WO2023138122A1 - 一种表面清洁装置 - Google Patents

一种表面清洁装置 Download PDF

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Publication number
WO2023138122A1
WO2023138122A1 PCT/CN2022/125807 CN2022125807W WO2023138122A1 WO 2023138122 A1 WO2023138122 A1 WO 2023138122A1 CN 2022125807 W CN2022125807 W CN 2022125807W WO 2023138122 A1 WO2023138122 A1 WO 2023138122A1
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WO
WIPO (PCT)
Prior art keywords
support wheel
cleaning roller
auxiliary support
wheel
ground
Prior art date
Application number
PCT/CN2022/125807
Other languages
English (en)
French (fr)
Inventor
朱泽春
崔卫民
朱广
Original Assignee
尚科宁家(中国)科技有限公司
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
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Application filed by 尚科宁家(中国)科技有限公司 filed Critical 尚科宁家(中国)科技有限公司
Publication of WO2023138122A1 publication Critical patent/WO2023138122A1/zh

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    • 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
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • 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
    • 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
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4041—Roll shaped surface treating tools
    • 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
    • A47L11/4075—Handles; 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
    • 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
    • A47L11/4094—Accessories to be used in combination with conventional vacuum-cleaning devices
    • 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
    • A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation

Definitions

  • the invention relates to the technical field of cleaning equipment, in particular to a surface cleaning device.
  • the floor mopping machine is a common cleaning equipment.
  • the cleaning head of the floor mopping machine is equipped with a cleaning roller and a motor for driving the cleaning roller.
  • the motor drives the cleaning roller to rotate so that the cleaning roller wipes the surface to be cleaned to achieve the purpose of cleaning.
  • the present invention provides an easy-to-use surface cleaning device, which can effectively improve user experience.
  • the surface cleaning device includes a ground brush and a body that are hinged to each other.
  • the ground brush is provided with a main supporting wheel, an auxiliary supporting wheel, a ground scraping strip, a cleaning roller and an installation cavity for accommodating the cleaning roller.
  • the auxiliary supporting wheel is arranged between the main supporting wheel and the cleaning roller, and the ground scraping strip is arranged between the auxiliary supporting wheel and the cleaning roller.
  • the auxiliary support wheel can move up and down relative to the ground brush, wherein the vertical movement distance of the auxiliary support wheel is smaller than the radius of the auxiliary support wheel.
  • the auxiliary support wheel can move left and right relative to the ground brush.
  • each auxiliary support wheel is located on the line connecting the corresponding main support wheel and the corresponding end of the cleaning roller.
  • the ground brush is provided with a board member, and the ground scraping strip and the auxiliary support wheel are both arranged on the board member, so that the ground scraping strip, auxiliary support wheel and board member can be installed on the ground brush as an integral unit.
  • the center of the main support wheel is higher than the center of the auxiliary support wheel so that the back of the ground brush is high and the front is low.
  • the center of the main support wheel and the center of the auxiliary support wheel form a slope, and the slope angle relative to the bottom surface of the ground brush is 5°-20°.
  • the floor brush is provided with a dirt suction port between the auxiliary support wheel and the cleaning roller, the floor scraper is arranged below the dirt suction port, and the bottom edge of the floor scraper is lower than the support surface formed by the main support wheel and the auxiliary support wheel.
  • the ground brush includes a casing and a cover provided on the casing.
  • the casing is provided with a dirt suction port between the auxiliary support wheel and the cleaning roller and a flexible ground scraper strip.
  • the ground scraper strip is arranged below the sewage suction port and is inclined to the dirt suction port.
  • the front side of the cover is provided with a baffle located above the ground scraper, and the vertical projection of the baffle falls into the floor scraper strip.
  • the ground brush includes a casing and a cover provided on the casing.
  • the casing is provided with a dirt suction port between the auxiliary support wheel and the cleaning roller, a flexible floor scraper, and a roller scraper that interferes with the surface of the cleaning roller.
  • the floor scraper is arranged below the dirt suction port and is inclined toward the dirt suction port. The projection of the roller scraper on the horizontal plane falls into the floor scraper.
  • the fuselage includes a gripping portion at the top, a fuselage portion at the bottom, and a rod body connecting the two, and the total height of the rod body and the gripping portion is 0.2-0.7 of the height of the fuselage portion.
  • a forward frictional traction force is formed.
  • the frictional traction force can play an auxiliary traction role when the user pushes the device forward, which helps to reasonably reduce the force applied by the user when pushing the device forward, makes the operation more labor-saving, and effectively improves the user experience.
  • the distance between the auxiliary support wheel and the cleaning roller is smaller than the distance between it and the main support wheel.
  • the front side of the floor brush is tilted upwards with the main support wheel as a fulcrum, which effectively reduces the friction between the bristles of the cleaning roller and the surface to be cleaned, thereby reducing the hindrance caused by the cleaning roller to the floor brush.
  • Fig. 1 is a complete machine diagram in embodiment one
  • Fig. 2 is the explosion diagram of ground brush in embodiment one;
  • Fig. 3 is a partial structural diagram of the ground brush in Embodiment 1;
  • Fig. 4 is a cross-sectional view of the ground brush in the first embodiment along the front-to-back direction;
  • Fig. 5 is the enlarged view of place A in Fig. 4;
  • Fig. 6 is the schematic diagram of the sectional structure of the ground brush in embodiment two;
  • Fig. 7 is the axonometric view of the surface cleaning device in the fourth embodiment.
  • Fig. 8 is the schematic diagram of the bottom of ground brush in embodiment four;
  • Fig. 9 is a schematic structural view of a part of the brush in Embodiment 4.
  • Fig. 10 is a schematic structural view of the auxiliary support wheel in Embodiment 4.
  • Fig. 11 is a schematic diagram of the structure of the auxiliary support wheel in the fourth embodiment when it encounters a protrusion
  • Fig. 12 is a simplified schematic diagram of the outline of the bottom of the ground brush in the fourth embodiment.
  • the surface cleaning device provided by Embodiment 1 of the present invention includes a floor brush 100 and a handle bar 200 rotatably arranged on the floor brush 100.
  • the floor brush 100 includes a main support wheel 110 located at the rear end, a cleaning roller 120 driven by a motor 130 at the front end, an auxiliary support wheel 140 located between the main support wheel 110 and the cleaning roller 120, and an installation cavity 150 for installing the cleaning roller 120, the end of the installation cavity 150
  • the distance between the center of the rotating shaft 160 and the top side of the installation cavity 150 is greater than the distance between it and the surface to be cleaned, so that the bristles of the cleaning roller 120 are exposed downward on the bottom surface of the ground brush 100 and form forward frictional traction with the surface to be cleaned.
  • the central axis of rotation O-O' of the auxiliary support wheel is substantially parallel to the central axis of rotation of the cleaning roller, and the auxiliary support wheel can slide left and right relative to the central axis of rotation O-O'.
  • the distance between the auxiliary support wheel 140 and the cleaning roller 120 is less than the distance between it and the main support wheel 110, so that the main support wheel 110 forms a fulcrum when the ground brush 100 retreats to reduce the friction between the bristles of the cleaning roller 120 and the surface to be cleaned.
  • the cleaning roller 120 is arranged on the front side of the ground brush 100
  • the main supporting wheel 110 is arranged on the rear side of the ground brush 100
  • the auxiliary supporting wheel 14 is arranged between the cleaning roller 120 and the main supporting wheel 110.
  • the bottom end of the handle bar 200 is pivotally connected to the rear side of the floor brush 100 , and the handle bar 200 can swing up and down at a certain angle relative to the floor brush 100 .
  • the floor brush 100 includes a casing 171 and a cover 172 fixed together.
  • the front side of the cover 172 is provided with a front cover 173 fixed with the casing 171 .
  • the installation cavity 150 is formed by the cooperation of the casing 171 and the front cover 173 .
  • the cleaning roller 120 is placed horizontally in the installation cavity 150 and arranged axially along the left and right directions.
  • the motor 130 is arranged inside the ground brush 100.
  • Two rotating shafts 160 are provided and are rotatably arranged at the left and right ends of the installation cavity 150 respectively.
  • the two rotating shafts 160 are inserted in the two axial ends of the cleaning roller 120 respectively.
  • the cleaning roller 120 rotates, so that the cleaning roller 120 wipes the surface to be cleaned.
  • the auxiliary support wheel that can slide left and right between the cleaning roller and the main support wheel, when the surface cleaning device is pushed and pulled back and forth to clean the surface to be cleaned, when the auxiliary support wheel is in contact with the protrusion on the surface to be cleaned, the auxiliary support wheel can slide left and right relative to the ground brush under the collision of the protrusion, so that the auxiliary support wheel can move a certain distance in the axial direction and deviate from the position of the protrusion, so that the auxiliary support wheel can move to a relatively flat surface to be cleaned, reduce the blocking force of the protrusion on the auxiliary support wheel, and facilitate the user to push and pull back and forth.
  • Surface cleaning device by setting the auxiliary support wheel that can slide left and right between the cleaning roller and the main support wheel, when the surface cleaning device is pushed and pulled back and forth to clean the surface to be cleaned, when the auxiliary support wheel is in contact with the protrusion on the surface to be cleaned, the auxiliary support wheel can slide left and right relative to the ground brush under the collision of
  • the center of the rotating shaft 160 is at the same height as the center of the cleaning roller 120
  • the point D1 is the center point of the cleaning roller 120 and the rotating shaft 160
  • the distance between the center of the rotating shaft 160 and the top side of the installation cavity 150 is the height difference H1 between the center point D1 of the cleaning roller 120 and the inner top wall of the front cover 173
  • the distance between the center of the rotating shaft 160 and the surface to be cleaned is the distance between the center point D1 of the cleaning roller 120 and the surface P1 to be cleaned
  • the height difference H2, H1>H2 the bristles of the cleaning roller 120 interfere with the surface P1 to be cleaned.
  • the device moves forward, and the motor 130 drives the cleaning roller 120 to rotate clockwise through the transmission mechanism 180 and the rotating shaft 160.
  • a forward frictional traction force is generated between the cleaning roller 120 and the surface to be cleaned. Through this frictional traction force, the user's force to push the device forward can be appropriately reduced, making the operation more labor-saving.
  • point D1 is the center point of cleaning roller 120
  • point D2 is the center point of auxiliary support wheel 140
  • point D3 is the center point of main support wheel 110
  • the distance between auxiliary support wheel 140 and cleaning roller 120 refers to the horizontal distance L1 between point D1 and point D2
  • the distance between auxiliary support wheel 140 and main support wheel 110 refers to the horizontal distance L2 between point D2 and point D3, L1 ⁇ L2.
  • the front side of the floor brush 100 tends to tilt upwards with the point D3 as the fulcrum, reducing the amount of interference contact between the cleaning roller 120 and the surface to be cleaned P1, thereby reducing the friction between the bristles of the cleaning roller 120 and the surface to be cleaned, and making the operation of pulling back the device more labor-saving.
  • the auxiliary support wheel can move up and down relative to the floor brush to maintain a substantially constant contact area between the cleaning roller and the surface to be cleaned, wherein the vertical movement distance of the auxiliary support wheel is less than 5mm.
  • the vertical movement distance of the auxiliary support wheel is smaller than its own radius.
  • the auxiliary support wheel By arranging an auxiliary support wheel that can move up and down between the cleaning roller and the main support wheel, when the surface cleaning device cleans the surface to be cleaned, when the auxiliary support wheel contacts the protrusion on the surface to be cleaned, the auxiliary support wheel can move upwards relative to the ground brush under the pressure of the protrusion, and then make the ground brush close to the surface to be cleaned, effectively reducing the situation that the cleaning roller is out of contact with the cleaning surface caused by the lifting of the ground brush, thereby ensuring that the contact area between the cleaning roller and the surface to be cleaned can be kept approximately constant when it is on a flat surface to be cleaned and when encountering a protrusion, reducing the cleaning roller areas that cannot be cleaned, thus improving the cleaning effect of surface cleaning devices.
  • the auxiliary support wheel By making the auxiliary support wheel move up and down less than its own radius, when the surface cleaning device encounters a protrusion with a higher height, after the cleaning roller passes over the raised surface to be cleaned, the auxiliary support wheel can contact the raised surface to be cleaned, and the auxiliary support wheel will not be completely pressed into the interior, and then keep rolling contact with the raised surface to be cleaned. Most of them are distributed on the side of the raised surface to be cleaned, and the cleaning roller is easy to contact with the surface to be cleaned, so that the surface cleaning device regains the forward power (that is, the friction between the rotating cleaning roller and the surface to be cleaned), effectively avoiding the situation that the surface cleaning device will be stuck by the raised surface to be cleaned that is higher than the bottom surface of the ground brush.
  • the forward power that is, the friction between the rotating cleaning roller and the surface to be cleaned
  • the center of the main support wheel 110 is set higher than the center of the auxiliary support wheel 140, that is, the point D3 is set higher than the point D2, so that the back of the ground brush 100 is set high and the front is low, so that the pressing force between the cleaning roller 120 and the surface to be cleaned can be appropriately increased.
  • an inclined plane P2 as shown by the dotted line in FIG.
  • the slope P2 is a plane where the axis of the main support wheel 110 and the axis of the auxiliary support wheel 140 are coplanar.
  • the bottom surface of the floor brush 100 coincides with the surface P1 to be cleaned, and the angle ⁇ between the slope P2 and the surface P1 to be cleaned is the inclination angle of the slope P2 relative to the bottom surface of the floor brush 100 .
  • the included angle ⁇ is preferably set to 13°.
  • the distance between the auxiliary supporting wheel 140 and the cleaning roller 120 should not exceed 1/3 of the length of the bottom surface of the ground brush 100 in the front-rear direction.
  • the distance between the auxiliary supporting wheel 140 and the cleaning roller 120 is the horizontal distance L1 between the point D2 and the point D1 .
  • the length of the bottom surface of the floor brush 100 in the front-to-back direction refers to the maximum length of the floor brush 100 in the front-to-back direction, such as the distance L3 shown in FIG. 3 .
  • L1 ⁇ 1/3*L3 in this embodiment, L1 is preferably set to 0.2*L3.
  • the floor brush 100 is provided with a suction port 310 between the auxiliary support wheel 140 and the cleaning roller 120, a flexible ground scraping strip 190, a water supply port 193, and a roller scraping strip 191.
  • 10 is inclined so as to reduce the frictional force between the ground scraping bar 190 and the surface to be cleaned when the ground brush 100 retreats.
  • the bottom edge of the ground scraping strip 190 is lower than the supporting surface formed by the main supporting wheel 110 and the auxiliary supporting wheel 140.
  • the support surface is a plane that is coplanar with the bottom end of the main support wheel 110 and the bottom end of the auxiliary support wheel 140 .
  • the sewage suction port 310 is formed by the casing 171, and the ground brush 100 is provided with a joint 320 located at the rear side of the sewage suction port 310 and correspondingly matched with the sewage suction port 310.
  • the handle bar 200 is provided with a sewage bucket 340 connected to the joint 320 through a pipeline 330 and a sewage suction fan 350 matched with the sewage bucket 340.
  • the sewage suction fan 350 When the sewage suction fan 350 is in operation, it flows into the sewage suction port 310 and then passes through the joint 320 and the pipeline 330.
  • the floor scraper 190 is fixed on the bottom side of the front end of the casing 171.
  • the inclination angle of the floor scraper 190 relative to the center of the sewage suction port 310 is 45°-70°, and the bottom edge of the floor scraper 190 protrudes downward relative to the support surface.
  • the height of the bottom edge of the floor scraping strip protruding downward relative to the support surface so that the floor scraping strip meets the scraping requirements. If the height of the floor scraping strip protruding downward relative to the support surface is less than 2 mm, the contact interference between the floor scraping strip and the surface to be cleaned is small, which is not conducive to effectively scraping the surface to be cleaned. If the height of the floor scraper protruding downward relative to the support surface is greater than 5 mm, the contact interference between the floor scraper and the surface to be cleaned is too large, and the bottom side of the floor scraper is easily deformed by pressure and cannot effectively scrape the surface to be cleaned.
  • the dotted line S1 represents the center line of the sewage suction port 310
  • the dotted line S2 represents the tangential direction of the front side of the floor scraper 190
  • the angle ⁇ between the dotted line S1 and the dotted line S2 is the inclination angle of the floor scraper 190 relative to the sewage suction port 310 .
  • the included angle ⁇ is preferably set to 50°.
  • the bottom edge of the floor scraping strip 190 protrudes downward relative to the supporting surface as shown in FIG. 5 as ⁇ h.
  • ⁇ h is preferably set to 3 mm.
  • the support surface formed by the main support wheel 110 and the auxiliary support wheel 140 coincides with the surface P1 to be cleaned, and ⁇ h is the amount of interference contact between the bottom edge of the floor scraper 190 and the surface to be cleaned by P1.
  • the interference contact between the floor scraper 190 and the surface P1 to be cleaned helps to improve the scraping effect of the floor scraper 190 on the surface to be cleaned when the ground brush 100 advances.
  • the handle bar 200 includes a grip portion 210 at the top, a fuselage portion 230 at the bottom, and a rod body portion 220 connecting the two.
  • the total height of the rod body portion 220 and the grip portion 210 is not greater than the height of the body portion 230 to reduce the center of gravity of the surface cleaning device.
  • the rod part 220 is fixed on the top of the body part 230
  • the grip part 210 is fixed on the top of the rod part 220
  • the bottom of the body part 230 is pivotally connected to the rear side of the floor brush 100 .
  • the height of the handle portion 210 is H3, the height of the shaft portion 220 is H4, the height of the body portion 230 is H5, and H3+H4 ⁇ H5.
  • the total height of the rod body 220 and the grip 210 is 0.2-0.7 of the height of the fuselage 230 , that is, 0.2*H5 ⁇ H3+H4 ⁇ 0.7*H5.
  • H3+H4 is preferably set to 0.5*H5.
  • the ratio of the total height of the rod body and the grip to the height of the fuselage is reasonably set to meet the grip requirements while reasonably reducing the center of gravity of the device. If the ratio is less than 0.2, the total height of the rod body and the grip part is small, which is not conducive to meeting the user's grip requirements, and the height of the fuselage part is large, which is not conducive to reasonably lowering the center of gravity of the device. If the ratio is greater than 0.7, the height of the fuselage portion is small, which is not conducive to meeting the assembly requirements of related components in the device.
  • the ground brush 100 When in use, the ground brush 100 is in contact with the surface P1 to be cleaned, and when the user pushes the device forward, the bristles of the cleaning roller 120 contact the surface P1 to generate forward frictional traction, which is beneficial to reduce the force applied by the user to push the device forward.
  • the floor scraper 190 sweeps the surface P1 to be cleaned, and the dirt between the floor scraper 190 and the cleaning roller 120 is sucked into the dirt bucket 340 under the action of the dirt suction fan 350 .
  • the ground brush 100 When the user pulls back the device, the ground brush 100 is upturned with the center point D3 of the main support wheel 110 as the fulcrum, reducing the friction between the cleaning roller 120 and the surface P1 to be cleaned, and also reducing the friction between the floor scraping strip 190 and the surface P1 to be cleaned, which is beneficial to reduce the force applied by the user when pulling back the device, making the operation more labor-saving.
  • included angle ⁇ can also be set to 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 14°, 15°, 16°, 17°, 18°, 19°, 20° and other reasonable angle values.
  • L1 can also be set to 0.05*L3, 0.1*L3, 0.15*L3, 0.18*L3, 0.21*L3, 0.25*L3, 0.3*L3, 1/3*L3 and other reasonable distances.
  • included angle ⁇ can also be set to other reasonable angle values such as 45°, 47°, 49°, 51°, 55°, 60°, 63°, 67°, 70° and the like.
  • H3+H4 can also be set to 0.2*H5, 0.3*H5, 0.4*H5, 0.45*H5, 0.55*H5, 0.6*H5, 0.65*H5, 0.7*H5 and other reasonable heights.
  • the front side of the cover is provided with a stop edge 192 above the floor scraper strip 190 , and the vertical projection of the stop edge 192 falls within the floor scraper strip 190 .
  • the floor scraper is in contact with the surface to be cleaned when the floor brush is working, and the area between the floor scraper and the cleaning roller forms a dirt suction area.
  • the cleaning roller rotates, it will also drop the dirt on the dirt suction area.
  • the dirt in the dirt suction area can be sucked into the dirt bucket through the suction port under the action of the suction fan.
  • the sprayed liquid can also wash the retaining edge to avoid dirt adsorption and accumulation on the retaining edge, resulting in mildew and odor after a long time, which is conducive to improving the internal cleanliness of the floor brush. Furthermore, when the device is self-cleaning, part of the cleaning liquid following the movement of the cleaning roller flows downward under the blocking effect of the retaining edge to flush the water spray port and the sewage suction port, which is beneficial to keep the water spray port and the sewage suction port clean.
  • the dotted line L1 indicates the vertical plane where the front side wall of the casing is located
  • the dotted line L2 indicates the vertical plane where the front side wall of the retaining edge is located.
  • the vertical projection of the retaining edge is located between the dotted line L1 and the dotted line L2, and the dotted line L1 and the dotted line L2 are located within the width range of the floor scraper strip in the front and rear directions.
  • the distance between the dotted line L1 and the dotted line L2 is preferably set to be smaller than the width of the ground wiper strip in the front-rear direction.
  • the floor scraper 190 is arranged below the sewage suction port and inclined toward the sewage suction port, and the projection of the roller scraper 191 on the horizontal plane falls within the floor scraper 190 .
  • the ground scraper is matched with the ground and the cleaning roller.
  • the dirt or sewage scraped by the roller scraper on the cleaning roller is sucked from the gap between the floor scraper and the cleaning roller to the dirt suction port, and enters the dirt suction channel through the dirt suction port, and then is transported to the dirt bucket.
  • Most of the dirt or sewage scraped by the roller scraper is sucked into the suction port. Even if a small part is splashed during the suction process, it can fall on the floor scraper, and then be sucked away from the suction port again, thus ensuring full suction and will not pollute the next cleaning.
  • the cleaning liquid sprayed from the water supply port splashes, it will be blocked by the roller scraper, and part of it will fall back to the cleaning roller to continue cleaning the cleaning roller.
  • this embodiment adjusts the labels of some structures and further explains some solutions in detail, and also makes further improvements to the foregoing embodiments, as shown in Figures 7 to 9 for details.
  • the surface cleaning device of this embodiment includes a floor brush 11 , a body 12 and a handle bar 13 .
  • the floor brush 11 is provided with a cleaning roller 111 , a main support wheel 112 and an auxiliary support wheel 113 , and a handle bar 13 is connected to the body 12 for the user to hold to control and operate the surface cleaning device.
  • the specific effect of the pivot shafts of the auxiliary support wheel 113 and the main support wheel 112 moving in the up-down direction and left-right direction of the floor brush 11 will be further elaborated.
  • 10 and 11 taking one of the auxiliary support wheels 113 as an example, the inside of the ground brush 11 is formed with an active chamber that allows the pivot shaft of the auxiliary support wheel 113 to move in the up and down direction and the left and right directions of the ground brush 11.
  • the auxiliary support wheel 113 contacts the protrusion, and the auxiliary support wheel 113 moves upward relative to the ground brush 11 due to the pressure of the protrusion, so that the ground brush 11 is close to the surface to be cleaned, thereby ensuring that the cleaning roller 111 and the suction port 114 are close to the surface to be cleaned.
  • the main support wheel 112 moves left and right, that is, the interior of the ground brush 11 forms a space that allows the pivot shaft of the main support wheel 112 to move left and right, so that the main support wheel 112 can move left and right together with the pivot shaft.
  • the left and right movement of the main supporting wheel 112 is the movement along the axial direction of the main supporting wheel 112 .
  • the distance a between the two auxiliary support wheels 113 is smaller than the axial length of the cleaning roller 111, and greater than the distance b between the two main support wheels 112.
  • the ground brush 11 is in contact with the surface to be cleaned, which is wide and narrow at the rear, making it easier to turn the ground brush 11 with the rear side as the rotation center, so that the rotation center is close to the force applied by the user, which is convenient for the user to control the surface cleaning device to turn.
  • the distance S1 between auxiliary support wheel 113 and cleaning roller 111 is less than the distance S2 between auxiliary support wheel 113 and main support wheel 112, on the one hand make auxiliary support wheel 113, cleaning roller 111 and the contact area of the surface to be cleaned close to, then make the contact of ground brush 11 and the surface to be cleaned can be regarded as having the front contact area that utilizes cleaning roller 111 and auxiliary support wheel 113 to form, and utilizes main support
  • the rear contact area formed by the wheel 112 makes it easier for the surface cleaning device to turn.
  • the auxiliary support wheel 113 can contact the raised surface to be cleaned in time, so that the front part of the brush 11 can easily pass over the raised surface.
  • the distance S3 between the auxiliary support wheel 113 and the front side of the ground brush 11 is 1/5 to 2/5 of the overall front and rear length of the ground brush 11, specifically, 1/5, 1/4, 1/3, 2/5, etc., to ensure that after the auxiliary support wheel 113 passes over the protrusion, the part of the ground brush 11 that passes over the protrusion under the action of inertia is greater than or equal to 1/2 of the entire ground brush 11.
  • the axial moving distance d of the auxiliary support wheel 113 is greater than the axial moving distance of the main supporting wheel 112, that is, the range in which the auxiliary supporting wheel 113 moves left and right relative to the ground brush 11 is greater than the range in which the main support wheel 112 moves left and right relative to the ground brush 11.
  • the left and right movement of the auxiliary supporting wheel 113 is the movement along the axial direction of the auxiliary supporting wheel 113 .
  • the left and right movement range refers to the distance between the farthest positions that the auxiliary support wheel 113 can move in the left and right direction, that is, the left dotted line in Figure 10 (where the center line is when the auxiliary support wheel 113 moves to the far left) and the right dotted line (where the center line is when the auxiliary support wheel 113 moves to the far right).
  • the axial movable range of the auxiliary supporting wheel 113 is 1-8 mm.
  • the ratio between the area enclosed by the contact point line between the main support wheel 112, the auxiliary support wheel 113 and the surface to be cleaned and the projected area of the ground brush 11 on the surface to be cleaned is 1/5 to 1/2, so as to avoid the too small support area formed and cause the surface cleaning device to be unstable.
  • main supporting wheel 112 auxiliary supporting wheel 113 and the contact point connection line of surface to be cleaned are enclosed is isosceles trapezoid, specifically, exactly wherein one main supporting wheel 112 (auxiliary supporting wheel 113) is at any position in the moving range, another main supporting wheel 112 (auxiliary supporting wheel 113) all has the position corresponding thereto, so that two main supporting wheels 112 (auxiliary supporting wheel 113) are about the center of ground brush 11 Line symmetry makes the figure surrounded by the contact points between the two main support wheels 112 and the two auxiliary support wheels 113 and the surface to be cleaned be an isosceles trapezoid. Such a structure makes the ground brush 11 more stable when it advances.
  • the base angle ⁇ of the isosceles trapezoid is between 60° and 80° to ensure that the distance between the auxiliary support wheel 113 and the main support wheel 112 will not be too small, that is, ensure that the distance between the auxiliary support wheel 113 and the cleaning roller 111 will not be too large, so that the auxiliary support wheel 113 contacts the protrusion in time after the cleaning roller 111 passes over the protrusion.
  • auxiliary support wheels 113 are respectively positioned on the connecting line of two main support wheels 112 and cleaning roller 111 two ends, specifically, take main support wheel 112 and auxiliary support wheel 113 on the right side in Fig.
  • the connecting line between the ends of the cleaning roller 111 is between two dotted lines, no matter where the auxiliary supporting wheel 113 is located in its range of motion, the auxiliary supporting wheel 113 (including the wheel body and the pivot shaft) will intersect with the two connecting lines between the above-mentioned main supporting wheel 112 and one end of the cleaning roller 111.
  • the gradually widening trend makes the movement of the surface cleaning device more stable.
  • the ground brush 11 is provided with a detachable plate member 115, and the plate member 115 is provided with a scraper 116.
  • the scraper 116 is arranged on the end of the plate member 115 close to the cleaning roller 111, so as to be located on the rear side of the cleaning roller 111.
  • the auxiliary support wheel 113 is arranged on the bottom of the plate member 115. The supporting wheel 113 can be connected with the ground brush 11 as a whole, so that it is more convenient to disassemble or replace the auxiliary supporting wheel 113 and the scraping strip 116 .
  • the user can hold the handle bar 13 to control and operate the surface cleaning device.
  • the rotating cleaning roller 111 drags and wipes the surface to be cleaned, and the vacuum motor sucks the dirt on the surface to be cleaned into the dirt collection bucket 121 through the suction port 114 .
  • the cleaning roller 111 first passes through the protrusion, and then the auxiliary support wheel 113 contacts the protrusion.
  • the auxiliary support wheel 113 will not completely retract into the ground brush 11, and can still maintain sliding contact with the protrusion.
  • the cleaning surface is in contact, so that the surface cleaning device regains its forward power (ie, the frictional force between the rotating cleaning roller 111 and the surface to be cleaned).
  • auxiliary supporting wheels of this embodiment are made of flexible materials, and the pivot shafts are fixed in the up and down direction.
  • the auxiliary support wheel is deformed under the gravity of the surface cleaning device and the extrusion of the protrusion after contacting the protrusion, thereby realizing the up and down movement of the auxiliary support wheel relative to the ground brush.
  • Embodiments 1 to 5 The difference between this embodiment and Embodiments 1 to 5 is that the way the auxiliary support wheel and the main support wheel move left and right in this embodiment is different. Specifically, the pivot shafts of the auxiliary support wheel and the main support wheel cannot move left and right relative to the ground brush, but the auxiliary support wheel and the main support wheel themselves move left and right relative to the pivot axis.
  • Embodiments 1 to 6 The difference between this embodiment and Embodiments 1 to 6 is that the main supporting wheels and the auxiliary supporting wheels of this embodiment cannot move in the left and right directions.
  • the ratio between the area surrounded by the contact point line between the main support wheel, the auxiliary support wheel and the surface to be cleaned and the projected area of the ground brush on the surface to be cleaned is 1/5 to 1/2.
  • the setting positions of the main support wheel and the auxiliary support wheel on the ground brush need to meet the above conditions.

Landscapes

  • Nozzles For Electric Vacuum Cleaners (AREA)

Abstract

一种表面清洁装置，包括相互铰接的地刷（100）和机身，地刷（100）设有主支撑轮（110）、辅支撑轮（140）、地刮条（190）、清洁辊（120）以及用于容置清洁辊（120）的安装腔（150），辅支撑轮（140）设于主支撑轮（110）与清洁辊（120）之间，地刮条（190）设于辅支撑轮（140）与清洁辊（120）之间，清洁辊（120）与待清洁表面接触以形成向前的摩擦牵引力；辅支撑轮（140）与清洁辊（120）轴线之间的间距（L1）小于辅支撑轮（140）与主支撑轮（110）轴线之间的间距（L2），以使主支撑轮（110）在地刷（100）后退时形成减小摩擦牵引力的支点。合理设置表面清洁装置的具体结构，减小用户在使用装置时需要施加的作用力，使装置的操作更加省力，有利于提高用户的使用体验。

Description

一种表面清洁装置
本申请要求于2022年1月19日递交中国专利局、申请号为202210058455.3、发明名称为“一种使用方便的表面清洁装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及清洁设备技术领域，尤其涉及一种表面清洁装置。
背景技术
近年来，一些智能的清洁设备越来越广泛的被应用于日常生活中，各类清洁设备为用户的生活带来了很大的便利。擦地机是一种常见的清洁设备，擦地机的清洁头上设置清洁辊及用于驱动清洁辊的电机，地刷工作时，电机驱动清洁辊转动使清洁辊对待清理面进行擦拭，实现清洁目的。
很多家庭普遍会采用具有凹凸纹理的地板，当表面清洁装置对这类地板进行清洁时，由于辅支撑轮为固定的，在辅支撑轮与地板上的凸起处接触时，会使辅支撑轮被凸起阻挡，从而增大用户推拉表面清洁装置时需要用的力。同理，当待清洁表面黏附有顽固的大体积异物时也可能导致异物阻挡辅支撑轮而增加用户操作力。此外，用户在使用擦地机进行清洁时需要向地刷施力以使地刷前后移动，由于地刷的部分构件在地刷前后移动时会与待清理面产生摩擦阻碍移动，用户操作时较为费劲，不利于提高使用体验。
发明内容
为了解决上述现有技术中存在的缺点和不足，本发明提供了一种使用方便的表面清洁装置，有效改善用户的使用体验。
为了实现上述技术目的，本发明提供的表面清洁装置，包括相互铰接的地刷和机身，地刷设有主支撑轮、辅支撑轮、地刮条、清洁辊以及用于容置清洁辊的安装腔，所述辅支撑轮设于所述主支撑轮与清洁辊之间，所述地刮条设于辅支撑轮与清洁辊之间，所述清洁辊与待清洁表面接触以形成向前的摩擦牵引力，辅支撑轮与所述清洁辊轴线之间的间距小于所述辅支撑轮与所述主支撑轮 轴线之间的间距，以使所述主支撑轮在所述地刷后退时作为支点，以减小摩擦牵引力。
优选的，所述辅支撑轮可相对于地刷上下活动，其中，所述辅支撑轮上下活动的距离小于所述辅支撑轮的半径。
优选的，所述辅支撑轮可相对于地刷左右移动。
优选的，所述主支撑轮和所述辅支撑轮均为两个，每个所述辅支撑轮均位于相应的所述主支撑轮与清洁辊相应一端的连线上。
优选的，所述地刷上设有板体构件，所述地刮条和辅支撑轮均设置在板体构件上，以使所述地刮条、辅支撑轮和板体构件可作为整体单元安装在所述地刷上。
优选的，所述主支撑轮的中心高于辅支撑轮的中心以使地刷后高前低设置，所述主支撑轮的中心与辅支撑轮的中心形成有斜面，斜面相对于地刷底面的倾斜角度为5°～20°。
优选的，所述地刷设有位于辅支撑轮与清洁辊之间的吸污口，地刮条设于吸污口的下方，地刮条的底边低于主支撑轮与辅支撑轮形成的支撑面。
优选的，所述地刷包括机壳及罩设于机壳上的机盖，所述机壳设有位于辅支撑轮与清洁辊之间的吸污口和柔性的地刮条，地刮条设于吸污口的下方且向吸污口倾斜，机盖的前侧设有位于地刮上方的挡沿，挡沿的竖向投影落在地刮条内。
优选的，所述地刷包括机壳及罩设于机壳上的机盖，所述机壳设有位于辅支撑轮与清洁辊之间的吸污口和柔性的地刮条以及与清洁辊表面过盈配合的辊刮条，地刮条设于吸污口的下方且向吸污口倾斜，所述辊刮条在水平面的投影落在地刮条内。
优选的，所述机身包括位于顶端的握持部、位于底端的机身部及连接两者的杆体部，所述杆体部与握持部的总高度为机身部高度的0.2～0.7。
本发明提供的表面清洁装置，清洁辊的刷毛与待清理面接触时形成向前的摩擦牵引力，该摩擦牵引力在用户向前推动装置时可以起到辅助牵引作用，有助于合理减小用户向前推动装置时施加的作用力，使操作更加省力，有效改善用户的使用体验。辅支撑轮与清洁辊的距离小于其与主支撑轮的距离，用户向后回拉装置时地刷的前侧以主支撑轮作为支点向上翘起，有效减小清洁辊的刷 毛与待清理面之间的摩擦力，从而减小清洁辊对地刷后退造成的阻碍，有利于合理减小用户向后回拉装置时施加的作用力，使操作更加省力，有效改善用户的使用体验。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请中记载的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为实施例一中整机图；
图2为实施例一中地刷的爆炸图；
图3为实施例一中地刷的部分结构图；
图4为实施例一中地刷沿前后方向的剖视图；
图5为图4中A处的放大图；
图6为实施例二中地刷剖面结构示意图；
图7是实施例四中表面清洁装置的轴测图；
图8是实施例四中地刷底部的示意图；
图9是实施例四中部分地刷的结构示意图；
图10是实施例四中辅支撑轮处的结构示意图；
图11是实施例四中辅支撑轮遇到凸起时的结构示意图；
图12是实施例四中地刷底部轮廓的简易示意图。
具体实施方式
下面结合附图和具体实施例对本发明作进一步说明。需要理解的是，下述的“上”、“下”、“左”、“右”、“纵向”、“横向”、“内”、“外”、“竖直”、“水平”、“顶”、“底”等指示方位或位置关系的词语仅基于附图所示的方位或位置关系，仅为了便于描述本发明和简化描述，而不是指示或暗示所指的装置/元件必须具有特定的方位或以特定的方位构造和操作，因此不能理解为对本发明的限制。
实施例一：
如图1至图5所示，本发明实施例一提供的表面清洁装置，包括地刷100 及可转动设于地刷100上的把手杆200，地刷100包括设于后端的主支撑轮110、设于前端由电机130驱动的清洁辊120、设于主支撑轮110与清洁辊120之间的辅支撑轮140及用于安装清洁辊120的安装腔150，安装腔150的端部设有与清洁辊120传动配合的转动轴160。转动轴160的中心与安装腔150顶侧的距离大于其与待清理面的距离，以使清洁辊120的刷毛向下外露于地刷100的底面并与待清理面之间形成向前的摩擦牵引力。所述辅支撑轮的转动中心轴O-O’与清洁辊的转动中心轴大致平行，所述辅支撑轮可相对于其转动中心轴O-O’左右滑动设置，辅支撑轮140与清洁辊120的距离小于其与主支撑轮110的距离，以使主支撑轮110在地刷100后退时形成支点减小清洁辊120的刷毛与待清理面之间的摩擦力。
具体地，主支撑轮110和辅支撑轮140分别设置有两个，清洁辊120设置在地刷100的前侧，主支撑轮110设置在地刷100的后侧，辅支撑轮14设置在清洁辊120和主支撑轮110之间。
本实施例中，把手杆200的底端与地刷100的后侧枢接在一起，把手杆200可相对于地刷100上下摆动一定角度。主支撑轮110设有两个且分别位于地刷100后部的左右两侧，辅支撑轮140设有两个且沿左右方向间隔分布于地刷100偏前部位的底侧。地刷100包括固定在一起的机壳171与机盖172，机盖172的前侧设有与机壳171固定的前盖173，安装腔150由机壳171与前盖173配合形成。清洁辊120横置于安装腔150中且轴向沿左右方向布置，电机130设于地刷100的内部，转动轴160设有两根且分别可转动设于安装腔150的左右端部，两根转动轴160分别插设于清洁辊120的两个轴向端部中，电机130的输出轴与其中一根转动轴160之间设有传动机构180，电机130通过传动机构180与转动轴160驱动清洁辊120转动，使清洁辊120对待清理面进行擦拭。
本实施例中，通过在清洁辊和主支撑轮之间设置可左右滑动的辅支撑轮，在来回往复推拉表面清洁装置对待清洁面进行清洁时，当辅支撑轮与待清洁面上的凸起接触时，辅支撑轮能够在凸起处的碰抵下相对于地刷左右滑动，使得辅支撑轮能够轴向移动一定距离而偏离凸起位置，以使辅支撑轮活动到相对平整的待清洁表面，减少凸起对于辅支撑轮的阻挡力，方便用户来回往复推拉操作表面清洁装置。
其次，结合图4，转动轴160的中心与清洁辊120的中心等高，点D1为清洁辊120和转动轴160的中心点，转动轴160中心与安装腔150顶侧之间的距离即为清洁辊120的中心点D1与前盖173的内顶壁之间的高度差H1，转动轴160的中心与待清理面之间的距离即为清洁辊120的中心点D1与待清理面P1之间的高度差H2，H1＞H2，清洁辊120的刷毛与待清理面P1过盈抵触。装置工作时，装置向前移动，电机130通过传动机构180与转动轴160驱动清洁辊120顺时针转动，清洁辊120与待清理面之间产生向前的摩擦牵引力，通过该摩擦牵引力可适当减小用户向前推动装置的作用力，使操作更加省力。
再次，结合图4，点D1为清洁辊120的中心点，点D2为辅支撑轮140的中心点，点D3为主支撑轮110的中心点，辅支撑轮140与清洁辊120的距离指点D1与点D2之间的水平距离L1，辅支撑轮140与主支撑轮110之间的距离指点D2与点D3之间的水平距离L2，L1＜L2。用户向后回拉装置时，地刷100的前侧容易以点D3为支点向上翘转，减小清洁辊120与待清理面P1之间的过盈接触量，从而减小清洁辊120的刷毛与待清理面之间的摩擦力，使向后回拉装置的操作更加省力。
进一步的，所述辅支撑轮可相对于所述地刷上下活动以使所述清洁辊与待清洁面保持大致恒定的接触面积，其中，所述辅支撑轮上下活动的距离小于5mm。优选的，辅支撑轮上下活动的距离小于自身的半径。
通过在清洁辊和主支撑轮之间设置可上下活动的辅支撑轮，在表面清洁装置对待清洁面进行清洁时，当辅支撑轮与待清洁面上的凸起接触，辅支撑轮能够在凸起处的抵压下相对于地刷向上活动，继而使得地刷靠近待清洁面，有效地减少了地刷翘起导致清洁辊与清洁面脱离接触的情形，从而保证清洁辊与待清洁面的接触面积在平整的待清洁面上时和遇到凸起时能够保持大致恒定，减少清洁辊无法清洁到的区域，进而提高表面清洁装置的清洁效果。通过使辅支撑轮上下活动的距离小于自身的半径，当表面清洁装置遇到高度较高的凸起时，在清洁辊越过凸起待清洁面后，辅支撑轮能够与凸起待清洁面接触，而且辅支撑轮不会被完全压入内部，继而与凸起待清洁面保持滚动接触，在表面清洁装置的前进惯性或者用户的轻推作用下，辅支撑轮能够轻松滚过凸起待清洁面，此时地刷的前部分越过了凸起待清洁面，使得地刷的重力大部分分布在凸起待清洁面前侧，清洁辊就容易与待清洁面接触，使得表面清洁装置重新获得前进 的动力(即转动的清洁辊与待清洁面之间的摩擦力)，有效地避免了表面清洁装置会被高于地刷底面的凸起待清洁面卡住的情况。
结合图4，主支撑轮110的中心高于辅支撑轮140的中心设置，即点D3高于点D2设置，使得地刷100后高前低设置，如此可以适当增大清洁辊120与待清理面之间的压紧力，有助于提高清洁辊120对待清理面的擦拭效果，也有助于适当增大刷毛与待清理面之间的摩擦牵引力。具体的，根据两个主支撑轮110的中心点D3及两个辅支撑轮140的中心点D2可以确定一个如图4中虚线所示的斜面P2，即主支撑轮110的中心与辅支撑轮140的中心形成有斜面P2，该斜面P2相对于地刷100底面的倾斜角度为5°～20°。实际上，该斜面P2即为主支撑轮110的轴线与辅支撑轮140的轴线共面的平面。地刷100放置在待清理面上时，地刷100的底面与待清理面P1重合，斜面P2与待清理面P1之间的夹角α即为斜面P2相对于地刷100底面的倾斜角。本实施例中，夹角α优选设置为13°。
合理设置主支撑轮中心与辅支撑轮中心形成的斜面相对于地刷底面的倾斜角度，适当增大清洁辊与待清理面之间的压紧力。如果斜面相对于地刷底面的倾斜角度小于5°，清洁辊与待清理面之间的压紧力较小，不利于提高清洁辊的擦拭效果及其与待清理面之间的摩擦牵引力。若斜面相对于地刷底面的倾斜角度大于20°，清洁辊与待清理面之间的压紧力过大，会对清洁辊的转动造成一定的阻碍。
为了使辅支撑轮140在装置工作时能稳定的支撑住地刷100的前部，辅支撑轮140与清洁辊120的距离不超过地刷100底面在前后方向上长度的1/3。结合图4，辅支撑轮140与清洁辊120之间的距离即为点D2与点D1之间的水平距离L1。地刷100底面在前后方向上的长度指地刷100在前后方向上的最大长度，如图3中所示的距离L3。L1≤1/3*L3，本实施例中，L1优选设置为0.2*L3。
结合图4、图5，地刷100设有位于辅支撑轮140与清洁辊120之间的吸污口310、柔性的地刮条190、供水口193以及辊刮条191，所述辊刮条191与清洁辊表面过盈配合以将清洁辊上的污物刮落，供水口向清洁辊提供用以擦拭地面的清洁液，地刮条190设于吸污口310的下方且向吸污口310倾斜，以便在地刷100后退时减小地刮条190与待清理面之间的摩擦力。同时，地刮条 190的底边低于主支撑轮110与辅支撑轮140形成的支撑面。其中，所述支撑面为主支撑轮110的底端与辅支撑轮140的底端共面的平面。本实施例中，吸污口310由机壳171形成，地刷100内设有位于吸污口310后侧且与吸污口310对应配合的接头320，把手杆200上设有通过管道330与接头320连接的盛污桶340及与盛污桶340配合的吸污风机350，吸污风机350工作时形成自吸污口310处流入然后经接头320和管道330流入盛污桶340内的吸污气流，地刮条190与清洁辊120之间的脏污可以在吸污气流的作用下被吸入盛污桶340中。地刮条190固定于机壳171前端的底侧，地刮条190相对于吸污口310中心的倾斜角度为45°～70°，地刮条190的底边相对于支撑面向下凸出的高度为2mm～5mm。
合理设置地刮条相对于吸污口中心的倾斜角度，使其满足刮扫要求及在地刷后退时朝吸污口上翻的要求。若倾斜角度小于45°，地刮条不能很好的满足对待清理面的刮扫要求。若倾斜角度大于70°，地刮条在地刷后退时不能有效朝吸污口上翻。
合理设置地刮条的底边相对于支撑面向下凸出的高度，使地刮条满足刮扫要求。若地刮条相对于支撑面向下凸出的高度小于2mm，地刮条与待清理面之间的接触过盈量较小，不利于对待清理面进行有效刮扫。若地刮条相对于支撑面向下凸出的高度大于5mm，地刮条与待清理面之间的接触过盈量过大，地刮条的底侧容易受压变形而不能对待清理面进行有效刮扫，另外，地刷前进时地刮条的底侧与待清理面之间的摩擦力也较大，会对地刷的前进造成较大阻碍，不利于提高用户的使用体验。图5中，虚线S1表示吸污口310的中心线，虚线S2表示地刮条190前侧的切向，虚线S1与虚线S2之间夹角β即为地刮条190相对于吸污口310的倾斜角度。本实施例中，夹角β优选设置为50°。
地刮条190的底边相对于支撑面向下凸出的高度如图5中所示的Δh，本实施例中，Δh优选设置为3mm。地刷100放置在待清理面上时，主支撑轮110与辅支撑轮140形成的支撑面与待清理面P1重合，Δh即为地刮条190的底边与待清理面之间P1的过盈接触量，通过地刮条190与待清理面P1之间的过盈接触有助于提高地刮条190在地刷100前进时对待清理面的刮扫效果。
结合图1，把手杆200包括位于顶端的握持部210、位于底端的机身部230及连接两者的杆体部220，杆体部220与握持部210的总高度不大于机身部230 的高度以降低表面清洁装置的重心。本实施例中，杆体部220固定于机身部230的顶端，握持部210固定于杆体部220的顶端，机身部230的底端与地刷100的后侧枢接。握持部210的高度为H3，杆体部220的高度为H4，机身部230的高度为H5，H3+H4＜H5。
为了在满足握持要求的同时合理降低装置的重心，杆体部220与握持部210的总高度为机身部230高度的0.2～0.7，即0.2*H5≤H3+H4≤0.7*H5。本实施例中，H3+H4优选设置为0.5*H5。合理设置杆体部与握持部的总高度相对于机身部高度的比值，满足握持要求的同时合理降低装置的重心。若比值小于0.2，杆体部与握持部的总高度较小，不利于满足用户的握持要求，机身部的高度较大，不利于合理降低装置的重心。若比值大于0.7，机身部的高度较小，不利于满足装置中相关构件的组装要求。
使用时，地刷100与待清理面P1接触，用户向前推动装置时，清洁辊120的刷毛与待清理面P1接触产生向前的摩擦牵引力，有利于减小用户向前推动装置施加的作用力。同时，地刮条190对待清理面P1进行刮扫，地刮条190与清洁辊120之间的脏污在吸污风机350的作用下被吸入盛污桶340中。
用户向后回拉装置时，地刷100以主支撑轮110的中心点D3为支点上翘，减小清洁辊120与待清理面P1之间的摩擦力，同时也减小地刮条190与待清理面P1之间的摩擦力，有利于减小用户向后回拉装置时施加的作用力，使操作更加省力。
可以理解的是，表面清洁装置的其他结构参考现有技术。
可以理解的是，夹角α也可以设置为5°、6°、7°、8°、9°、10°、11°、12°、14°、15°、16°、17°、18°、19°、20°等其他合理的角度值。
可以理解的是，L1也可以设置为0.05*L3、0.1*L3、0.15*L3、0.18*L3、0.21*L3、0.25*L3、0.3*L3、1/3*L3等其他合理的距离。
可以理解的是，夹角β也可以设置为45°、47°、49°、51°、55°、60°、63°、67°、70°等其他合理的角度值。
可以理解的是，H3+H4也可以设置为0.2*H5、0.3*H5、0.4*H5、0.45*H5、0.55*H5、0.6*H5、0.65*H5、0.7*H5等其他合理的高度。
实施例二：
作为实施例一中技术方案的进一步改进，如图6所示，本实施例中，机盖的前侧设有位于地刮条190上方的挡沿192，挡沿192的竖向投影落在地刮条190内。
地刮条在地刷工作时与待清理面接触，地刮条与清洁辊之间的区域形成吸污区域，清洁辊转动时也会将脏污甩落在吸污区域，吸污区域内的脏污可以在吸污风机的作用下经吸污口被吸入盛污桶中。由于挡沿的竖向投影落在地刮内，装置工作时，部分被清洁辊甩落的污物在挡沿的阻挡作用下可以向下落在吸污区域内，以便脏污被吸污风机吸入盛污桶中，有利于提高吸污风机对脏污的抽吸效果，从而有利于提高装置的清洁效果。另外，自供水口处喷出的部分液体在挡沿的阻挡作用下向下流动落在清洁辊上，可以避免产生飞溅的情况，喷出的液体也可以对挡沿进行冲洗，避免脏污吸附、堆积在挡沿上导致长时间后霉变、发臭的情况，有利于提高地刷的内部清洁度。再者，装置进行自清洗时，跟随清洁辊运动的部分清洗液在挡沿的阻挡作用下向下流动可以对喷水口及吸污口进行冲洗，有利于使喷水口与吸污口保持清洁。
图6中虚线L1表示机壳前侧壁所处的竖向平面，虚线L2表示挡沿前侧壁所处的竖向平面，挡沿的竖向投影位于虚线L1与虚线L2之间，虚线L1与虚线L2位于地刮条在前后方向上的宽度范围内。本实施例中，虚线L1与虚线L2之间的距离优选的小于地刮条在前后方向上的宽度设置。
实施例三：
作为实施例一中技术方案的进一步改进，本实施例中，地刮条190设于吸污口的下方且向吸污口倾斜，所述辊刮条191在水平面的投影落在地刮190条之内。
如此，使得地刮条与地面、清洁辊配合，在清洁辊的离心力作用下，以及在吸污风机作用下，清洁辊上被辊刮条刮下的污物或者污水从地刮条与清洁辊之间的间隙被吸至吸污口，并通过吸污口进入吸污通道，从而被输送至盛污桶内，在污物或者污水进入吸污口时，由于辊刮条在水平面的投影落在地刮条之内，因此其位于地刮条的里侧，这样清洁辊被辊刮条刮下来的污物或者污水大部分都被吸入吸污口，即使有一小部分在吸污过程中喷溅，也能够落在地刮条上，然后再次被从吸污口吸走，从而保证了充分吸污，不会污染下一次的清洁。另外，在表面清洁机的自动清洗过程中，即使从供水口喷出的清洗液如果发生 飞溅，也会被辊刮条阻挡，一部分重新落回清洁辊，继续清洗清洁辊，另一部分落到地刮条的吸污区域内，也会被地刮条收集，然后吸污风机作用下再次被送至吸污口，进一步的冲洗吸污口，这样吸污口也会被反复清洗，进一步保证了吸污口的清洁度。
实施例四：
相比于前述实施例一至三，本实施例调整了部分结构的标号并对部分方案做了进一步的详细说明，同时也对前述实施例做了进一步的改进，具体参见附图7至9所示。
本实施例的表面清洁装置包括地刷11、机身12和把手杆13。地刷11上设有清洁辊111、主支撑轮112和辅支撑轮113，把手杆13与机身12连接，用于供用户握持以控制并操作表面清洁装置。
对于本实施例中辅支撑轮113和主支撑轮112的枢转轴在地刷11的上下方向以及左右方向上移动的具体效果做进一步的阐述。参照图10和图11所示，以其中一个辅支撑轮113为例，地刷11内部形成有允许辅支撑轮113的枢转轴在地刷11的上下方向以及左右方向上移动的活动腔，在表面清洁装置对平整的待清洁面区域进行清洁时，清洁辊111和主支撑轮112对表面清洁装置形成主要支撑，辅支撑轮113也在自身重力作用下与待清洁面接触，起到辅助移动的作用。而如图11所示，当表面清洁装置遇到凸起时，清洁辊111越过凸起处后，辅支撑轮113与凸起处接触，辅支撑轮113会因为受到凸起处的抵压而相对于地刷11向上移动，使得地刷11靠近待清洁面，从而保证清洁辊111和吸污口114贴近待清洁面。对于主支撑轮112左右移动的结构，即地刷11内部形成允许主支撑轮112的枢转轴左右移动的空间，使得主支撑轮112可以和枢转轴整体地左右移动，另外，可以在主支撑轮112的枢转轴和地刷11之间设置可以自由转动的滚珠，以使主支撑轮112的枢转轴可以相对地刷11转动的同时可以更容易地左右移动。其中，主支撑轮112的左右移动即为沿着主支撑轮112的轴线方向的移动。
参照图8和图12所示，两个辅支撑轮113之间的间距a小于清洁辊111的轴向长度，并且大于两个主支撑轮112之间的间距b，也就是说，在整体上，地刷11与待清洁面的接触情况形成了前宽后窄的情形，因为机身12连接于地刷11的后侧，所以在表面清洁装置转向时，用户给予表面清洁装置转向的力 是由把手杆13经机身12传递至地刷11的后侧，因此，地刷11与待清洁面前宽后窄的接触情形更容易使地刷11以后侧为转动中心进行转向，从而使得转动中心与用户施加的力接近，便于用户控制表面清洁装置进行转向。
继续参照图8和图12所示，在地刷11的前后方向上，辅支撑轮113与清洁辊111之间的距离S1小于辅支撑轮113与主支撑轮112之间的距离S2，一方面使得辅支撑轮113、清洁辊111与待清洁面的接触区贴近，继而使得地刷11与待清洁面的接触可以看做具有利用清洁辊111和辅支撑轮113形成的前接触区，以及利用主支撑轮112形成的后接触区，从而使得表面清洁装置更容易转向，另一方面，使得清洁辊111在越过凸起待清洁面后，辅支撑轮113能够及时地与凸起待清洁面接触，从而便于地刷11前部分越过凸起。
优选地，辅支撑轮113与地刷11前侧的距离S3为地刷11整体前后长度的1/5至2/5，具体地，可以取1/5、1/4、1/3、2/5等，以保证在辅支撑轮113越过凸起后，地刷11在惯性作用下越过凸起处的部分大于等于地刷11整体的1/2。
参照图8和图10所示，辅支撑轮113的轴向活动距离d大于主支撑轮112的轴向活动距离，也就是辅支撑轮113相对于地刷11左右移动的范围大于主支撑轮112相对于地刷11左右移动的范围。其中，辅支撑轮113的左右移动即为沿着辅支撑轮113的轴线方向的移动。以图10的辅支撑轮113为例，左右移动范围指的是：辅支撑轮113在左右方向上所能移动到的最远位置之间的距离，即图10中左侧虚线(辅支撑轮113移动至最左侧时中心线所在位置)和右侧虚线(辅支撑轮113移动至最右侧时中心线所在位置)。具体地，辅支撑轮113的轴向活动范围为1-8mm。
参照图8和图12所示，主支撑轮112、辅支撑轮113与待清洁面的接触点连线所围成的面积和地刷11在待清洁面上的投影面积之间的比值为1/5至1/2，从而避免形成的支撑区域过小，导致表面清洁装置不稳，同时避免支撑区域过大，即避免主支撑轮112之间的间距以及辅支撑轮113之间的间距过大影响地刷11的转向。
继续参照图8和图12所示，主支撑轮112、辅支撑轮113与待清洁面的接触点连线所围成的图形为等腰梯形，具体来说，就是其中一个主支撑轮112(辅支撑轮113)在移动范围内的任意位置，另外一个主支撑轮112(辅支撑 轮113)均具有与之相对应的位置，以使得两个主支撑轮112(辅支撑轮113)关于地刷11的中心线对称，继而使得两个主支撑轮112和两个辅支撑轮113与待清洁面的接触点连线围成的图形为等腰梯形，这样的结构使得地刷11前进时较为稳定。具体地，对于主支撑轮112和辅支撑轮113在活动范围内的任意位置形成的等腰梯形，等腰梯形的底边角度β在60°至80°之间，以保证辅支撑轮113与主支撑轮112之间的距离不会过小，也就是保证辅支撑轮113与清洁辊111的距离不会过大，以便于辅支撑轮113在清洁辊111越过凸起后及时与凸起接触。
参照图8和图12所示，进一步地，两个辅支撑轮113分别位于两个主支撑轮112与清洁辊111两端的连线上，具体而言，以图12中右侧的主支撑轮112和辅支撑轮113为例，从主支撑轮112的左侧和右侧分别做与清洁辊111的端部之间的连线(图12中的两条虚线)，那么在图12所示平面内，主支撑轮112上的任一点与清洁辊111的端部之间的连线都处于两条虚线之间，不论辅支撑轮113位于其活动范围内的任何位置，辅支撑轮113(包括轮体和枢转轴)均会与上述主支撑轮112与清洁辊111一端的两条连线相交，也就使得辅支撑轮113必然位于主支撑轮112与清洁辊111端部的连线上，从而使得地刷11与待清洁面的接触整体上呈由后侧向前侧逐渐变宽的趋势，使得表面清洁装置的移动更加稳定。
结合图8和图9所示，地刷11上设有可拆卸的板体构件115，板体构件115上设有刮条116，刮条116设置在板体构件115靠近清洁辊111的一端，从而位于清洁辊111的后侧，辅支撑轮113设置在板体构件115的底部，通过板体构件115与地刷11的可拆卸连接，使得板体构件115、刮条116和辅支撑轮113能够作为一个整体与地刷11实现连接，从而使得拆装或更换辅支撑轮113和刮条116更加方便。
结合图7至图11所示，本实施例的表面清洁装置在使用过程中，用户可以手持把手杆13控制和操作表面清洁装置，对待清洁面进行清洁时，转动的清洁辊111对待清洁面进行拖擦，真空电机通过吸污口114将待清洁面上的脏污吸入集污桶121。当表面清洁装置在清洁过程中遇到凸起时，清洁辊111先经过凸起处，然后辅支撑轮113与凸起接触，此时，辅支撑轮113会在凸起处的抵压作用下相对于地刷11向上活动，使得地刷11靠近待清洁面，以使清洁 辊111能够保持与待清洁面的接触，并且使得吸污口114能够保持贴近待清洁面，以保证吸污效果。并且，如果凸起处使辅支撑轮113达到最大向上移动距离，辅支撑轮113也不会完全缩入地刷11内，仍然能够与凸起保持滑动接触，在表面清洁装置的前进惯性或者用户的轻推作用下，辅支撑轮113能够轻松滚过凸起处，此时地刷11的前部分越过了凸起处，使得地刷11的重力大部分分布在凸起处前侧，在重力的作用下清洁辊111就可以与待清洁面接触，使得表面清洁装置重新获得前进的动力(即转动的清洁辊111与待清洁面之间的摩擦力)。
实施例五：
本实施例与实施例一至四不同的是，本实施例的辅支撑轮采用柔性材料制成，而枢转轴在上下方向上固定。当表面清洁装置遇到凸起的待清洁面时，辅支撑轮和凸起接触后，在表面清洁装置重力的和凸起的挤压作用下发生形变，从而实现辅支撑轮相对于地刷的上下活动。
实施例六：
本实施例与实施例一至五不同的是，本实施例中的辅支撑轮和主支撑轮左右移动的方式有所不同，具体地，辅支撑轮和主支撑轮的枢转轴不可以相对于地刷左右移动，而是辅支撑轮和主支撑轮自身相对于枢转轴左右移动。
实施例七：
本实施例与实施例一至六不同的是，本实施例的主支撑轮和辅支撑轮在左右方向上不可移动。在本实施例中，因为主支撑轮和辅支撑轮不可左右移动，所以主支撑轮、辅支撑轮与待清洁面的接触点连线所围成的面积和地刷在待清洁面上的投影面积之间的比值为1/5至1/2，主支撑轮、辅支撑轮与待清洁面的接触点连线所围成的图形为等腰梯形且等腰梯形的底边角度在60°至80°之间，以及两个辅支撑轮分别位于两个主支撑轮与清洁辊两端的连线上，均表达的是对于主支撑轮、辅支撑轮在地刷上的设置位置需要满足上述条件。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
除上述优选实施例外，本发明还有其他的实施方式，本领域技术人员可以根据本发明作出各种改变和变形，只要不脱离本发明的原理，均应属于本发明权利要求书中所定义的范围。

Claims (9)

  1. 一种表面清洁装置，包括相互铰接的地刷和机身，所述地刷设有主支撑轮、辅支撑轮、地刮条、清洁辊以及用于容置清洁辊的安装腔，所述辅支撑轮设于所述主支撑轮与清洁辊之间，所述地刮条设于辅支撑轮与清洁辊之间，所述清洁辊与待清洁表面接触以形成向前的摩擦牵引力，其特征在于，所述辅支撑轮可相对于地刷左右移动，辅支撑轮与所述清洁辊轴线之间的间距小于所述辅支撑轮与所述主支撑轮轴线之间的间距，以使所述主支撑轮在所述地刷后退时作为支点，以减小摩擦牵引力。
  2. 根据权利要求1所述的表面清洁装置，其特征在于，所述辅支撑轮可相对于地刷上下活动，其中，所述辅支撑轮上下活动的距离小于所述辅支撑轮的半径。
  3. 根据权利要求2所述的表面清洁装置，其特征在于，所述主支撑轮和所述辅支撑轮均为两个，每个所述辅支撑轮均位于相应的所述主支撑轮与清洁辊相应一端的连线上。
  4. 根据权利要求1所述的表面清洁装置，其特征在于，所述地刷上设有板体构件，所述地刮条和辅支撑轮均设置在板体构件上，以使所述地刮条、辅支撑轮和板体构件可作为整体单元安装在所述地刷上。
  5. 根据权利要求1所述的表面清洁装置，其特征在于，所述主支撑轮的中心高于辅支撑轮的中心以使地刷后高前低设置，所述主支撑轮的中心与辅支撑轮的中心形成有斜面，斜面相对于地刷底面的倾斜角度为5°～20°。
  6. 根据权利要求1所述的表面清洁装置，其特征在于，所述地刷设有位于辅支撑轮与清洁辊之间的吸污口，地刮条设于吸污口的下方，地刮条的底边低于主支撑轮与辅支撑轮形成的支撑面。
  7. 根据权利要求6所述的表面清洁装置，其特征在于，所述地刷包括机壳及罩设于机壳上的机盖，所述机壳设有位于辅支撑轮与清洁辊之间的吸污口和柔性的地刮条，地刮条设于吸污口的下方且向吸污口倾斜，机盖的前侧设有位于地刮上方的挡沿，挡沿的竖向投影落在地刮条内。
  8. 根据权利要求6所述的表面清洁装置，其特征在于，所述地刷包括机壳及罩设于机壳上的机盖，所述机壳设有位于辅支撑轮与清洁辊之间的吸污口 和柔性的地刮条以及与清洁辊表面过盈配合的辊刮条，地刮条设于吸污口的下方且向吸污口倾斜，所述辊刮条在水平面的投影落在地刮条内。
  9. 根据权利要求1所述的表面清洁装置，其特征在于，所述机身包括位于顶端的握持部、位于底端的机身部及连接两者的杆体部，所述杆体部与握持部的总高度为机身部高度的0.2～0.7。
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