the brush bristles rotate, which blow away the hair and fibers that have just adhered to the brush bristles and suck them away through the suction port, ensuring that they will not get tangled with the brush bristles further, thereby improving the cleaning effect; a structure that can automatically collect garbage is designed for the cleaning robot, which improves the automation level of the cleaning robot's operation, reduces the degree of human intervention, and makes it easier to use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the cleaning robot of this utility model; Figure 2 This is a front view of the cleaning robot of this utility model; Figure 3 This is a rear view of the cleaning robot of this utility model; Figure 4 This is a top view of the cleaning robot of this utility model; Figure 5This is a bottom view of the cleaning robot of this utility model; Figure 6 This is a three-dimensional view of the cleaning robot of this utility model from another perspective; Figure 7 This is an exploded view of the dust collection component of the cleaning robot of this utility model; Figure 8 This is a perspective view of the vacuum cleaner head assembly of this utility model.

[0017] The components include: 1. Hub motor; 2. Caster wheel; 3. Anti-collision strip; 4. 3060 aluminum profile; 5. 3030 aluminum profile; 6. 4-tooth square strip; 7. Dust collection box; 8. LiDAR; 9. Hose adapter; 10. 4040 aluminum profile; 11. Dust collection hose; 12. Main control room; 13. Dust collection fan; 14. External recovery port; 15. Pressure testing port; 16. Side brush motor; 17. Side brush arm; 18. Brush bristles; 19. Dust collection head fixing piece; 20. Dust collection head; 21. Scraper; 22. Air blower hole; 23. Sealing strip; 24. Dust collection box inner cover; 25. Spring handle; 26. Optical shaft sleeve; 27. Optical shaft. 7. Knurled hand-tightening screws 28. Steel wire filter screen 29. Battery compartment 30. Drive wheel mounting base 31. Universal wheel mounting base 32. Bottom cable hole 33. Hub motor shaft nut 34. Filter element 35. Display screen 36. Driver compartment 37. Hub motor control line 38. Chassis base plate 40. Electric push rod fixing part 41. Check valve 43. Battery box 44. Explosion-proof cable sheath 45. DuPont connector 46. Electric push rod 47. Fan adapter 48. Circular sealing gasket 49. Recycling pipe 50. Inner recycling port 51. Dust collection box outer cover 52. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0019] For ease of description, the directions of the cleaning robot during normal use will be defined as forward, backward, left, right, up, and down.

[0020] Example 1 Example 1 is a vacuum cleaner head assembly designed specifically for robotic vacuum cleaners or cleaning robots. For details, please refer to [link / reference]. Figure 8 As shown, the core component of this vacuum head assembly is the vacuum head 20, which has a rectangular body design but a slightly protruding structure at the rear. This design helps to optimize airflow and enhance cleaning effect.

[0021] A set of side brush mechanisms is installed symmetrically on both sides of the vacuum head 20. These side brush mechanisms are driven by side brush motors 16, which are mounted at both ends of the vacuum head 20 via fasteners. The shafts of the side brush motors 16 are perpendicular to the bottom surface of the vacuum head 20. The head of the side brush arm 17 is fixed to the bottom of the side brush motor 16 via hex screws and threaded holes in the side brush motor 16. The brush bristles 18 are fixed to the end mounting holes of the side brush arm 17 via insertion. In this example, the brush bristles 18 are designed in two sets and are detachable, allowing users to easily replace and maintain them according to actual usage.

[0022] A scraper 21 is fixed to the rear side of the vacuum head 20 by bolts and nuts. This scraper 21 is made of silicone, which is both durable and elastic to improve cleaning performance and protect the floor from scratches. Because the vacuum head 20 protrudes slightly rearward, the scraper 21 is also designed in a V-shape with a slightly rearward protrusion. During use, the bottom of the scraper 21 makes close contact with the ground, creating a relatively enclosed airflow area between the ground, the scraper 21, and the bottom surface of the vacuum head 20, which helps improve vacuuming efficiency.

[0023] A blower hole 22 is cleverly provided between the end of the side brush mechanism and the scraper 21. The opening of the blower hole 22 faces downward, and the blowing direction is perpendicular to the rotating working surface of the brush bristles 18 under the coverage of the suction head 20. This design allows the airflow from the blower hole 22 to blow the brush bristles 18 at any time during operation, effectively separating hair, fibers and other debris adhering to the brush bristles 18.

[0024] The suction port is cleverly positioned behind the suction head 20, at the V-shaped bottom of the scraper 21. Because an airflow-sealed area is formed between the ground, the scraper 21, and the bottom of the suction head 20, the negative pressure from the suction port can precisely remove debris from the area covered by the suction head 20, especially hair and fibers blown off from the bristles 18.

[0025] The airflow from the blower 22 can come from various sources, including a separately installed blower or the airflow from the exhaust end of the vacuum cleaner's suction duct. Figure 1 As shown, other design structures may also be adopted according to actual needs. Those skilled in the art can make flexible design choices according to actual needs.

[0026] In addition, the blow hole 22 or the air passage connected to the blow hole 22 is also equipped with opening and closing control, airflow size adjustment mechanism, etc. The design of these control and adjustment mechanisms can draw on existing similar technologies to ensure that the performance of the vacuum head assembly reaches the optimal level.

[0027] During operation, the vacuum head assembly moves forward while the side brush motor 16 drives the brush bristles 18 to rotate via the side brush arm 17, sweeping debris on both sides into the area covered by the vacuum head 20. Simultaneously, the airflow from the blower hole 22 blows hair and fibers adhering to the brush bristles 18 into a free state. Under the negative pressure of the suction port, hair, fibers, dust, and debris accumulated below the vacuum head 20 and in front of the scraper 21 are sucked away, thus achieving both floor cleaning and preventing the brush bristles 18 from becoming entangled in hair and fibers.

[0028] Example 2 Example 2 is a cleaning robot that utilizes the vacuum head assembly described in Example 1. This example cleaning robot features a compact design, consisting of two main parts: the robot body and a separate but collaborative recycling station (not shown). The recycling station is typically integrated with the robot's charging dock and securely installed in a designated location within a building. It not only provides convenient charging for the robot body but also serves as a waste collection transfer station, ensuring the robot body can efficiently charge and automatically empty the collected waste.

[0029] Specifically, see Figures 1 to 6 These illustrations detail the structure of the robot's main body. The robot integrates numerous precision components, including motion components, support components, lifting components, suction head components, suction components, an automatic waste collection mechanism, a control center, and a power component. Each part has been meticulously designed to ensure superior overall performance. The following is a detailed introduction to some of these core components.

[0030] Regarding the motion components, the hub motor 1 is securely mounted under the chassis base plate 40 via a robust drive wheel mounting bracket 31, while the omnidirectional wheels 2 are flexibly mounted on the same chassis base plate 40 via omnidirectional wheel mounting brackets 32. This arrangement ensures the robot's stability and flexibility during movement. In particular, Figure 5 The hub motor shaft nut 34 used to fix the hub motor 1 is clearly visible. At the same time, the chassis base plate 40 is also provided with multiple bottom wire holes 33 to facilitate the passage of power cables and signal cables and keep the internal wiring neat and orderly.

[0031] The support assembly is meticulously constructed from various specifications of aluminum profiles (such as 3030 aluminum profile 5, 3060 aluminum profile 4, and 4040 aluminum profile 10). These aluminum profiles are securely mounted on the chassis base plate 40 via connecting components, forming a structurally sound and reliable support frame. This support frame not only provides a solid mounting foundation for key components such as the lifting mechanism, dust collection box 7, main control room 12, drive room 37, and lidar 8, but also ensures the stability of the entire robot body. Furthermore, the chassis base plate 40 has two fixing holes at each of its front and rear ends, where the anti-collision strip 3 is firmly secured with hex bolts and nuts, providing additional safety for the equipment.

[0032] The design of the vacuum head assembly is equally ingenious. It achieves a detachable connection with the lifting mechanism through the clever combination of a knurled thumbscrew 28 and a four-threaded square strip 6. Specifically, the vacuum head fixing member 19 is securely mounted to the end of the electric push rod 47 via a connector, while the vacuum head 20 is tightly fixed to the vacuum head fixing member 19 via a Torx thumbscrew and its threaded hole. This design allows the vacuum head assembly to be easily disassembled for cleaning or maintenance when the Torx thumbscrew is loosened; while tightening the screw ensures the stability of the vacuum head assembly, preventing it from falling off or loosening. The vacuum head 20 has a suction port in the middle, and the suction hose 11 fits tightly with the suction port via a rubber adapter, ensuring airtightness and preventing detachment or loosening. For more detailed information about the vacuum head assembly, please refer to the description of Embodiment 1.

[0033] The lifting assembly is another major highlight of the robot body. It includes components such as an electric push rod 47, an electric push rod fixing component 41, an electric push rod positioning component, an optical axis 27, an optical axis sleeve 26, and a vacuum head fixing component. The electric push rod 47 is securely mounted on the aforementioned support assembly via the electric push rod fixing component 41, while the electric push rod positioning component is mounted on the chassis base plate 40, providing precise positioning for the electric push rod 47 and ensuring the smoothness and accuracy of the lifting process.

[0034] For vacuum cleaner components, see [link / reference]. Figure 7The component includes a dust collection box 7, with a sealing strip 23 glued to its top along its outer ring. The inner cover 24 of the dust collection box is fitted onto the sealing strip 23, creating a good seal. The vacuum cleaner fan 13 is fixed to the bottom of the dust collection box 7 via a fan adapter 48 using a combination of hex bolts and nuts. Both sides of the fan adapter 48 are embedded with circular sealing washers 49, which are pressed tightly after tightening to further ensure airtightness. A wire mesh filter 29 is placed on the inner flange of the dust collection box 7, and the filter element 35 is located below the wire mesh filter 29, downstream of the airflow. This layout allows for easy removal of both the filter element 35 and the wire mesh filter 29 for maintenance, waste collection, and replacement. The vacuum hose 11 is connected to the dust collection box 7 via a hose adapter 9. The inner ring of the hose adapter 9 has threads, effectively preventing air leakage and ensuring that suction is concentrated at the suction port, thereby improving cleaning efficiency.

[0035] The automatic waste collection mechanism is a major innovation of this cleaning robot. The check valve 43 is fixed to the inner surface of the dustbin cover 24 near the inside of the dustbin using hex bolts and nuts, while the collection pipe 50 is firmly secured to the outer ring of the check valve 43 with clamps. Thus, the inner collection port 51 on the dustbin cover 24, the inner ring of the check valve 43, and the collection pipe 50 together form a highly efficient collection channel. When the vacuum blower 13 operates, a negative pressure is generated inside the dustbin 7, causing the check valve 43 to automatically close and generating strong suction from the suction port of the vacuum head 20, effectively drawing in the waste to be cleaned and storing it inside the wire mesh filter 29. This reduces contamination of the filter element 35, extends its lifespan, and reduces replacement frequency. When the vacuum blower 13 is turned off, the robot returns to its charging dock for charging. At this time, the collection base, integrally fixed to the charging dock, is equipped with a waste suction conduit that extends into the wire mesh filter 29. The motor on the recycling base station starts, creating negative air pressure. This automatically sucks out the trash stored in the wire mesh filter 29 through the trash suction tube, emptying the dustbin 7 so the robot can be fully charged for the next use. Alternatively, users can choose manual recycling by removing the inner cover 24 of the dustbin and pulling out the wire mesh filter 29 to easily empty the trash. To improve the sealing and dustproof effect, a vacuum cleaner outer cover 52 can be added to the dustbin 7 and the outside of the inner cover 24. An outer collection port 14 is located on the outer cover 52, corresponding to the inner collection port 51, along with a convenient spring handle 25.

[0036] The control center is the "brain" of the robot. It includes the main control room 12 located below the dust collection box 7, the pressure measuring hole 15 on the side wall of the dust collection box 7, as well as components such as the lidar 8, display screen 36, drive chamber 37, hub motor control lines 38, and corresponding sensors, power lines, and signal lines. Through the control center, the robot can autonomously detect the road conditions ahead and decide its direction of travel. At the same time, it can automatically measure the amount of garbage in the dust collection box 7 through the pressure measuring hole 15 to determine whether it is necessary to return to the recycling station to discharge the garbage, achieving a high degree of intelligence and automation.

[0037] In terms of power components, the robot is equipped with a battery compartment 30, located below the main control room 12. The battery compartment 30 contains components such as a battery box 44, an explosion-proof cable sheath 45, and a DuPont connector 46, which mainly provide stable and continuous power support for the robot body during operation.

[0038] The cleaning robot in this example performs exceptionally well. It uses a vacuum blower 13 to generate strong negative pressure, which efficiently sucks up debris from the ground via the vacuum head assembly. The vacuum hose 11 then accurately delivers the debris into the wire mesh filter 29 inside the vacuum chamber 7. The wire mesh filter 29 removes large debris, while the filter element 35 further filters out smaller dust particles. When the control center detects a pressure drop below the calibrated value inside the vacuum chamber 7 via the pressure measuring port 15, it indicates that the chamber is full and needs emptying. At this point, the control center intelligently controls the robot to return to the recycling station. While charging, it uses the debris suction conduit to penetrate the recycling pipe 50, sucking out all the large debris from the wire mesh filter 29 and most of the small dust particles from the filter element 35, thus completely emptying the vacuum chamber 7 for future use.

[0039] The cleaning robot in this example features improvements to the vacuum head assembly, making it less prone to hair and fibers getting tangled in the brush bristles 18. This results in higher cleaning efficiency and better cleaning performance. The robot also incorporates an automatic waste collection mechanism that automatically detects the amount of waste and returns to the collection station for disposal. Therefore, this cleaning robot is more intelligent, requires less human intervention, and offers a better user experience.

Claims

1. A vacuum cleaner head assembly, comprising a vacuum cleaner head (20) having a blower hole (22), and side brush mechanisms mounted at both ends of the vacuum cleaner head (20), the side brush mechanisms including rotatable brush bristles (18), characterized in that, The number of air blowing holes (22) corresponds one-to-one with the number of side brush mechanisms, and the air blowing direction of the air blowing holes (22) is towards the location of the rotating working surface of the brush bristles (18) covered by the dust suction head (20).

2. A vacuum cleaner head assembly according to claim 1, characterized in that, A scraper (21) is fixed to the rear side of the vacuum head (20); in the working state, the bottom of the scraper (21) is close to the ground, and an airflow closed area is formed between the ground, the scraper (21) and the bottom surface of the vacuum head (20); the opening of the blow hole (22) is close to the ground on the left and right sides of the scraper (21) and the inside of the side brush mechanism.

3. A vacuum cleaner head assembly according to claim 2, characterized in that, The scraper (21) is shaped like a V-shape that bulges backward, and the suction port is located at the bottom of the V-shape.

4. A vacuum cleaner head assembly according to claim 1, 2, or 3, characterized in that, The blow hole (22) is connected to the blower.

5. A vacuum cleaner head assembly according to claim 1, 2, or 3, characterized in that, The blow hole (22) is connected to the exhaust end of the dust suction duct.

6. A vacuum cleaner head assembly according to claim 1, 2, or 3, characterized in that, The opening and closing of the air vent (22) is adjustable.

7. A cleaning robot, characterized in that, It is equipped with the vacuum head assembly as described in claim 1.

8. A cleaning robot according to claim 7, characterized in that, It includes a robot body and a recycling base station; the robot body includes a vacuum box (7) and an automatic waste recycling mechanism; the automatic waste recycling mechanism includes a recycling pipe (50); the lower opening of the recycling pipe (50) extends into the vacuum box (7); a check valve (43) is installed on the recycling pipe (50); the recycling base station is equipped with a waste suction conduit that can extend into the recycling pipe (50).

9. A cleaning robot according to claim 8, characterized in that, The dust collection box (7) is equipped with a wire mesh filter (29) for holding the garbage sucked in; the lower opening of the recovery pipe (50) extends into the wire mesh filter (29); the wire mesh filter (29) is detachable.

10. A cleaning robot according to claim 9, characterized in that, A removable filter element (35) is installed on the downstream side of the airflow of the wire mesh (29).

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