WO2026001397A1 - 地刷与吸尘器 - Google Patents

地刷与吸尘器

Info

Publication number
WO2026001397A1
WO2026001397A1 PCT/CN2025/094847 CN2025094847W WO2026001397A1 WO 2026001397 A1 WO2026001397 A1 WO 2026001397A1 CN 2025094847 W CN2025094847 W CN 2025094847W WO 2026001397 A1 WO2026001397 A1 WO 2026001397A1
Authority
WO
WIPO (PCT)
Prior art keywords
brush
roller
air outlet
brush assembly
floor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2025/094847
Other languages
English (en)
French (fr)
Inventor
彭劲松
梁玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Vacs Electrical Co Ltd
Original Assignee
Suzhou Vacs Electrical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Vacs Electrical Co Ltd filed Critical Suzhou Vacs Electrical Co Ltd
Publication of WO2026001397A1 publication Critical patent/WO2026001397A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/30—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with driven dust-loosening tools, e.g. rotating brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators

Definitions

  • This invention belongs to the field of floor brushes, specifically relating to floor brushes and vacuum cleaners.
  • a rotating roller brush is usually included in the floor brush. The roller brush contacts the surface through its opening, and as it rotates, the brush strips continuously tap and rub the surface, loosening and detaching the dirt, making it easier for the airflow to carry it into the vacuum cleaner.
  • CN2021101452788 proposes a floor brush, a hair removal tooth assembly, and a movable device.
  • This design includes a first and second set of hair removal teeth within the roller brush cavity.
  • the first set of teeth is positioned approximately in the middle of the air vent of the suction duct.
  • the first tooth extends from the end furthest from the first support plate, extending from the top of the roller brush cavity to the area between the roller brush and the air vent of the suction duct. This allows it to comb hair and other dirt off the roller brush.
  • Multiple first and second hair removal teeth are staggered, providing a cross-combing effect on the hair and dirt on the roller brush.
  • This invention was made to solve the above-mentioned problems, and aims to provide a floor brush and vacuum cleaner that can effectively prevent hair from getting tangled in the roller brush and improve cleaning efficiency.
  • the present invention adopts the following solution:
  • This invention provides a floor brush that is matched and connected to the ventilation duct of a vacuum cleaner. It utilizes the negative pressure of the vacuum cleaner to generate an airflow to clean dirt from a surface to be cleaned.
  • the brush includes: a floor brush body; a receiving cavity located within the floor brush body for housing a roller brush assembly, with a cleaning opening at the bottom facing the surface to be cleaned; and an air outlet pipe, the outer end of which is matched and connected to the ventilation duct.
  • the air outlet pipe passes through the receiving cavity from the outside to the inside and forms an air outlet on the inner wall of the receiving cavity facing and adjacent to the roller brush assembly, guiding the negative pressure into the receiving cavity, thereby forming a high-speed airflow from the cleaning opening to the air outlet.
  • traction unit disposed in the receiving cavity, for pulling hair away from the roller brush assembly, including: at least one row of traction teeth spaced along the axial direction of the roller brush assembly and with the tooth tips pointing towards the roller brush assembly; wherein, the space region in the receiving cavity extending from the edge of the air outlet along the through direction of the air outlet pipe to the roller surface of the roller brush assembly is denoted as space A, keeping the position of space A unchanged, its cross-sectional area is proportionally enlarged by at least 50% to obtain space B as an anti-turbulence area, the traction unit is formed outside the anti-turbulence area, and traction teeth are formed on both the left and right sides of the air outlet.
  • the beneficial effects of the above solution are as follows:
  • the anti-turbulence zone corresponds to the air outlet, where suction and airflow speed are at their maximum. No obstruction structures are placed in this zone, maximizing the airflow. This prevents the hair tips from flailing about; instead, the strong wind generated by the high-speed, high-flow airflow pulls them towards the air outlet, causing the remaining hair to quickly detach from the brush assembly and enter the outlet with the wind.
  • the airflow component in the receiving cavity located on both sides of the anti-turbulence zone also increases accordingly.
  • the wind force on the hair in the two sides, especially the far left and far right areas, directed towards the air outlet is also significantly enhanced.
  • the hair tip can quickly move close to the traction part and wrap around the main traction tooth (similar to a whip wrapping around a spinning top).
  • the main traction tooth pulls the hair tip, so on the one hand, the hair tip is pulled in the opposite direction by the traction tooth, thus preventing it from swinging randomly to join with its subsequent part and wrap around the roller; on the other hand, the subsequent part of the hair (referred to as: the hair body) is pulled away from the roller brush assembly by the tip as the roller brush assembly rotates, and is subjected to the wind force of the airflow moving towards the air outlet. Since the airflow is greatly obstructed at the main traction tooth, the wind force on the tip is less than that on the hair body.
  • this invention can smoothly separate hair from the roller brush assembly and allow it to enter the air outlet for any area of the receiving cavity, including the far left and far right areas, effectively avoiding the problem of hair tangling.
  • the traction part includes: at least one row of main traction teeth formed on the left and right sides of the air outlet, and multiple rows of auxiliary traction teeth formed at a certain distance from the main traction teeth along the rotation direction of the roller brush assembly; the rows of traction teeth do not intersect each other.
  • the alignment of the rows of traction teeth (main and auxiliary) rather than intersects reduces turbulence while maintaining hair capture ability. Hair that is not wrapped around the main traction teeth may still wrap around the auxiliary traction teeth, improving traction efficiency.
  • it effectively avoids the obstruction and disturbance to airflow caused by the intersect of traction teeth improves the stability, directionality, and airflow of the airflow in the receiving cavity, thereby further improving the hair cleaning effect.
  • the shortest distance between the lowest and highest points of the air outlet is used as the opening height of the air outlet.
  • the air outlet is divided into three equal parts: lower, middle, and upper.
  • the main traction unit is formed on the left and right sides of the middle part of the air outlet. This results in better anti-turbulence and cleaning effects.
  • the area closest to the surface to be cleaned/the cleaning opening is the lower part.
  • the cross-sectional area of space B is 60% larger than that of space A. This results in better anti-turbulence and cleaning effects.
  • the floor brush provided by the present invention further includes: a roller brush assembly, detachably installed in a receiving cavity, comprising a rotatable roller and multiple sets of brush strips mounted on the roller; wherein, the brush strips are configured to be V-shaped when viewed in the direction of rotation of the roller brush assembly, having two wings extending from the left and right ends of the roller towards the center with gradually narrowing spacing and a middle section connecting the two wings; the thickness or density of the bristles of the two wings is not less than twice that of the middle section.
  • the outermost ends of the two wings first come into contact with hair and other dirt on the surface to be cleaned.
  • the high density of the two wings makes them less permeable to air, and the wind (high-speed airflow) is more likely to flow along the outermost ends of the two wings towards the middle section of the V-shape, thereby pushing the hair from both sides towards the middle section.
  • the middle section has a lower density, less resistance, and is closer to the air outlet, making it more permeable to air, thus making it easier for the hair gathered in the middle section to leave the middle section with the wind and quickly fly into the air outlet.
  • the floor brush provided by the present invention further includes: a roller brush assembly, detachably installed in a receiving cavity, comprising a rotatable roller and at least two sets of brush strip units mounted on the roller; wherein, the brush strip units are in the shape of an "eight", having two wings extending from the left and right ends of the roller towards the middle and gradually narrowing in the axial direction of the roller to finally form a tightening opening; and along the rotation direction of the roller, the tightening openings of at least one set of brush strip units are staggered with the tightening openings of other brush strip units when viewed along the rotation direction of the roller; every time the roller rotates once, the rotation trajectory of the tightening opening of any set of brush strip units is completely covered by the rotation trajectory of the two wings of another set of brush strip units.
  • a roller brush assembly detachably installed in a receiving cavity, comprising a rotatable roller and at least two sets of brush strip units mounted on the roller; wherein, the brush strip units are in the shape of
  • At least one set of the brush bar units has its tightening opening offset from the center of the brush bar along its length by a certain distance, and the rotation trajectory of the tightening opening passes through the anti-turbulence area. This makes it easier for hair and other dirt to reach the middle section/tightening opening from both ends of the brush bar unit, and more easily enter the air outlet from the tightening opening with the airflow.
  • the center of the tightening opening of at least one set of brush bar units is located at the center of the brush bar length direction, and the rotation trajectory of the tightening opening passes through the space A. In this way, hair and other dirt can more easily reach the middle section/tightening opening from both ends of the brush bar unit, and can more easily enter the air outlet from the tightening opening with the airflow.
  • the floor brush provided by the present invention further includes: a roller brush assembly, detachably installed in a receiving cavity, comprising a rotatable roller and at least three sets of brush strip units mounted on the roller; wherein each set of brush strip units includes a brush strip and a brush strip base through which the brush strip is inserted; the brush strip is arranged in a figure-eight shape after being inserted into the brush strip base, having two wings extending from the left and right ends of the roller towards the middle and gradually narrowing in the axial direction of the roller to finally form a tightening opening; the center of the tightening opening is offset from the center in the length direction of the brush strip by a certain distance; the at least three sets of brush strip units are all formed by installing the same type of brush strip, and by installing the brush strip of at least one brush strip unit in the opposite direction to the brush strip in any other brush strip unit so that the tightening openings of the two sets of brush strips are completely offset along the rotation direction of the roller.
  • a roller brush assembly detachably
  • This structural design ensures stability in each rotation cycle (one full circumferential rotation) of the roller brush assembly, eliminating any gaps and ensuring that all surfaces to be cleaned, corresponding to the length of the roller brush assembly, come into contact with the brush strips and are thoroughly cleaned, resulting in a complete cleaning trajectory and minimal residue. Furthermore, the high airflow velocity at the tightening point rapidly draws away hair from the center, creating negative pressure that attracts hair from both sides. This makes it easier for hair and other debris to reach the middle section/tightening point from both ends of the brush strips and to enter the air outlet with the airflow. Additionally, installing the same type of brush strip from either end of the roller or reversing the direction of the brush strips creates staggered tightening points, simplifying parts manufacturing, installation, and inspection.
  • the floor brush provided by the present invention further includes: a roller brush assembly, detachably installed in a receiving cavity, comprising a rotatable roller and at least three sets of brush strip units mounted on the roller; wherein each set of brush strip units includes a brush strip and a brush strip base through which the brush strip is inserted; the brush strip is inserted into the brush strip base and forms a figure-eight shape, having two wings extending from the left and right ends of the roller towards the center and gradually narrowing in the axial direction of the roller to finally form a tightening opening; the three sets of brush strip units are formed by installing two types of brush strips, the tightening opening of the first type of brush strip is located at the center in the length direction of the brush strip, and the tightening opening of the second type of brush strip is offset from the center to one side by a certain distance; the roller has one set of the first type of brush strip and two sets of the second type of brush strip, one set of the second type of brush strip is installed in the opposite direction to the other set
  • the roller brush assembly rotates stably in each rotation cycle (one full circumferential rotation) without any gaps, and the surfaces to be cleaned corresponding to the length of the roller brush assembly will all come into contact with the brush strips and be cleaned by the brush strips, resulting in a complete cleaning trajectory and minimal dirt residue.
  • the high airflow speed at the tightening port allows hair to be quickly sucked away.
  • the high-speed airflow creates negative pressure, attracting hair from both sides, making it easier for hair and other dirt to reach the middle section/tightening port from both ends of the brush strips, and more easily enter the air outlet from the tightening port with the airflow.
  • the extension direction of the brush strip from the root to the top, or the extension line of the bristles, on the roller brush assembly intersects or does not intersect with the axis of the roller; the thickness of the two wings of the brush strip is not less than 3mm.
  • the fact that the extension line of a single bristle does not intersect with the axis of the roller increases the contact area between the bristles and dirt such as hair, making it less likely for hair and dirt to be trapped by the bristles.
  • the thickness of the two wings being not less than 3mm allows airflow to flow from both ends towards the middle as much as possible.
  • the floor brush provided by the present invention further includes: a roller brush assembly, detachably installed in a receiving cavity, comprising: a rotatable roller body, multiple sets of brush strip units protruding from the surface of the roller body, and two end caps located at both ends of the roller body and rotating synchronously with the roller body; wherein, the brush strip units extend arcuately on the surface of the roller body, the end caps are provided with arcuate inclined surfaces, and the windward side of at least one brush strip unit is smoothly connected to an arcuate inclined surface, together forming a guide fan blade that guides the flow from the end cap to the middle of the roller body.
  • a roller brush assembly detachably installed in a receiving cavity, comprising: a rotatable roller body, multiple sets of brush strip units protruding from the surface of the roller body, and two end caps located at both ends of the roller body and rotating synchronously with the roller body; wherein, the brush strip units extend arcuately on the surface of the roller body, the end caps are provided
  • the present invention also provides a vacuum cleaner, comprising: a vacuum cleaner body having a negative pressure source for generating negative pressure and a ventilation duct for transmitting negative pressure outward; and a floor brush, matched and connected to the ventilation duct, which uses negative pressure to generate suction airflow to clean dirt on the surface to be cleaned; wherein the floor brush is the floor brush described in the above-mentioned ⁇ vacuum cleaner>. Based on the same improved technology, this floor brush has the same beneficial effects as the ⁇ floor brush>.
  • Figure 1 is a schematic diagram of the structure of a vacuum cleaner according to an embodiment of the present invention.
  • Figure 2 is a schematic diagram of the structure of the floor brush according to an embodiment of the present invention.
  • Figure 3 is a schematic diagram of the structure of the floor brush according to an embodiment of the present invention.
  • Figure 4 is a schematic diagram of the internal structure of the floor brush after removing the roller brush assembly according to an embodiment of the present invention
  • Figure 5 is a schematic diagram of the internal structure of the floor brush after removing the roller brush assembly according to an embodiment of the present invention.
  • Figure 6 is a schematic diagram of the internal structure of the floor brush after removing the roller brush assembly according to an embodiment of the present invention
  • Figure 7 is a schematic diagram of the structure of the roller brush assembly according to an embodiment of the present invention.
  • Figure 8 is an exploded view of the roller brush assembly according to an embodiment of the present invention.
  • Figure 9 is a partial enlarged view of the end of the roller brush assembly according to an embodiment of the present invention, wherein (a) is a perspective view and (b) is a front view;
  • Figure 10 is a cross-sectional view of the floor brush according to an embodiment of the present invention after removing the roller brush assembly and part of the housing;
  • Figure 11 is a schematic diagram of the traction unit according to an embodiment of the present invention.
  • Figure 12 is a partial front view of the structure of the floor brush according to an embodiment of the present invention after removing the roller brush assembly and most of the housing;
  • Figure 13 is a simplified diagram showing the positional relationship between the roller and spaces A and B in an embodiment of the present invention.
  • Figure 14 is a simplified structural diagram of the brush bar involved in a variation of the present invention.
  • Figure 15 is a schematic diagram of the structure of the brush strip after it is inserted and installed into the brush strip base according to a first variation of the present invention.
  • Figure 16 is a simplified structural diagram of the brush bar involved in the second variation of the present invention.
  • Figure 17 is a schematic diagram of the brush base and brush strip involved in the second variation of the present invention.
  • the vacuum cleaner 1000 includes a vacuum cleaner body 10 and a floor brush 20.
  • the vacuum cleaner 1000 is a cordless vacuum cleaner that can use negative pressure to suck up dust, hair and other dirt from surfaces to be cleaned.
  • the vacuum cleaner body 10 has a negative pressure source, a ventilation duct 11, and a dust collection mechanism.
  • the negative pressure source generates negative pressure
  • the ventilation duct 11 transmits the negative pressure outward to the surface to be cleaned
  • the dust collection mechanism is used to collect dirt that enters through the ventilation duct 11.
  • the floor brush body 21 includes a housing 211 and a drive unit (not shown in the figure).
  • the drive unit is disposed inside the housing 211 and connected to the roller brush assembly 23, including a drive motor that drives the roller brush assembly 23 to rotate at high speed around the length direction (axial direction) and a belt connecting the drive motor and the roller brush assembly 23.
  • the roller brush assembly 23 is detachably installed in the receiving cavity 22, with the same length direction as the receiving cavity 22 and the same as the cleaning opening 221. It includes a roller body 231, three sets of brush strip units 232, and two end caps 233.
  • the roller 231 is connected to the drive motor via a belt and can rotate at high speed around the axis, typically at a speed of 2000 to 3000 r/min.
  • the brush strip 232b can be a strip structure with bristles implanted on it, or it can be a strip or sheet structure without bristles, such as a rubber/plastic strip.
  • the brush strip 232b with a bristle implanted strip structure is used as an example.
  • the brush strip 232b is a long straight strip with no directionality.
  • the bristles are arranged along its length, with a lower density in the middle section. They are inserted into the V-shaped opening groove of the brush strip base 232a, and the shape after installation is consistent with the shape of the opening groove.
  • the left and right ends of the brush strip 232b only extend to the inner surface of the two end caps 233.
  • the brush strip 232b is V-shaped when viewed along the rotation direction of the roller brush assembly 23, and has two wings 232b-1 and a middle section 232b-2.
  • the two wings 232b-1 extend from the left and right ends of the roller body 231 towards the middle, and the axial spacing of the roller body 231 gradually tightens.
  • the middle section 232b-2 connects the two wings 232b-1, and its length is not less than 1/5 of the outlet length.
  • the thickness or density of the bristles of the two wings 232b-1 is at least twice that of the middle section 232b-2, making the airflow in the middle section 232b-2 greater and faster than that in the two wings 232b-1, resulting in stronger wind/suction.
  • the extension line of a single bristle in the brush bar unit 232 does not intersect with the axis of the roller 231.
  • the thickness of the two wings 232b-1 is about 5mm.
  • the middle section 232b-2 is located in the middle of the brush bar unit 232, and the middle of the brush bar unit 232 corresponds to the outlet 242.
  • the brush strip unit 232 extends arcuately along the axial direction of the roller 231 on the surface of the roller 231.
  • the brush strip base 232a also extends arcuately along the surface of the roller 231.
  • the brush strip base 232a has two sides in the circumferential direction. Both sides extend arcuately along the axial direction of the roller 231.
  • one side is the windward side and is rotated first to face the air outlet 242.
  • the other side is the leeward side located on the back of the brush strip 232b and is rotated last to face the air outlet 242.
  • each end cap 233 is provided with an arc-shaped inclined surface 233a-1, and at least one windward side of the brush unit 232 is smoothly connected to an arc-shaped inclined surface 233a-1, together forming a guide fan blade that guides the flow from the end cap 233 to the middle of the roller 231.
  • the area on the outer circumference of the end cap 233 near the brush unit 232 is designated as the fan blade forming area, which has three convex blade units 233a and three connecting units 233b connecting the convex blade units.
  • This side is an arc-shaped inclined surface 233a-1, which is smoothly connected to the brush bar base 232a in an arc shape and rotates synchronously, so that this arc surface serves as a fan blade 233a-1 that guides airflow from the end to the center.
  • the inclined extension direction of both the fan blade 233a-1 and the brush bar base 232a is inclined from the end of the roller 231 towards the center.
  • the fan blade 233a-1 can push and guide airflow from the far left/far right end to the center. Combined with the large air volume, high wind speed and strong suction in the center of the brush bar, hair is more easily moved to the center and quickly enters the air outlet.
  • the fan blade 233a-1 in conjunction with the brush bar base 232a, not only pushes the hairs on the far left/far right towards the center with the airflow, but also pushes the hairs away from the brush bar 232b. This causes the hairs to actively converge in an air cushion higher than the tip of the brush bar 232b (a distance greater than the distance from the tip to the roller surface), pulling them away both circumferentially and axially, making it difficult for the hairs to wrap around the bristles on both sides and connect end to end.
  • the tip of the brush bar 232b is the outermost point radially along its rotation trajectory. As shown in Figures 4-6 and 10, the outer end 241 of the air outlet duct 24 is matched and connected to the ventilation duct 11.
  • the inner surface of the air outlet duct 24 extends from the outer wall of the receiving cavity 22 to the inner wall of the receiving cavity 22, completely penetrating the receiving cavity 22 in the thickness direction (penetrating on one side).
  • An air outlet 242 is formed on the inner wall of the receiving cavity 22, facing the roller brush assembly 23 and adjacent to the roller brush assembly 23, guiding negative pressure to the receiving cavity 22, thereby forming a high-speed airflow from the cleaning opening to the air outlet 242.
  • the air outlet duct 242 penetrating the receiving cavity 22 if the inner wall of the receiving cavity 22 corresponding to the penetration point has a structure in which part protrudes towards the roller brush assembly 23 and the other part is relatively concave, then the air outlet 242 is formed after penetrating the protruding part.
  • the air outlet 242 is formed on the inner surface of the receiving cavity 22 closest to the roller brush assembly 23, and there is no other structural obstruction between the air outlet 242 and the roller brush assembly 23. After the inner surface of the air outlet 24 is penetrated, it can be smoothly connected to the inner wall of the receiving cavity 22. That is, the connection between the air outlet 242 and the inner wall of the receiving cavity 22 is rounded, forming a funnel-shaped transition structure that gradually expands outward.
  • the traction unit 25 is disposed in the receiving cavity 22 and is used to pull hair away from the roller brush assembly 23.
  • the traction unit 25 includes upper and lower rows of traction teeth 251 and 252 arranged at intervals along the axial direction of the roller brush assembly 23, with the tooth tips pointing towards the upper and lower rows of traction teeth 251 and 252.
  • the rows of traction teeth 251 and 252 do not intersect each other.
  • the through-path F1 of the air outlet duct 24 (the dashed arrow in Figure 10) is horizontal. Projecting an orthographic projection along this path, the orthographic projection of the inner surface of the air outlet duct 24 is circular, and the orthographic projection of the edge of the air outlet 242 is also circular.
  • the space within the receiving cavity 22 extending from the edge of the air outlet 242 (P1 and P2 in Figure 10 are the upper and lower edge points) along the through-path F1 of the air outlet duct 24 to the surface of the roller 231 of the roller brush assembly 23 is denoted as space A (corresponding to the cylindrical area between P1 and P2 in Figure 13).
  • the cross-sectional area is proportionally enlarged by 60% to obtain space B, which serves as the anti-turbulence area B (corresponding to the cylindrical area between P3 and P4 in Figure 10).
  • the traction part 25 is formed outside the anti-turbulence area B.
  • the orthographic projection of the edge of the air outlet 242 is not circular but rectangular or other shapes, the cross-sections of space A and space B also have corresponding shapes.
  • the air outlet is divided into three equal parts: lower, middle, and upper.
  • a row of main traction teeth 251 is formed on the left and right sides of the middle part of the air outlet 242, and a row of auxiliary traction teeth 252 is formed on the left and right sides of the upper part of the air outlet 242.
  • the cross-sectional area of the traction teeth gradually increases from the tip to the root in the longitudinal (vertical direction).
  • the shape of the main traction teeth 251 is a right-angled triangle in the longitudinal section from the tip to the root, and the shape of the auxiliary traction teeth 252 is a trapezoid in the transverse (front-back direction) section from the tip to the root.
  • the specific working process of the vacuum cleaner 1000 provided in this embodiment is as follows:
  • the negative pressure source and drive motor are activated.
  • the negative pressure source generates negative pressure, which is transmitted to the receiving cavity 22 of the floor brush 20 through the ventilation duct 11 and the air outlet 24.
  • the negative pressure is then transmitted to the surface to be cleaned through the cleaning opening 221 of the receiving cavity 22, forming a suction airflow.
  • the drive motor drives the roller brush assembly 23 to rotate at high speed, and the brush strips continuously slap and rub the ground, causing the hair to loosen and detach from the ground.
  • the roller brush assembly 23 rotates upward from the cleaning opening 221
  • the hair tips located in the middle of the roller brush assembly 23 are rotated to the anti-turbulence zone B.
  • the hair tips are pulled towards the air outlet 242 by the strong wind generated by the high-speed, high-flow airflow (preventing them from swinging around), and the following parts of the hair are quickly detached from the roller brush assembly 23 and enter the air outlet 242 with the wind, then enter the ventilation duct 11, and are finally collected by the dust collection mechanism.
  • the hair tips are flung upwards by the roller brush assembly 23, they quickly approach and wrap around the main traction teeth 251 (similar to a whip wrapping around a spinning top). This causes the main traction teeth 251 to pull and hold the hair tips.
  • the hair tips wrap around the main traction teeth 251 they are also subjected to a reverse pulling force from the main traction teeth 251, thus reducing resistance.
  • the hair tip and the hair body (the subsequent part of the hair) converge and then wrap around the roller brush assembly 23.
  • the hair body As the roller brush assembly 23 rotates, the hair body is pulled away from the roller brush assembly 23 by the tip. Due to the strong wind at the hair body, it will first enter the anti-turbulence area with the wind and then enter the air outlet. Then, the strong wind at the air outlet pulls the hair tip away from the main traction tooth 251, so that both the hair tip and the hair body enter the air outlet with the wind and then flow into the dust collection mechanism.
  • the arc-shaped inclined surface 233a-1 of the end cap 233 and the brush bar unit 232 and its middle section 232b-2 cause the end airflow to flow upward and along the outermost end of the two wings 232b-1 to the V-shaped middle section 232b-2, pushing the hair from bottom to top and from both sides to the middle section.
  • the hair gathered in the middle section is rotated to the anti-turbulence area B and then quickly enters the air outlet 242 with the strong wind.
  • the brush strip has no notches, and a single brush strip rotates once with the roller, with a continuous friction trajectory against the cleaning surface along the length of the roller.
  • notches can also be made in the brush strip, as detailed in the modified examples below.
  • each brush strip is continuous and straight, without directionality, and all have rectangular notches.
  • the first type of brush strip 232bI1 consists of one strip, and the center (center of symmetry) of its notch 232bI1-2 is located at the center of the length of the brush strip 232bI1.
  • the second type of brush strip 232bI2 consists of two strips, and the center of each notch 232bI2-2 is offset to the left from the center of the brush strip 232bI1 (the dotted line in the figure) by a certain distance. In this modified example, this offset distance is 1.5 times the length of the notch 232bI1-2, and the length of the notch 232bI1-2 is 10mm.
  • each type of brush strip 232bI has two wings that extend from the left and right ends of the roller towards the center, with the spacing gradually narrowing upwards along the roller axis, eventually forming tightening openings (corresponding notches) 232bII-2.
  • the installation method of the two second type of brush strips 232bI2 in Figure 15 is as follows: the first (topmost) brush strip 232bI2 is inserted into the brush strip base 232a in the direction shown in Figure 14, and the second (middle) brush strip 232bI2 is inserted into the brush strip base 232a in the opposite direction to the first brush strip 232bI2 (rotated left and right/horizontally 180° in Figure 14), thus forming two different opening positions on the roller 231, with the two tightening openings on the first and second brush strips staggered, as shown in Figure 15.
  • the tightening openings of the three brush strips 232bI are staggered when viewed along the rotation direction of the roller 231; with each rotation of the roller 231, the rotation trajectory of the tightening opening of any one brush strip is completely covered by the rotation trajectory of the two wings of another or two brush strips.
  • roller brush assembly 23 rotates stably in each rotation cycle (one full circumferential rotation) without any gaps.
  • the surfaces to be cleaned, corresponding to the length direction of the roller brush assembly 23, will all come into contact with the brush strips and be cleaned by the brush strips 23. The cleaning trajectory is complete, and there is little dirt residue.
  • the three sets (individuals) of brush strips are all of the same type 232bII with identical structure and dimensions.
  • Brush strip 232bII is continuous and straight, without directionality, and has a rectangular notch.
  • the three brush strips 232bII are respectively inserted into the V-shaped opening groove of the brush strip base 232a, forming a figure-eight shape. They have two wings 232bII-1 extending from the left and right ends of the roller 231 towards the center, with the spacing between the rollers gradually narrowing upwards along the axial direction of the roller 231, ultimately forming a tightening opening 232bII-2.
  • the center of the tightening opening 232bII-2 is offset from the center of the brush strip 232bII by a certain distance.
  • the length of the tightening opening 232bII-2 is 10mm, and it extends 10mm to the left from the left side of the center of the brush strip 232bII (the dotted line in Figure 16).
  • the installation method of the three brush strips 232bII in Figure 17 is as follows: the first (topmost) and third (bottommost) brush strips 232bII are inserted into the brush strip base 232a in the forward direction as shown in Figure 16, and the second (middle) brush strip 232bII is inserted into the brush strip base 232a in the opposite direction (rotated left and right/horizontally 180° as shown in Figure 16), thus forming an opening position on the roller 231 where the tightening opening on the second brush strip in Figure 17 is offset from the tightening openings of any other brush strips.
  • the tightening opening 232bII-2 is slightly to the left of the center; if the second brush strip 232bII rotates to the left side of the opening groove, the tightening opening 232bII-2 is slightly to the right of the center.
  • the third brush strip 232bII enters in the same way as the first brush strip 232bII.
  • the tightening openings 232bII-2 of the first or third and second brush bars 232bII are symmetrically distributed with respect to the center line of the brush bar 232bII, and the tightening openings 232bII-2 are completely offset (without any overlap).
  • the rotation trajectory of the tightening opening 232bII-2 of the second brush bar 232bII is completely covered by the rotation trajectory of the two wings of the first or third brush bar 232bI.
  • the brush strip can also adopt a filamentless structure such as a rubber strip or a plastic strip.
  • the two wings of the figure-eight or V-shaped brush strip do not have filaments, but are formed by rubber/plastic strips.
  • the above embodiments and variations are described using three sets of brush strip units/brush strips as examples, and the three sets are basically similar in shape, but the number of brush strip units/brush strips in this invention is not limited to this. For example, fewer or more brush strip units/brush strips can be used.

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Abstract

提供了一种地刷与吸尘器，能够切实避免毛发缠绕滚刷组件，属于吸尘器领域。地刷包括：地刷主体（21）；容纳腔（22），容纳滚刷组件（23），底部设有清洁开口（221）；出风管（24），从外至内贯穿容纳腔（22）并在容纳腔（22）内壁形成朝向滚刷组件（23）、与该滚刷组件（23）相邻的出风口（242），将负压导向容纳腔（22）；牵引部（25），设置在容纳腔（22）中，用于牵引毛发脱离滚刷组件（23），包括：沿着滚刷组件（23）的轴向间隔设置且齿尖指向滚刷组件的至少一排牵引齿（251，252）；其中，将容纳腔（22）中，从出风口（242）的边缘，沿着出风管（24）的贯穿方向延伸至滚刷组件（23）的滚体表面的空间区域记为空间A，保持空间A的位置不变，将其横截面积等比例放大至少50％得到空间B作为防扰流区域，牵引部（25）形成在防扰流区域外，并且出风口（242）左右两侧均形成有牵引齿（251，252）。

Description

地刷与吸尘器 技术领域
本发明属于地刷领域，具体涉及地刷与吸尘器。
背景技术
在吸尘器中，电风机高速旋转产生负压，从而形成从外至内的高速气流，通过高速气流将位于地刷附近待清洁表面的灰尘、毛发等污物输送至吸尘器的集尘桶内。为了更有效地收集污物，通常在地刷中设置能够转动的滚刷，滚刷通过地刷的开口与待清洁表面接触，在滚刷转动过程中，刷条持续拍打摩擦待清洁表面，促使污物从待清洁表面松动脱离，使污物更容易地被气流输送入吸尘器。
当待清洁表面存在较多长头发时，毛发容易缠绕滚刷，并且越缠越紧，进而毛发又挂住灰尘颗粒或其他毛发，导致污物在滚刷表面堆积缠绕而无法被吸入吸尘器，清理效果变差。当发生严重缠绕，滚刷甚至无法转动。为此，用户需要特别留意毛发缠绕情况，手动清理而非吸尘器吸入滚刷上毛发等污物，给用户带来额外负担。
为了解决毛发缠绕滚刷的问题，现有技术CN2021101452788提出了一种地刷、除毛齿组件及可移动设备，在滚刷腔内设置第一除毛齿组和第二除毛齿组，第一除毛齿组的位置大致位于抽吸风道的风口的中部位置，第一除毛齿远离第一支架板的一端，从滚刷腔的顶部延伸至滚刷与抽吸风道的风口之间的区域，能够将毛发等脏污从滚刷上梳理下来，并且多个第一除毛齿及多个第二除毛齿之间交错分布，对滚刷上的毛发等脏物进行交错梳理。但是，这样的设计导致风口将近一半被第一除毛齿组阻挡，风口处气流量大降、气阻大增，风口面积降低，污物进入风口的几率降低，清洁效率降低，而且导致相应的滚刷腔两侧的分流则更低，特别是靠近滚刷两端的极左和极右侧的气流量最低，毛发更容易随着滚刷缠绕而非被气流带入风口。而且，第一除毛齿和第二除毛齿梳理交错设置，会造成滚刷腔中产生更大的扰流，气流混乱，毛发先端乱摆，前方受阻，更易后摆至缠绕滚刷。
发明内容
本发明是为了解决上述问题而进行的，目的在于提供地刷与吸尘器，能够切实避免毛发缠绕滚刷，并提升清理效率。
为了实现以上目的，本发明采用了以下方案：
<地刷>
本发明提供地刷，与吸尘器的通风管道匹配连通，利用吸尘器的负压产生吸入气流对待清洁表面上的污物进行清洁，包括：地刷主体；容纳腔，位于地刷主体内，用于容纳滚刷组件，底部具有朝向待清洁表面的清洁开口；出风管，外端部与通风管道匹配连通，出风管从外至内贯穿容纳腔并在容纳腔内壁形成朝向滚刷组件、并且与该滚刷组件相邻的出风口，将负压导向容纳腔，从而形成从清洁开口至出风口的高速气流；牵引部，设置在容纳腔中，用于牵引毛发脱离滚刷组件，包括：沿着滚刷组件的轴向间隔设置且齿尖指向滚刷组件的至少一排牵引齿；其中，将容纳腔中，从出风口的边缘，沿着出风管的贯穿方向延伸至滚刷组件的滚体表面的空间区域记为空间A，保持空间A的位置不变，将其横截面积等比例放大至少50％得到空间B作为防扰流区域，牵引部形成在防扰流区域外，并且出风口左右两侧均形成有牵引齿。
以上方案的有益效果为：防扰流区域对应出风口，吸力最大、气流速度最大，在此区域不设置任何阻挡结构，最大限度提升防扰流区域的气流量，让毛发先端在此区域不会乱摆，而是受到高速、大流量气流产生的强劲风力被大力扯向出风口，并带动毛发的后续部分快速脱离滚刷组件，随风进入出风口。同时，由于防扰流区域气流量大幅提升，因此，容纳腔中位于防扰流区域左右两侧区域的气流分量也相应提升，两侧区域特别是极左、极右区域毛发受到的朝向出风口方向的风力也大幅增强。以相对而言气流量最小、风力最小的极左/右区域毛发为例，在毛发先端被高速转动的滚刷组件从清洁开口拾起并向上甩动的过程中，毛发先端能够迅速移动靠近牵引部，并缠绕主牵引齿(类似鞭子缠绕陀螺)，通过主牵引齿牵引住毛发先端，这样一方面毛发的先端受到牵引齿的反向拉力，从而无法乱摆至与其后续部分汇合进而缠绕滚体；另一方面毛发的后续部分(简称为：毛发主体)随着滚刷组件的转动就会被先端牵引着脱离滚刷组件，并受到气流对其作用的朝向出风口方向移动的风力，由于主牵引齿处气流受阻大，因此先端受到风力小于毛发主体受到的风力，毛发主体在风力作用下，带动先端解缠离开主牵引齿(风力拉扯毛发从牵引齿上解缠)，然后随风进入出风口。因此，本发明对于处于容纳腔中任意区域的毛发，包括极左、极右区域，都可以使其与滚刷组件顺利分离，并进入出风口，切实避免毛发缠绕问题。
优选地，在本发明提供的地刷中，牵引部包括：形成在出风口左右两侧的至少一排主牵引齿，和沿着滚刷组件的转动方向与主牵引齿相隔一定距离形成的多排辅牵引齿；各排牵引齿之间相互不交错。各排牵引齿(主辅)对齐而非交错，既能减少扰流又保持毛发捕获能力，未缠绕主牵引齿的毛发还有机会缠绕辅牵引齿，提升牵引效率，而且有效避免牵引齿相互交错对气流产生的阻碍和扰动，提升容纳腔内气流的稳定性、方向性、气流量，从而进一步提升毛发清理效果。
优选地，在本发明提供的地刷中，将出风口最低点与最高点的最短距离作为出风口的开口高度，基于开口高度将出风口三等分为下部、中部、上部，主牵引单元形成在出风口中部的左右两侧。这样防扰流效果和清理效果更好。距离待清洁表面/清洁开口最近的区域是下部。
优选地，在本发明提供的地刷中，空间B的横截面积比空间A大60％。这样防扰流效果和清理效果更佳。
优选地，本发明提供的地刷还包括：滚刷组件，可拆卸地安装在容纳腔中，包括可转动的滚体和安装在该滚体上的多组刷条；其中，刷条被设置为：迎滚刷组件的转动方向看呈V形，具有从滚体左右两端向中部延伸且间距逐渐收紧的两翼和连接两翼的中段；两翼的刷丝厚度或密度不小于中段的两倍。刷条转动过程中，两翼的最外端最先接触待清洁表面上的毛发等污物，两翼密度大不易透风，风(高速气流)更易沿着两翼的最外端向V形中段流动，从而将毛发从两侧往中段推送，中段密度小、阻力小、更靠近出风口，更易透风，从而使聚集到中段的毛发更易随风离开中段，迅速飞入出风口。
优选地，本发明提供的地刷还包括：滚刷组件，可拆卸地安装在容纳腔中，包括可转动的滚体和安装在该滚体上的至少两组刷条单元；其中，刷条单元呈八字形，具有从滚体左右两端向中部延伸且滚体轴向上间距逐渐收紧、最终形成收紧口的两翼；并且沿滚体的转动方向，至少有一组刷条单元的收紧口沿滚体的转动方向看与其他刷条单元的收紧口为相互交错分布；滚体每转动一周，任意一组刷条单元的收紧口的转动轨迹都被另外一组或者多组刷条单元的两翼的转动轨迹全覆盖。通过这样的结构设置，一方面，使得滚刷组件的每个转动周期(周向上转动一整圈)都稳定，不会存在任何空缺处，并且与滚刷组件长度方向对应的待清洁表面都会接触到刷条单元，被刷条单元清扫，清扫轨迹完整，污物残留少；另一方面，收紧口处气流速快，使得中心毛发被飞快吸走，高速气流导致负压，吸引两侧毛发，使得毛发等污物更容易从刷条单元的两端抵达中段/收紧口，并且更易随气流从收紧口进入出风口。
进一步，本实用新型提供的地刷中，至少有一组所述刷条单元的所述收紧口的中心偏离所述刷条长度方向上的中心一定距离，并且所述收紧口的转动轨迹经过所述防扰流区域。这样毛发等污物会更为容易从刷条单元的两端抵达中段/收紧口，并且更容易随气流从收紧口进入出风口。
进一步，本实用新型提供的地刷中，至少有一组所述刷条单元的所述收紧口的中心位于所述刷条长度方向上的中心处，并且该收紧口的转动轨迹经过所述空间A。这样毛发等污物会更为容易从刷条单元的两端抵达中段/收紧口，并且更容易随气流从收紧口进入出风口。
优选地，本发明提供的地刷还包括：滚刷组件，可拆卸地安装在容纳腔中，包括可转动的滚体和安装在该滚体上的至少三组刷条单元；其中，每组刷条单元均包括刷条和穿插安装该刷条的刷条基座；刷条穿插安装在刷条基座上后呈八字形，具有从滚体左右两端向中部延伸且滚体轴向上间距逐渐收紧、最终形成收紧口的两翼；收紧口的中心偏离刷条长度方向上的中心一定距离；至少三组刷条单元均采用同一种刷条安装形成，通过将至少一个刷条单元的刷条相对于其他任意一个刷条单元中刷条的相反方向进行安装使得这两组刷条的收紧口沿滚体的转动方向看完全错开。通过这样的结构设置，一方面，使得滚刷组件的每个转动周期(周向上转动一整圈)都稳定，不会存在任何空缺处，并且与滚刷组件长度方向对应的待清洁表面都会接触到刷条，被刷条清扫，清扫轨迹完整，污物残留少；另一方面，收紧口处气流速快，使得中心毛发被飞快吸走，高速气流导致负压，吸引两侧毛发，使得毛发等污物更容易从刷条的两端抵达中段/收紧口，并且更易随气流从收紧口进入出风口；另外，将同一种刷条从滚体的左右两端分别进行安装或者将刷条反向即可形成相互交错分布收紧口，零件制造、穿插、检验都更为方便。
优选地，本发明提供的地刷还包括：滚刷组件，可拆卸地安装在容纳腔中，包括可转动的滚体和安装在该滚体上的至少三组刷条单元；其中，每组刷条单元均包括刷条和穿插安装该刷条的刷条基座；刷条穿插安装在刷条基座上后呈八字形，具有从滚体左右两端向中部延伸且滚体轴向上间距逐渐收紧、最终形成收紧口的两翼；三组刷条单元是采用两种刷条安装形成，第一种刷条的收紧口位于刷条长度方向上的中心处，第二种刷条的收紧口向一侧偏离中心一定距离；滚体具有一组第一种刷条，并且具有两组第二种刷条，一组第二种刷条相对于另一组第二种刷条反向安装，这三组刷条的收紧口沿滚体的转动方向看为相互交错分布；滚体每转动一周，任意一组刷条的收紧口的转动轨迹都被另外一组或者多组刷条的两翼的转动轨迹全覆盖。通过这样的结构设置，一方面，使得滚刷组件的每个转动周期(周向上转动一整圈)都稳定转动，不会存在任何空缺处，并且与滚刷组件长度方向对应的待清洁表面都会接触到刷条，被刷条清扫，清扫轨迹完整，污物残留少；另一方面，收紧口处气流速快，使得收紧口处毛发被飞快吸走，高速气流导致负压，吸引两侧毛发，使得毛发等污物更容易从刷条的两端抵达中段/收紧口，并且更易随气流从收紧口进入出风口。
优选地，在本发明提供的地刷中，滚刷组件上刷条从根部延伸至顶部的延伸方向或刷丝的延长线，与滚体的轴线相交或者不相交；刷条两翼的厚度不小于3mm。单根刷丝的延长线与滚体的轴线不相交，使刷丝与毛发等污物接触面积更大，毛发等污物更不易被刷丝夹住。两翼的厚度不小于3mm能够使气流尽可能从两端向中部流动。
优选地，本发明提供的地刷还包括：滚刷组件，可拆卸地安装在容纳腔中，包括：可转动的滚体，凸出设置在该滚体表面的多组刷条单元，和位于滚体两端、与滚体同步转动的两个端盖；其中，刷条单元在滚体表面弧形延伸，端盖上设有弧形斜面，至少一个刷条单元的迎风侧面与一个弧形斜面顺滑连接，共同形成从端盖向滚体中部导流的导流扇叶。
<吸尘器>
进一步，本发明还提供了吸尘器，包括：吸尘器本体，具有产生负压的负压源和将负压向外传递的通风管道；地刷，与通风管道匹配连通，利用负压产生吸入气流对待清洁表面上的污物进行清洁；其中，地刷为上文<吸尘器>中所描述的地刷。基于同样的改进技术，该地刷具有与<地刷>同样的有益效果。
附图说明
图1为本发明实施例涉及的吸尘器的结构示意图；
图2为本发明实施例涉及的地刷的结构示意图一；
图3为本发明实施例涉及的地刷的结构示意图二；
图4为本发明实施例涉及的地刷去掉滚刷组件后的内部结构示意图一；
图5为本发明实施例涉及的地刷去掉滚刷组件后的内部结构示意图二；
图6为本发明实施例涉及的地刷去掉滚刷组件后的内部结构示意图三；
图7为本发明实施例涉及的滚刷组件的结构示意图；
图8为本发明实施例涉及的滚刷组件的分解图；
图9为本发明实施例涉及的滚刷组件端部的局部放大图，其中，(a)为立体图，(b)为正视图；
图10为本发明实施例涉及的地刷去掉滚刷组件和部分壳体后的结构剖视图；
图11为本发明实施例涉及的牵引部的结构示意图；
图12为本发明实施例涉及的地刷去掉滚刷组件和大部分壳体后的部分结构正视图；
图13为本发明实施例涉及的滚体和空间A与B的位置关系简图；
图14为本发明变形例一涉及的刷条的结构简示图。
图15为本发明变形例一涉及的刷条穿插安装至刷条基座后的结构示意图；
图16为本发明变形例二涉及的刷条的结构简示图；
图17为本发明变形例二涉及的刷条基座和刷条的结构示意图。
具体实施方式
以下结合附图对本发明涉及的地刷与吸尘器的具体实施方案进行详细地说明。
<实施例>
如图1所示，吸尘器1000包括吸尘器本体10和地刷20。本实施例中，吸尘器1000为无线吸尘器，能够利用负压吸取容纳待清洁表面的灰尘、毛发等污物。
吸尘器本体10具有负压源、通风管道11和集尘机构。负压源能够产生负压，通风管道11将负压向外传递至待清洁表面，集尘机构用于收集通过通风管道11进入的污物。
地刷20直接或通过延长管间接与通风管道11匹配连通，利用负压产生吸入气流对待清洁表面上的污物进行清洁。如图3～5和10所示，地刷20包括地刷主体21、容纳腔22、滚刷组件23、出风管24、牵引部25。
地刷主体21包括壳体211和驱动部(图中未显示)。驱动部设置在壳体211内，并与滚刷组件23相连，包括驱动滚刷组件23围绕长度方向(轴向)进行高速转动的驱动电机和连接驱动电机与滚刷组件23的皮带。
容纳腔22位于壳体211内的独立空腔，用于容纳滚刷组件23，为与滚刷组件23轴向和周向所对应的地刷主体21内表面所围成，并且底部具有朝向待清洁表面的清洁开口221。
如图3和7所示，滚刷组件23可拆卸地安装在容纳腔22中，长度方向与容纳腔22相同、与清洁开口221相同，它包括滚体231、三组刷条单元232、两个端盖233。
滚体231与驱动电机通过皮带相连，能够绕轴向进行高速旋转，转速一般为2000～3000r/min。
如图7～8所示，三组刷条单元232沿着周向均匀安装在滚体231的表面，呈V形，与滚体231同步转动。相邻刷条单元232间隔120°。每组刷条单元232均包括刷条基座232a和刷条232b。刷条基座232a凸出固定在滚体231表面，刷条基座232a内设有从滚体的左端至右端连续延伸的开口槽；由于刷条基座232a从滚体231表面凸起，刷条基座232a本身也形成将空气推送向刷条尖端的导流结构。刷条232b可以是在条状结构上种植有刷丝的结构，也可以是无刷丝而是橡胶/塑料条等条、片装结构；本实施例中，以刷条232b采用种植有刷丝的条状结构为例进行说明，刷条232b为长直条，自身没有方向性，刷丝沿长度方向布设，中部设有刷丝但密度较低，穿插安装在刷条基座232a的V形开口槽中，安装后的形状与开口槽的形状一致，并且刷条232b的左右两端仅延伸至两个端盖233的内表面处。本实施例中，刷条232b安装后，沿滚刷组件23的转动方向看呈V形，具有两个翼232b-1和一个中段232b-2。两翼232b-1从滚体231左右两端向中部延伸，并且滚体231轴向上的间距逐渐收紧。中段232b-2用于连接两翼232b-1，长度不小于出风口长度的1/5；两翼232b-1的刷丝厚度或密度至少为中段232b-2的两倍，使得中段232b-2的气流比两翼232b-1更大、流速更快，风力/吸力更强。刷条单元232中单根刷丝的延长线与滚体231的轴线不相交。本实施例中，两翼232b-1的厚度为5mm左右。并且，中段232b-2位于刷条单元232的中部，刷条单元232的中部对应出风口242。刷条单元232沿着滚体231的轴向在滚体231表面弧形延伸，刷条基座232a同理也在滚体231表面弧形延伸，刷条基座232a在周向上看具有两个侧面，这两个侧面均沿着滚体231轴向弧形延伸，在刷条基座232a从清洁开口221处转动至朝向出风口242处的过程中，一个侧面为迎风面，最先被转动至朝向靠近出风口242，另一个侧面为背风面位于刷条232b的背面，最后被转动至靠近出风口242。
两个端盖233分别位于滚体231两端，与滚体231同步转动，并且包覆刷条单元232的刷条基座232a，封闭刷条基座232a开口槽。如图9所示，每个端盖233上均设有弧形斜面233a-1，至少一个刷条单元232的迎风侧面与一个弧形斜面233a-1顺滑连接，共同形成从端盖233向滚体231中部导流的导流扇叶。具体地，将端盖233的外周面上靠近刷条单元232的区域作为扇叶形成区域，扇叶形成区域具有三个凸叶单元233a和三个连接凸叶单元的连接单元233b。每个凸叶单元233a均对应设置在一组刷条单元232端部的外表面(旋转周向上的外表面)上，连接单元233b设置在位于刷条单元232之间的滚体231单元上。在滚体231的长度方向上，凸叶单元233a具有从外边缘E1(距离滚体231中部更远的边缘)向内边缘E2(距离滚体中部更近的边缘)延伸并朝向位于该凸叶单元下方的刷条单元232侧面倾斜延伸且逐渐靠近的侧面，该侧面为弧形斜面233a-1，与刷条基座232a弧形顺畅连接并同步转动，使该圆弧面面作为从端部向中部导流的扇叶233a-1；扇叶233a-1和刷条基座232a的倾斜延伸方向均为从滚体231的端部向中部方向倾斜。通过这样的设计，扇叶233a-1能够推挤和引导空气从极左/极右端部向中部流动，加上刷条中部的大风量、高风速和强劲吸力，从而使毛发更易移动至中部并快速进入出风口。扇叶233a-1配合刷条基座232a不仅能够使极左/极右的毛发被气流向中部推送，还能够将毛发推离刷条232b，并使毛发在高于刷条232b尖端(比刷条尖端到滚体表面的距离更大)的气垫中积极聚中，在周向和轴向上都被拉扯远离，毛发难以环绕两侧刷丝首尾相接。刷条232b尖端即为刷条232b转动轨迹径向上的最外端。如图4～6和10所示，出风管24的外端部241与通风管道11匹配连通，出风管24的内表面从容纳腔22外壁至容纳腔22内壁，厚度方向上完全贯穿容纳腔22(单侧贯穿)，并在容纳腔22内壁形成朝向滚刷组件23、并且与该滚刷组件23相邻的出风口242，将负压导向容纳腔22，从而形成从清洁开口至出风口242的高速气流。关于出风管24贯穿容纳腔22，若贯穿处对应的容纳腔22内壁为一部分朝向滚刷组件23凸出，另一部分相对凹陷的结构，则出风口242是贯穿凸出部分后形成，即、出风口242是形成在容纳腔22最靠近滚刷组件23的内表面上，且出风口242与滚刷组件23之间无任何其他结构阻挡。出风管24的内表面贯穿后可以与容纳腔22内壁平滑连接，即、出风口242与容纳腔22内壁连接处倒圆角，形成向外逐渐扩大的喇叭形过渡结构。
如图4～6和11所示，牵引部25设置在容纳腔22中，用于牵引毛发脱离滚刷组件23。牵引部25包括沿着滚刷组件23的轴向间隔设置，并且齿尖指向滚刷组件23的上、下两排牵引齿251和252，在滚刷组件23的转动方向上看各排牵引齿251和252之间相互不交错。
如图10和12～13所示，本实施例中出风管24的贯穿方向F1(图10中虚线箭头)为水平方向，沿着贯穿方向进行正投影，出风管24内表面的正投影为圆形，出风口242的边缘正投影也为圆形。将容纳腔22中，从出风口242的边缘(图10中P1和P2为上下边缘点)，沿着出风管24的贯穿方向F1延伸至滚刷组件23的滚体231表面的空间区域记为空间A(对应图13中P1和P2之间的圆柱体区域)，保持空间A的位置不变，横截面积等比例放大60％得到空间B作为防扰流区域B(对应图10中P3和P4之间的圆柱体区域)，牵引部25形成在防扰流区域B外。另外，当出风口242的边缘正投影不是圆形，而是矩形等其他形状，则空间A和空间B的横截面也为相应的形状。
本实施例中，将出风口242的最低点P2与最高点P1的最短距离(即、垂直距离＝高度方向上的直径)作为出风口的开口高度，基于开口高度将出风口三等分为下部、中部、上部，一排主牵引齿251形成在出风口242中部的左右两侧，一排辅牵引齿252形成在出风口242上部的左右两侧。本实施例中，牵引齿均从尖端到根部纵向(上下方向)截面积逐渐增大。主牵引齿251的形状为从尖端到根部纵向截面呈直角三角形，辅牵引齿252的形状为从尖端到根部横向(前后方向)截面呈梯形。
基于以上结构，本实施例所提供的吸尘器1000的具体工作过程为：
用户开启吸尘器1000，负压源和驱动电机随之开启，负压源产生负压，并由通风管道11和出风管24将负压传递至地刷20容纳腔22中，再通过容纳腔22清洁开口221传递至待清洁表面，形成吸入气流。这里以待清洁表面为地面，污物为毛发为例进行说明。
与此同时，驱动电机带动滚刷组件23高速转动，刷条持续拍打摩擦地面，促使毛发从地面松动脱离，随滚刷组件23从清洁开口221向上转动。在此过程中，位于滚刷组件23中部的毛发先端被转动至防扰流区域B，毛发先端受到高速、大流量气流产生的强劲风力被全力拉扯向出风口242(无法乱摆)，并带动毛发的后续部分快速脱离滚刷组件23，随风进入出风口242，进而进入通风管道11，最终被集尘机构收集。
位于滚刷组件23左部、右部(含极左、极右端)的毛发，由于离出风口242较远，阻碍多、气流量小、风力小，会在风中剧烈摇摆，毛发先端被滚刷组件23向上甩动的过程中，迅速靠近并缠绕主牵引齿251(类似鞭子缠绕陀螺)，从而使主牵引齿251牵引并拉住毛发先端，毛发先端缠绕主牵引齿251上时，也受到主牵引齿251的反向拉力，阻止毛发先端与毛发主体(毛发后续部分)汇合进而缠绕滚刷组件23，进一步随着滚刷组件23的转动毛发主体被先端牵引着脱离滚刷组件23，由于毛发主体处风力大，因此会先随风进入防扰流区域进而进入出风口，然后反过来借由出风口处的大风力拉扯毛发先端从主牵引齿251上解散，使得毛发先端和主体部分都随风进入出风口，进而流入集尘机构。
例如，特殊情况下，当主牵引齿251上已经缠绕毛发，导致滚刷组件23上剩余毛发没有位置缠绕主牵引齿251时，则剩余毛先端则会随着滚刷组件23被转动至辅牵引齿252处，总有机会缠绕辅牵引齿252，然后基于与主牵引齿251相似的过程，毛发先端和主体部分都被拉扯离滚刷组件23，并随风进入集尘机构。
同时，在滚刷组件23转动过程中，端盖233的弧形斜面233a-1和刷条单元232及其中段232b-2的设置使得：端部气流向上并沿着两翼232b-1的最外端向V形中段232b-2流动，将毛发从下往上并从两侧往中段推送，聚集到中段的毛发被转动至防扰流区域B进而迅速随强劲风力进入出风口242。
在以上实施例中，刷条没有任何缺口，单独一根刷条随滚体转动一周，在滚体长度方向上与清洁表面摩擦轨迹连续。为了加快刷条中部气流速和流量，使得中部毛发更迅速地被吸走，从而提升中部负压和吸力，让中部可以更好地吸引两侧毛发，还可以在刷条上开设缺口，具体详见下文变形例。
<变形例一>
本变形例一中，仅针对与实施例相区别的结构进行重点描述，对于所提及的与实施例相同的结构，给予相同的符号，并省略相同的说明。
如图14所示，三组(个)刷条分为两种232bI1和232bI2，各刷条自身连续平直，没有方向性，并且都开设有矩形的缺口。第一种刷条232bI1为1个，其缺口232bI1-2的中心(对称中心)位于该刷条232bI1长度方向上的中心处；第二种刷条232bI2为两个，并且缺口232bI2-2的中心均向左侧偏离刷条232bI1中心(图中点划线)一定距离，本变形例中，该偏离距离为缺口232bI1-2长度的1.5倍，缺口232bI1-2的长度为10mm。
如图15所示，将三个刷条收紧口朝上分别穿插安装在三个刷条基座232a的V形开口槽中，安装后呈八字形。每种刷条232bI都具有从滚体左右两端向中部延伸且滚体轴向上间距逐渐收紧、最终形成收紧口(对应缺口)232bII-2的两翼。图15中两个第二种刷条232bI2的安装方式为：第一个(最上方)刷条232bI2按照图14中方向正向穿插安装在刷条基座232a中，第二个(中间)刷条232bI2按照与第一个刷条232bI2相反的方向(图14中左右调转/水平旋转180°)穿插安装在刷条基座232a中，从而在滚体231上形成图15中第一和第二个刷条上两个收紧口相互错开的左、右两种不同开口位置。这三个刷条232bI的收紧口沿滚体231的转动方向看为相互交错分布；滚体231每转动一周，任意一个刷条的收紧口的转动轨迹都被另外一个或者两个刷条的两翼的转动轨迹全覆盖。
通过这样的结构设置，能够有效提升收紧口处气体流速和流量，使得中心毛发飞快吸走，而且高速气流导致负压增大，更容易吸引两侧毛发，并切实提升防缠绕效果和毛发清理效果；而且，滚刷组件23的每个转动周期(周向上转动一整圈)都稳定转动，不会存在任何空缺处，与滚刷组件23长度方向对应的待清洁表面都会接触到刷条，被刷条23清扫，清扫轨迹完整，污物残留少。
更佳的方案为：当第一种刷条232bI1转动至朝向出风口时，收紧口232bI1-2正对出风口；当两个第二种刷条232bI2分别转动至朝向出风口时，收紧口232bI2-2都位于防扰流区域B内。
<变形例二>
本变形例二中，仅针对与实施例相区别的结构进行重点描述，对于所提及的与实施例相同的结构，给予相同的符号，并省略相同的说明。
如图16和17所示，三组(个)刷条为结构和尺寸都完全相同的同一种刷条232bII，刷条232bII自身连续平直，没有方向性，并且开设有矩形的缺口。将三个刷条232bII分别穿插安装在刷条基座232a的V型开口槽中，安装后呈八字形，具有从滚体231左右两端向中部延伸且滚体231轴向上间距逐渐收紧、最终形成收紧口232bII-2的两翼232bII-1。收紧口232bII-2的中心偏离刷条232bII中心一定距离，本变形例中收紧口232bII-2长度是10mm，收紧口232bII-2为从刷条232bII中心(图16中点划线)左侧开始向左延伸10mm。
图17中三个刷条232bII的安装方式为：第一个(最上方)和第三个(最下方)刷条232bII按照图16中方向正向穿插安装在刷条基座232a中，第二个(中间)刷条232bII按照相反的方向(图16中左右调转/水平旋转180°)穿插安装在刷条基座232a中，从而在滚体231上形成图17中第二个刷条上的收紧口相对其他任意刷条收紧口错开的开口位置。例如，穿插时，第一个刷条232bII右侧先进开口槽的左侧，收紧口232bII-2在中心偏左，第二个刷条232bII调转方向左侧先进开口槽的左侧，则收紧口232bII-2在中心偏右，第三个刷条232bII与第一个刷条232bII进入方式一样。沿滚体231的转动方向看，第一或第三和第二刷条232bII的收紧口232bII-2相对于刷条232bII的中心线对称分布，且收紧口232bII-2完全错开(无任何重叠)。这样滚体231每转动一周，第二个刷条232bII的收紧口232bII-2的转动轨迹都被第一或第三刷条232bI的两翼的转动轨迹全覆盖。
这样采用相同的三个刷条232bII，在同一位置开口，只在穿插时将一个刷条232bII相对于其他两个按照相反方位安装，通过简单的结构和巧妙的安装方式即可在刷条基座上形成不同收紧口232bII-2位置，并且三个收紧口232bII-2形成了通畅的中心之字形风路，能够有效提升收紧口232bII-2处气体流速和流量，使得中心毛发飞快吸走，而且高速气流导致负压增大，更容易吸引两侧毛发，并提升防缠绕效果和毛发清理效果；进一步，使得滚刷组件23的每个转动周期(周向上转动一整圈)都稳定，并且与滚刷组件23长度方向对应的待清洁表面都会接触到刷条232bII，被刷条清扫，清扫轨迹完整。穿好刷条232bII之后双手夹住滚体231缓慢旋转一圈，就能看到缺口是否错开，零件制造，穿插，检验，都比左右分体的刷条232bII方便。
更佳的方案为：当三个刷条232bII分别转动至朝向出风口时，收紧口232bII2-2都位于防扰流区域B内。
以上实施例和变形例仅仅是对本发明技术方案所做的举例说明。本发明所涉及的吸尘器与吸尘系统并不仅仅限定于在以上实施例中所描述的内容，而是以权利要求所限定的范围为准。本发明所属领域技术人员在该实施例的基础上所做的任何修改或补充或等效替换，都在本发明的权利要求所要求保护的范围内。
例如，本发明中，刷条还可以采用橡胶条、塑料条等无刷丝的结构，这种情况下，八字形或V形刷条的两翼没有刷丝，而是由橡胶/塑料条形成。另外，以上实施例和变形例中都是以三组刷条单元/刷条为例进行说明，且三组形状基本类似，但本发明刷条单元/刷条数量不限于此。例如，可以采用更少或者更多的刷条单元/刷条。此外，本发明还可以采用其他不同形状的刷条单元/刷条形成在滚体上，并且刷条单元/刷条还可以不用从滚体的左端连续延伸至右端，而是一些刷条单元/刷条仅形成在滚体左，一些仅形成在右侧，或者一些仅形成在滚体中间。而且这些刷条可以全是刷丝结构，或者全是无刷丝的结构，还可以既存在刷丝结构又存在无刷丝的结构。

Claims (10)

  1. 地刷，与吸尘器的通风管道匹配连通，利用吸尘器的负压产生吸入气流对待清洁表面上的污物进行清洁，其特征在于，包括：
    地刷主体；
    容纳腔，位于所述地刷主体内，用于容纳滚刷组件，底部具有朝向所述待清洁表面的清洁开口；
    出风管，外端部与所述通风管道匹配连通，所述出风管从外至内贯穿所述容纳腔并在所述容纳腔内壁形成朝向所述滚刷组件、并且与该滚刷组件相邻的出风口，将所述负压导向所述容纳腔，从而形成从所述清洁开口至所述出风口的高速气流；
    牵引部，设置在所述容纳腔中，用于牵引毛发脱离所述滚刷组件，包括：沿着所述滚刷组件的轴向间隔设置且齿尖指向所述滚刷组件的至少一排牵引齿；
    其中，将所述容纳腔中，从所述出风口的边缘，沿着所述出风管的贯穿方向延伸至所述滚刷组件的滚体表面的空间区域记为空间A，保持空间A的位置不变，将其横截面积等比例放大至少50％得到空间B作为防扰流区域，所述牵引部形成在所述防扰流区域外，并且所述出风口左右两侧均形成有所述牵引齿。
  2. 根据权利要求1所述的地刷，其特征在于：
    其中，所述牵引部包括：形成在所述出风口左右两侧的至少一排主牵引齿，和沿着所述滚刷组件的转动方向与所述主牵引齿相隔一定距离形成的多排辅牵引齿；
    各排牵引齿之间相互不交错。
  3. 根据权利要求2所述的地刷，其特征在于：
    其中，将所述出风口的最低点与最高点的最短距离作为出风口的开口高度，基于开口高度将出风口从上至下分为下部、中部、上部，所述主牵引齿形成在所述出风口中部的左右两侧。
  4. 根据权利要求1所述的地刷，其特征在于：
    其中，空间B的横截面积比空间A大60％。
  5. 根据权利要求1所述的地刷，其特征在于，还包括：
    滚刷组件，可拆卸地安装在所述容纳腔中，包括可转动的滚体和安装在该滚体上的多组刷条；
    其中，所述刷条被设置为：迎所述滚刷组件的转动方向看呈V形，具有从滚体左右两端向中部延伸且滚体轴向上间距逐渐收紧的两翼和连接两翼的中段；所述两翼的刷丝厚度或密度不小于所述中段的两倍。
  6. 根据权利要求1所述的地刷，其特征在于，还包括：
    滚刷组件，可拆卸地安装在所述容纳腔中，包括可转动的滚体和安装在该滚体上的至少两组刷条单元；
    其中，所述刷条单元呈八字形，具有从滚体左右两端向中部延伸且滚体轴向上间距逐渐收紧、最终形成收紧口的两翼；并且沿所述滚体的转动方向，至少有一组刷条单元的收紧口沿所述滚体的转动方向看与其他刷条单元的收紧口为相互交错分布；所述滚体每转动一周，任意一组刷条单元的收紧口的转动轨迹都被其余刷条单元的两翼的转动轨迹全覆盖。
  7. 根据权利要求6所述的地刷，其特征在于：
    其中，至少一组所述刷条单元的所述收紧口的中心偏离所述刷条长度方向上的中心一定距离，并且所述收紧口的转动轨迹经过所述防扰流区域。
  8. 根据权利要求6所述的地刷，其特征在于：
    其中，至少一组所述刷条单元的所述收紧口的中心位于所述刷条长度方向上的中心处，并且该收紧口的转动轨迹经过所述空间A。
  9. 根据权利要求1所述的地刷，其特征在于，还包括：
    滚刷组件，可拆卸地安装在所述容纳腔中，包括：可转动的滚体，凸出设置在该滚体表面的多组刷条单元，和位于所述滚体两端、与所述滚体同步转动的两个端盖；
    其中，所述刷条单元在所述滚体表面弧形延伸，所述端盖上设有弧形斜面，至少一个所述刷条单元的迎风侧面与一个所述弧形斜面顺滑连接，共同形成从所述端盖向所述滚体中部导流的导流扇叶。
  10. 吸尘器，其特征在于，包括：
    吸尘器本体，具有产生负压的负压源和将负压向外传递的通风管道；
    地刷，与所述通风管道匹配连通，利用所述负压产生吸入气流对待清洁表面上的污物进行清洁；
    其中，所述地刷为权利要求1～9中任意一项所述的地刷。
PCT/CN2025/094847 2024-06-28 2025-05-14 地刷与吸尘器 Pending WO2026001397A1 (zh)

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