WO2021175329A1 - 电动清洁刷 - Google Patents

电动清洁刷 Download PDF

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Publication number
WO2021175329A1
WO2021175329A1 PCT/CN2021/079493 CN2021079493W WO2021175329A1 WO 2021175329 A1 WO2021175329 A1 WO 2021175329A1 CN 2021079493 W CN2021079493 W CN 2021079493W WO 2021175329 A1 WO2021175329 A1 WO 2021175329A1
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WO
WIPO (PCT)
Prior art keywords
brush
electric cleaning
cleaning brush
cleaned
support plate
Prior art date
Application number
PCT/CN2021/079493
Other languages
English (en)
French (fr)
Inventor
袁帅
张煜
Original Assignee
苏州宝时得电动工具有限公司
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
Publication date
Priority claimed from CN202010152289.4A external-priority patent/CN113349679A/zh
Priority claimed from CN202020266678.5U external-priority patent/CN212879144U/zh
Application filed by 苏州宝时得电动工具有限公司 filed Critical 苏州宝时得电动工具有限公司
Publication of WO2021175329A1 publication Critical patent/WO2021175329A1/zh

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    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • 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
    • A47L11/24—Floor-sweeping machines, motor-driven
    • 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

Definitions

  • the invention relates to a cleaning brush, in particular to an electric cleaning brush applied in the field of household cleaning and maintenance.
  • roller brush type cleaning brushes all control the effective working length of the bristles in contact with the surface to be cleaned and the friction between the bristles and the ground by changing the pressure exerted on the cleaning brush by the operator.
  • This type of cleaning brush is easy to use Very poor, making daily cleaning work cumbersome, increasing the workload and reducing the efficiency of cleaning. For this reason, it is very necessary to design a new type of roller brush cleaning brush that can solve this problem.
  • the purpose of the present invention is to provide an electric cleaning brush with an effective working length of bristles that can be adjusted adaptively to achieve the effect of controlling the friction between the bristles and the ground, effectively preventing the cleaning brush from generating excessive kick force, and having strong ease of use. .
  • an electric cleaning brush the electric cleaning brush includes a hand lever for the operator to hold; a connector connected to one end of the hand lever; a rolling brush, the The roller brush has a brush layer in contact with the surface to be cleaned; a support plate fixed on the connecting piece, the roller brush rotates relative to the support plate toward the direction of the operator with a rotation axis as the center, and the handle has at least In two operating positions, the angle between the axis of the handle and the surface to be cleaned in the first operating position is greater than the angle between the axis of the handle and the surface to be cleaned in the second operating position; The minimum distance between the support plate and the surface to be cleaned in the first operating position is smaller than the minimum distance between the support plate and the surface to be cleaned in the second operating position.
  • the angle between the axis of the handle and the surface to be cleaned is between 15 degrees and 70 degrees, and the minimum distance between the support plate and the surface to be cleaned is between 4 mm and 25 mm.
  • an end of the support plate close to the surface to be cleaned is provided with a restriction portion, which defines a contour line projected by the restriction portion on the axial direction of the roller brush as a first line, and defines the roller brush in its axial direction.
  • the projection above is an axial projection contour line, and the distance between the first line and the axial projection contour line of the roller brush is not equal.
  • the restricting portion has a first end close to the surface to be cleaned, and the projection of the first end is the shortest distance from the axial projection contour line of the roller brush in the first line part.
  • the distance between the first line and the axial projection contour line of the roller brush gradually increases from the first end along the extension direction of the first line.
  • a part of the outer contour of the restricting portion is substantially an arc structure, and the first line is arranged symmetrically with respect to the axis of the hand lever.
  • the rolling brush is rotatably fixed between the two support plates;
  • the rolling brush is rotatably fixed on the clamping piece, and one end of the clamping piece is fixedly arranged on the connecting piece.
  • the electric cleaning brush further includes an adjustment structure capable of adjusting the minimum distance between the support plate and the surface to be cleaned in different operating positions;
  • the adjustment structure includes: located on the support plate close to the A restricting portion with an arc-shaped part at one end of the cleaning surface; an elastic element, the restricting portion is connected to the support plate through the elastic element, and when the elastic element contracts or stretches under a force, the restricting The part can move relative to the surface to be cleaned.
  • the rotating shaft of the roller brush is mounted on the bracket plate, and the electric cleaning brush further includes an adjustment structure capable of adjusting the minimum distance between the bracket plate and the surface to be cleaned in different operating positions;
  • the adjustment structure includes: a first elastic member disposed between the support plate and the rotating shaft of the roller brush, through the first elastic member, the rotating shaft of the roller brush can be displaced relative to the support plate, so that When the electric cleaning brush is in different working positions, the minimum distance between the support plate and the surface to be cleaned is different.
  • the support plate is provided with an opening for the rotation shaft of the rolling brush to move, and the rotation shaft of the rolling brush is installed in the opening; in the vertical direction, the opening has an opening for the The space where the rotating shaft of the roller brush moves.
  • the electric cleaning brush further includes: a first pulley installed on the rotating shaft of the roller brush; a second pulley; a belt that transmits the first pulley and the second pulley; tensioning Wheel, one side of the tension wheel abuts the belt to adjust the degree of tightness of the belt.
  • the tension pulley can move in a direction perpendicular to the straight line formed by both the first pulley and the second pulley.
  • a second elastic member is provided between the tensioning wheel and the bracket plate, and the second elastic member enables the tensioning wheel to be displaced relative to the bracket plate to enable the tensioning
  • the wheel moves in a direction perpendicular to the straight line formed by both the first pulley and the second pulley.
  • the beneficial effect of the present invention is that the electric cleaning brush provided by the present invention can automatically adjust the maximum effective working length of the bristles so as to achieve the effect of controlling the friction between the bristles and the ground, and effectively prevent the electric cleaning brush from generating excessive kick force.
  • the electric cleaning brush handle is raised too high or If the pressure exerted on the electric cleaning brush is too large, the electric cleaning brush will not produce large or fast friction, kick force or reverse travel stroke, which improves the ease of use of the electric cleaning brush and increases the cleaning efficiency. .
  • FIG. 1 is a schematic diagram of the structure of the electric cleaning brush shown in the first embodiment of the present invention
  • Fig. 2 is a schematic view of the structure of the electric cleaning brush in Fig. 1 in another direction;
  • Figure 3 is a schematic diagram of the use of the first preferred solution in the first embodiment
  • Figure 4 is a schematic diagram of the use of the second preferred solution in the first embodiment
  • Figure 5 is a schematic diagram of the use of the third preferred solution in the first embodiment
  • FIG. 6 is a schematic diagram of the structure of the electric cleaning brush shown in the second embodiment of the present invention.
  • FIG. 7 is a schematic view of the structure of the electric cleaning brush in another direction in FIG. 6;
  • FIG. 8 is a schematic diagram of the structure of the electric cleaning brush shown in the third embodiment of the present invention.
  • the electric cleaning brush 10 shown in the first embodiment of the present invention includes a hand lever 11 for the operator to hold, a connector 12 connected to one end of the hand lever 11, and mounted on the connector 12
  • the roller brush 13 and the two bracket plates 14 fixed on the connecting member 12, the bracket plate 14 can support the fixed roller brush 13 and connect it with the connecting member 12.
  • the connecting piece 12 and the rolling brush 13 are both located on the central axis of the hand lever 11.
  • the central axis of the hand lever 11 may be referred to as the first central axis, which is labeled x in FIG. 1.
  • the hand lever 11 is in the shape of a slender rod, and its end away from the connecting piece is connected with a power source.
  • the connecting piece 12 includes a cylindrical body 121 and a truncated cone 122 arranged on the semi-cylindrical wall of the cylindrical body 121.
  • the connecting member 12 is also provided with a driving motor (not shown) for driving the roller brush 13 for rotating operations, and one of the bracket plates 14 is provided with a transmission mechanism (not shown) for rotating the driving motor The force is transmitted to the roller brush 13.
  • the roller brush 13 has a cylindrical structure.
  • the roller brush 13 includes a roller (not shown), a roller (not shown) sleeved on the roller to roll on the surface to be cleaned, and hairs covering the wall of the roller.
  • Brush layer (not shown).
  • the brush layer forms a cylindrical structure, and the brush layer is fixed on the drum and rolls synchronously with the rolling of the drum.
  • the part of the brush layer in contact with the surface to be cleaned is deformed inward along the radial direction of the roller brush 13 under the action of external force, and the bristles on the brush layer form a cleaning part in contact with the surface to be cleaned to clean and bristles.
  • the bracket plate 14 has a restricting portion 141 and a fixing portion 142.
  • the restricting portion 141 and the fixing portion 142 integrally extend to form the support plate 14.
  • the restricting portions 141 of the two support plates 14 are symmetrically arranged on both sides of the roller brush 13.
  • the fixing portions 142 of 14 are symmetrically fixed on both sides of the connecting member 12.
  • the outer contour of the fixing portion 142 includes a rectangular structure and a semicircular structure connected to one end of the short side of the rectangle, and the outer contour of the restricting portion 141 is an irregular arc structure.
  • the projection of the restricting portion 141 is located in the end surface of the roller brush 13, and the contour line of the projection of the restricting portion 141 in the axial direction of the roller brush 13 is the first line.
  • the first line may be symmetrically arranged with respect to the axis of the hand lever 11.
  • the projection of the roller brush 13 on its axial direction is defined as an axial projection contour line.
  • the distance between the first line and the edge of the end surface of the roller brush 13 is not equal, that is, the distance between the first line and the axial projection contour line of the roller brush 13 is not equal, and the restricting portion 141 restricts the effect of the roller brush 13 on the external force.
  • the restricting portion 141 has a first end 1411 close to the surface to be cleaned.
  • the first end 1411 can be in direct contact with the surface to be cleaned.
  • the projection of the first end 1411 is located on the first central axis x.
  • the distance between the first line and the edge of the end surface of the rolling brush 13 gradually increases upward from the projection of the first end 1411, that is, the distance between the first line and the axial projection contour line of the rolling brush 13 starts from the first One end portion gradually increases along the extending direction of the first line.
  • the effective working length of the bristles of the electric cleaning brush 10 is the distance from the part of the brush layer in contact with the surface to be cleaned to the first line in the direction perpendicular to the surface to be cleaned.
  • the part of the brush layer in contact with the surface to be cleaned is different, so the bristles are effective
  • the working length is different.
  • the effective working length of the bristles of the electric cleaning brush 10 shown in this embodiment can be changed according to the change of the part of the brush layer in contact with the surface to be cleaned, so as to change the cleaning formed by the contact between the bristles on the brush layer and the surface to be cleaned. Therefore, the friction force generated when the electric cleaning brush 10 is in contact with the surface to be cleaned is changed, and the practicability and ease of use of the electric cleaning brush 10 are improved.
  • the projection of the restricting portion 141 on the end surface of the roller brush 13 is asymmetrically arranged on both sides of the first central axis x. In other embodiments, the projection of the restricting portion 141 on the end surface of the roller brush 13 may be symmetrically arranged on both sides of the first central axis x.
  • the distance between the first line of the electric cleaning brush 10 and the edge of the end surface of the roller brush 13 The distance gradually increases from the projection point of the first end portion 1411 toward the outer side of the two end surfaces, and the distance between the first lines on both sides and the edge of the end surface of the roller brush 13 increases simultaneously.
  • connection between the rolling brush 13 and the connecting member 12 can also be as follows: the rolling brush 13 is rotatably fixed between the two support plates 14. Specifically, the roller is fixed between the two support plates 14, and the two support plates 14 are symmetrically fixed on both sides of the connecting member 12.
  • connection between the rolling brush 13 and the connecting member 12 may be as follows: the rolling brush 13 is rotatably fixed on a clamping member (not shown), and one end of the clamping member is fixedly arranged on the connecting member 12.
  • the roller is fixed on the clamping piece, one end of the clamping piece is fixedly arranged on the connecting piece 12, the two bracket plates 14 are symmetrically fixed on both sides of the connecting piece 12, and the restricting portions 141 of the two bracket plates 14 are located on the roller.
  • the contact position between the brush layer and the surface to be cleaned can be changed by controlling the angle between the first central axis x where the handle 11 is located in the rolling direction and the ground, thereby changing the effective work of the bristles length.
  • the angle between the axis of the handle 11 and the surface to be cleaned is between 15 degrees and 70 degrees
  • the minimum distance between the support plate 14 and the surface to be cleaned is between 4 mm and 25 mm.
  • Figure 3 please refer to Figure 3.
  • the maximum effective working length a of the bristles is 13mm; please refer to Figure 4, when In the rolling direction, when the angle between the first central axis x where the handle 11 is located and the ground is 45°, the maximum effective working length b of the bristles is 10mm; When the angle between a central axis x and the ground is 70°, the maximum effective working length c of the bristles is 4mm; when the angle between the first central axis x where the handle 11 is located and the ground is 80° in the rolling direction, the bristles are the largest The effective working length is 2mm (not shown).
  • the roller brush 13 rotates in the direction of the operator relative to the support plate 14 with the rotating shaft as the center.
  • the first central axis x where the handle 11 is located The angle with the ground is too large, but because the maximum effective working length of the corresponding bristles is reduced, the friction between the brush layer and the surface to be cleaned will not cause the electric cleaning brush 10 to reverse, ensuring that the electric cleaning brush 10 stability and practicality.
  • the hand lever 11 has at least two operating positions. In the first operating position, the angle between the axis of the hand lever 11 and the surface to be cleaned is larger than that in the second operating position.
  • the included angle between the cleaning surfaces; the minimum distance between the support plate 14 and the surface to be cleaned in the first operating position is smaller than the minimum distance between the support plate 14 and the surface to be cleaned in the second operating position.
  • the electric cleaning brush 20 shown in the second embodiment of the present invention includes a hand lever 21, a connecting piece 22 connected to one end of the hand lever 21, a roller brush 23 installed on the connecting piece 22, and fixed Two bracket plates 24 on the connecting piece 22.
  • the connecting piece 22 and the support plate 24 are located on the central axis of the hand lever 21.
  • the central axis of the hand lever 21 can be referred to as the second central axis, which is labeled y in FIG. 5.
  • the hand lever 21, the connecting member 22, the rolling brush 23, and the way of driving the rolling brush 23 to rotate in this embodiment are the same as those shown in the first embodiment, and will not be repeated here.
  • the bracket plate 24 has a restricting portion 241 and a fixing portion 242.
  • the restricting portion 241 and the fixing portion 242 are connected by an elastic member 243 to form the support plate 24.
  • the restricting portions 241 of the two bracket plates 24 are symmetrically arranged on both sides of the roller brush 23, and the fixing portions 242 of the two bracket plates 24 are symmetrically fixed on both sides of the connecting member 22.
  • the outer contour of the fixing portion 242 includes a rectangular structure and a semicircular structure connected with one end of the short side of the rectangle.
  • the outer contour of the restricting portion 241 has an arc portion that can contact the surface to be cleaned, and the arc portion is 1/2 With a semicircular structure, the restricting portion 241 restricts the amount of deformation of the roller brush 23 that is concave in the radial direction under the action of external force.
  • the projection of the restricting portion 241 is located in the end surface of the roller brush 23.
  • the contour line of the projection of the restricting portion 241 is the second line.
  • the second central axis y intersects and is perpendicular.
  • the elastic member 243 is a spring.
  • connection between the rolling brush 23 and the connecting member 22 may be as follows: the rolling brush 23 is rotatably fixed on a clamping member (not shown), and one end of the clamping member is fixedly arranged on the connecting member 22. Specifically, the roller is fixed to a clamping piece, one end of the clamping piece is fixedly arranged on the connecting piece 22, two bracket plates 24 are symmetrically fixed on both sides of the connecting piece 22, and the restricting portions 241 of the two bracket plates 24 are located on the roller. The outer sides of the two end faces of the brush 23.
  • the effective working length of the bristles of the electric cleaning brush 20 is the distance from the part of the brush layer in contact with the surface to be cleaned to the second line perpendicular to the surface to be cleaned.
  • the change in the position of the second line drives the effective working length of the bristles to change.
  • the spring when no pressure is applied to the electric cleaning brush 20, the spring is in the original state, and when pressure is applied to the electric cleaning brush 20, the rolling brush 23 is squeezed and deformed under the action of the cleaning surface, and the restricting portion 241 In contact with the surface to be cleaned, and under the action of the surface to be cleaned, the spring is compressed and deformed, which drives the restricting portion 241 to move relative to the roller brush 23.
  • the projection of the restricting portion 241 moves in the direction of the second central axis y of the handle 21. The position of the second line is changed, so that the effective working length of the bristles of the electric cleaning brush 20 is changed.
  • the effective working length of the bristles of the electric cleaning brush 20 shown in this embodiment can be changed according to changes in the pressure applied to the electric cleaning brush 20, thereby changing the friction force generated when the electric cleaning brush 20 contacts the surface to be cleaned.
  • the pressure applied to the electric cleaning brush 20 is too large, because the restricting portion 241 restricts the radially concave deformation of the roller brush 23 under the action of external force, the effective working length of the bristles is limited, and the electric cleaning brush 20 is in contact with the surface to be cleaned. Produces less friction and less kickback force.
  • the electric cleaning brush 20 can change the effective working length of the bristles according to actual needs, thereby changing the friction force generated by the contact between the electric cleaning brush 20 and the surface to be cleaned, and improving the practicability and ease of use of the electric cleaning brush 20.
  • the electric cleaning brush 30 shown in the third embodiment of the present invention includes a hand lever 31, a connecting piece 32 connected to one end of the hand lever 31, a rolling brush 33, and two bracket plates fixed on the connecting piece 32 34.
  • the two support plates 34 are fixedly connected to the two sides of the connecting member 32 respectively.
  • the rolling brush 33 can be installed and connected to the bracket plate 34, for example, two ends of the rolling brush 33 are installed and connected to the two bracket plates 34 respectively.
  • the connecting piece 32 and the bracket plate 34 are located in the direction of the central axis of the hand lever 31.
  • the central axis of the hand lever 31 can be referred to as the third central axis, which is marked as z in Fig. 8.
  • the bracket plate 34 has a restricting portion 341 and a fixing portion 342.
  • the restricting portions 341 of the two bracket plates 34 are symmetrically arranged on both sides of the roller brush 33, and the fixing portions 342 of the two bracket plates 34 are symmetrically fixed on both sides of the connecting member 32.
  • the structure of the fixing portion 342 and the restricting portion 341 can be as described in any of the foregoing embodiments, and will not be repeated here.
  • the restricting portion 341 restricts the amount of deformation of the roller brush 33 that is concave in the radial direction under the action of an external force.
  • the contour line of the projection of the restricting portion 341 is a third line, and the axis of the third line intersects and is perpendicular to the third central axis z of the hand lever 31.
  • connection manner of the rolling brush 33 and the bracket plate 34 may be: the rolling brush 33 is rotatably connected to the bracket plate 34.
  • the rotating shafts of the roller brush 33 are inserted on the bracket plate 34 respectively.
  • the adjustment structure may include: a first elastic member 35 arranged between the support plate 34 and the rotating shaft of the roller brush 33, through the first elastic member 35, the rotating shaft of the roller brush 33 can be displaced relative to the support plate 34, so that the electric cleaning brush 30 In different working positions, the minimum distance between the support plate 34 and the ground is different.
  • the first elastic member 35 may be a mechanism such as a spring.
  • the bracket plate 34 may be provided with an opening for the rotation axis of the roller brush 33 to move, and the rotation axis of the roller brush 33 is installed in the opening.
  • the opening In the vertical direction, the opening has a space for the rotating shaft of the roller brush 33 to move.
  • the opening has a tendency to extend in the vertical direction, that is, the rotating shaft of the roller brush 33 can be relatively displaced in the vertical direction.
  • the first elastic member 35 can abut against the bracket plate 34 at one end, and abut against the rotating shaft of the rolling brush 33 at the other end, so as to be able to give the rolling brush 33 an at least partially vertical downward force.
  • the first elastic member 35 when no pressure is applied to the electric cleaning brush 30, the first elastic member 35 is in its original state.
  • the roller brush 33 is squeezed and deformed under the action of the cleaned surface.
  • the first elastic member 35 is compressed and deformed, and the rolling brush 33 moves upward relative to the bracket plate 34, thereby the bristles of the electric cleaning brush 30
  • the effective working length changes.
  • the pressure applied to the electric cleaning brush 30 is different, the first elastic member 35 undergoes different compression and deformation, and the position of the projection of the restricting portion 341 in the end surface of the roller brush 33 changes, that is, the position of the third line changes differently.
  • the electric cleaning brush 30 may include: a first pulley 36 installed on the rotating shaft of the roller brush 33; a second pulley 37; a transmission belt 38 that transmits the first pulley 36 and the second pulley 37; and a tension pulley 39 , One side of the tensioning wheel 39 abuts the transmission belt 38 to adjust the tightness of the transmission belt 38.
  • the first pulley 36 is fixedly connected to the rotating shaft, so that the first pulley 36 can drive the roller brush 33 to rotate.
  • the second pulley 37 can be installed on the upper part of the bracket plate 34, that is, the place where the bracket plate 34 is fixedly connected to the connecting piece 32.
  • the second pulley 37 drives the first pulley 36 to rotate through the transmission belt 38, so as to realize the rotation of the roller brush 33. Rotate. Since the rotating shaft of the roller brush 33 can produce relative displacement in the vertical direction, the distance between the first pulley 36 and the second pulley 37 will change, so the tightness of the transmission belt 38 needs to be adjusted.
  • the tension pulley 39 can be displaced in a direction perpendicular to the straight line formed by both the first pulley 36 and the second pulley 37.
  • a second elastic member 310 is provided between the tension wheel 39 and the bracket plate 34.
  • the second elastic member 310 enables the tension wheel 39 to be displaced relative to the bracket plate 34, so that the tension wheel 39 is perpendicular to the first
  • the pulley 36 and the second pulley 37 move in the direction of a straight line formed by both the pulley 36 and the second pulley 37.
  • the second elastic member 310 may be a mechanism such as a spring.
  • the transmission belt 38 tightens, and at the same time the pressure applied by the transmission belt 38 to the tension pulley 39 increases, the second elastic member 310 shrinks, and the tension pulley 39 Approaching the straight line formed by both the first pulley 36 and the second pulley 37.
  • the transmission belt 38 becomes loose.
  • the second elastic member 310 is expanded to push the tension pulley 39 toward the first pulley 36 and the second pulley.
  • the straight line formed by the two pulleys 37 is far away, so that the degree of tortuosity of the transmission belt 38 is increased to compensate for the reduced distance between the first pulley 36 and the second pulley 37.
  • the tension pulley 39 can produce displacement in the direction of the straight line formed by the first pulley 36 and the second pulley 37, and the tension pulley 39 is not located between the first pulley 36 and the second pulley.
  • the two wheels 37 form a straight line.
  • a second elastic member 310 is arranged between the tension wheel 39 and the bracket plate 34 to control the displacement of the tension wheel 39.
  • the tension pulley 39 is formed toward both the first pulley 36 and the second pulley 37 under the action of the second elastic member 310 and the transmission belt 38.
  • the perpendicular direction of the line segment is far away to make up for the reduced distance between the first pulley 36 and the second pulley 37.
  • the second elastic member 310 can make the tensioning wheel 39 displace and make one side of it close to the transmission belt 38, thereby adjusting the degree of tortuousness of the transmission belt 38 and adapting to the first pulley 36 and the second pulley 36. Changes in the distance between the pulleys 37.
  • the bracket plate 34 may have a sliding groove extending in the direction of gravity, and the tensioning wheel 39 can slide in the sliding groove, and the tightness of the transmission belt 38 can be adjusted under the action of the tensioning wheel 39's own gravity. .
  • the tension pulley 39 moves downward along the sliding groove under the action of its own gravity, so that the degree of tortuousness of the transmission belt 38 is increased to compensate for the first pulley.
  • the distance between the one pulley 36 and the second pulley 37 is reduced.
  • the transmission belt 38 When the distance between the first pulley 36 and the second pulley 37 increases, the transmission belt 38 is tightened, that is, the degree of tortuousness of the transmission belt 38 decreases, and the transmission belt 38 resists the tension pulley 39 to move upward along the sliding groove. .
  • the driving motor for driving the roller brush 33 for rotating operation is drivingly connected to the second pulley 37, so that the roller brush 33 is driven by the transmission of the pulley and the transmission belt 38. Perform rotating operations.
  • the structures with adjustable maximum effective working length of the bristles shown in the first, second and third embodiments can be applied not only to the manual cleaning brushes in the first, second and third embodiments, but also to AC and DC power supplies. Move the cleaning brush.
  • the electric cleaning brushes 10, 20 provided by the present invention can automatically adjust the maximum effective working length of the bristles to achieve the effect of controlling the friction between the bristles and the ground, and effectively prevent the electric cleaning brushes 10, 20 from generating excessive kickback. It can meet the needs of users with a small kick force when using the reversing roller brush type electric cleaning brush 10, 20 to clean, especially when cleaning rough surfaces, it can maintain good stability, even if the electric cleaning brush 10, 20. If the hand lever is raised too high or the pressure exerted on the electric cleaning brushes 10, 20 is too large, the electric cleaning brushes 10, 20 will not produce large or fast friction, kick force or reverse walking stroke. The ease of use of the electric cleaning brushes 10 and 20 is improved, and the cleaning efficiency is increased.

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Abstract

一种电动清洁刷(10,20,30)，包括手杆(11,21,31)；连接件(12,22,32)；滚刷(13,23,33)，滚刷(13,23,33)具有与被清洁表面接触的毛刷层；支架板(14,24,34)，滚刷(13,23,33)以转轴为中心相对支架板(14,24,34)朝向操作者的方向旋转，手杆(11,21,31)具有至少两个操作位置，在第一操作位置时手杆(11,21,31)的轴线与被清洁表面之间的夹角大于在第二操作位置时手杆(11,21,31)的轴线与被清洁表面之间的夹角；在第一操作位置时支架板(14,24,34)与被清洁表面之间的最小间距小于在第二操作位置时支架板(14,24,34)与被清洁表面之间的最小间距。电动清洁刷(10,20,30)可自动调整刷毛的最大有效工作长度，即使手杆(11,21,31)抬的过高或者施加在手杆(11,21,31)上的压力过大，电动清洁刷(10,20,30)都不会产生较大或过快的摩擦力、反踢力或反向行走行程，提升其易用性，增加了清洁的效率。

Description

电动清洁刷
交叉参考相关引用
本申请要求2020年03月06日提交的申请号为202020266678.5的中国专利申请和2020年03月06日提交的申请号为202010152289.4的中国专利申请的优先权，上述申请参考并入本文。
技术领域
本发明涉及一种清洁刷，特别是应用于家居清洁维护领域中的电动清洁刷。
背景技术
现有的滚刷类清洁刷全都是通过操作者改变施加在清洁刷上的压力来控制与被清洁面接触的刷毛的有效工作长度以及刷毛与地面的摩擦力，在电力驱动滚刷反转工作过程中，当把清洁刷的手杆抬的过高时，易出现较大的反踢力，刷毛与地面产生的摩擦力不可控而且有可能出现清洁刷堵转，此类清洁刷易用性很差，使日常的清洁工作变得繁琐，增加了工作量，降低了清洁的效率。为此，非常有必要设计出一种能够解决这一问题的新型滚刷类清洁刷。
发明内容
本发明的目的在于提供一种刷毛的有效工作长度可自适应调整以此达到控制刷毛与地面的摩擦力的效果，有效防止清洁刷产生过大的反踢力，易用性强的电动清洁刷。
为达到上述目的，本发明提供如下技术方案：一种电动清洁刷，所述电动清洁刷包括供操作者握持的手杆；与所述手杆的一端连接的连接件；滚刷，所述滚刷具有与被清洁表面接触的毛刷层；固定在所述连接件上的支架板，所述滚刷以转轴为中心相对所述支架板朝向操作者的方向旋转，所述手杆具有至少两个操作位置，在第一操作位置时所述手杆的轴线与被清洁表面之间的夹角大于在第二操作位置时所述手杆的轴线与被清洁表面之间的夹角；在第一操作位置时所述支架板与被清洁表面之间的最小间距小于在第二操作位置时所述支架板与被清洁表面之间的最小间距。
优选地，所述手杆的轴线与被清洁表面之间的角度越大，所述支架板与所述被清洁 表面之间的最小间距越小。
优选地，所述手杆轴线与所述被清洁表面之间的角度在15度至70度之间，所述支架板与所述被清洁表面之间的最小间距在4mm至25mm之间。
优选地，所述支架板靠近被清洁表面的一端设有限制部，定义所述限制部在所述滚刷的轴向上投影的轮廓线为第一线条，定义所述滚刷在其轴向上的投影为轴向投影轮廓线，所述第一线条与所述滚刷的轴向投影轮廓线之间的距离不等。
优选地，所述限制部具有靠近所述被清洁表面的第一端部，所述第一端部的投影为所述第一线条中与所述滚刷的轴向投影轮廓线的距离最短的部分。
优选地，所述第一线条与所述滚刷的轴向投影轮廓线之间的距离自所述第一端部沿所述第一线条的延伸方向上逐渐增大。
优选地，所述限制部的部分外轮廓大致为弧形结构，所述第一线条关于所述手杆的轴线对称设置。
优选地，所述支架板设置为两个，所述滚刷可转动的固定在两个所述支架板之间；或者
所述滚刷可转动的固定在夹持件上，所述夹持件的一端固定设置在所述连接件上。
优选地，所述电动清洁刷还包括能够调节在不同操作位置下所述支架板与所述被清洁表面之间的最小间距的调节结构；所述调节结构包括：位于所述支架板上靠近被清洁表面一端且部分外轮廓呈弧形的限制部；弹性元件，所述限制部通过所述弹性元件连接在所述支架板上，所述弹性元件受力产生收缩或者伸长时，所述限制部能够相对被清洁面移动。
优选地，所述滚刷的转轴安装在所述支架板上，所述电动清洁刷还包括能够调节不同操作位置下所述支架板与所述被清洁表面之间的最小间距的调节结构；所述调节结构包括：设置在所述支架板和所述滚刷的转轴之间第一弹性件，通过所述第一弹性件使得所述滚刷的转轴相对所述支架板能够产生位移，以使所述电动清洁刷在不同的工作位置时所述支架板与被清洁表面之间的最小间距不同。
优选地，所述支架板上开设有供所述滚刷的转轴移动的开孔，所述滚刷的转轴安装在所述开孔中；在竖直方向上，所述开孔具有供所述滚刷的转轴进行移动的空间。
优选地，所述电动清洁刷还包括：安装在所述滚刷的转轴上的第一带轮；第二带轮；对所述第一带轮和第二带轮进行传动的皮带；张紧轮，所述张紧轮的一侧抵住所述皮带以调节所述皮带松紧程度。
优选地，所述张紧轮能够在垂直于所述第一带轮和所述第二带轮两者形成的直线的方向上进行移动。
优选地，所述张紧轮与所述支架板之间设置有第二弹性件，通过所述第二弹性件使得所述张紧轮相对所述支架板能够产生位移，以使所述张紧轮在垂直于所述第一带轮和所述第二带轮两者形成的直线的方向上移动。
本发明的有益效果在于：本发明所提供的电动清洁刷可自动调整刷毛的最大有效工作长度以此达到控制刷毛与地面的摩擦力的效果，有效防止电动清洁刷产生过大的反踢力，满足用户在使用反转滚刷类电动清洁刷清洁工作时具有较小反踢力的需求，尤其是清洁粗糙面时也能保持较好的稳定性，即使电动清洁刷手杆抬的过高或者施加在电动清洁刷上的压力过大，电动清洁刷都不会产生较大或过快的摩擦力、反踢力或反向行走行程，提升电动清洁刷的易用性，增加了清洁的效率。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，并可依照说明书的内容予以实施，以下以本发明的较佳实施例并配合附图详细说明如后。
附图说明
在此描述的附图仅用于解释目的，而不意图以任何方式来限制本发明公开的范围。另外，图中的各部件的形状和比例尺寸等仅为示意性的，用于帮助对本发明的理解，并不是具体限定本发明各部件的形状和比例尺寸。本领域的技术人员在本发明的教导下，可以根据具体情况选择各种可能的形状和比例尺寸来实施本发明。
图1为本发明第一实施例所示的电动清洁刷的结构示意图；
图2为图1中电动清洁刷在另一方向的结构示意图；
图3为第一实施例中的第一优选方案的使用示意图；
图4为第一实施例中的第二优选方案的使用示意图；
图5为第一实施例中的第三优选方案的使用示意图；
图6为本发明第二实施例所示的电动清洁刷的结构示意图；
图7为图6中电动清洁刷在另一方向的结构示意图；
图8为本发明第三实施例所示的电动清洁刷的结构示意图。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施 例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是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或元件必须具有特定的方位、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。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
此外，下面所描述的本发明不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
请参见图1和图2，本发明第一实施例所示的电动清洁刷10包括供操作者握持的手杆11、与手杆11的一端连接的连接件12、安装在连接件12上的滚刷13以及固定在连接件12上的两个支架板14，支架板14能够支撑固定滚刷13并将其与连接件12连接。该连接件12和滚刷13均位于手杆11的中轴线上，本实施例中，该手杆11的中轴线可称之为第一中轴线，在图1中标号为x。
手杆11为细长杆体状，其远离连接件一端连接有电源。连接件12包括一个圆柱体121和设置在圆柱体121的半圆柱壁上的类圆台122，类圆台122截面较大的一端与圆柱体121固定，类圆台122截面较小的一端与手杆11固定连接，连接件12中还设有用于驱动滚刷13进行旋转作业的驱动电机(未图示)，支架板14的其中一个设有传动机构(未图示)，用于将驱动电机的旋转力传递至滚刷13。
滚刷13为圆柱体结构，滚刷13包括滚轴(未图示)、套设在滚轴上的用以在被清洁面进行滚动的滚筒(未图示)以及包覆在滚筒壁的毛刷层(未图示)。毛刷层形成圆柱形结构，毛刷层固定在滚筒上，随着滚筒的滚动而同步滚动。毛刷层与被清洁面接触的部分在外力的作用下沿滚刷13的径向向内发生形变，毛刷层上的刷毛形成了与被清洁 面接触的清洁部，以此来清洁与刷毛接触的被清洁面。
两个完全相同的支架板14面对面平行设置，两个支架板14分别对称设置在滚刷的两侧。支架板14具有限制部141和固定部142，限制部141和固定部142一体式延伸形成支架板14，两个支架板14的限制部141对称设置在滚刷13的两侧，两个支架板14的固定部142对称固定于连接件12的两侧。固定部142的外轮廓包括长方形结构和与长方形短边一端相接的半圆形结构，限制部141的外轮廓为不规则弧形结构。于滚刷13的轴线方向上，限制部141的投影位于滚刷13的端面内，在滚刷13的轴向方向上限制部141的投影的轮廓线为第一线条。第一线条可以关于手杆11的轴线对称设置。定义所述滚刷13在其轴向上的投影为轴向投影轮廓线。第一线条与滚刷13的端面的边缘之间的距离不等，即第一线条与滚刷13的轴向投影轮廓线之间的距离不等，限制部141限制滚刷13在外力的作用下沿径向内凹的形变量。限制部141具有靠近被清洁表面的第一端部1411，第一端部1411可与被清洁面发生直接接触，第一端部1411在滚刷13端面的投影为第一线条中与滚刷13的轴向投影轮廓线的距离相对较短的部分或最短的部分；于滚刷13的轴线方向上，第一端部1411的投影位于第一中轴线x上。第一线条与滚刷13的端面的边缘之间的距离自第一端部1411的投影向上逐渐增大，即第一线条与所述滚刷13的轴向投影轮廓线之间的距离自第一端部沿第一线条的延伸方向上逐渐增大。电动清洁刷10的刷毛有效工作长度为毛刷层与被清洁面接触的部分到第一线条在与被清洁面垂直方向上的距离，毛刷层与被清洁面接触的部分不同，从而刷毛有效工作长度不同。本实施例所示的电动清洁刷10的刷毛有效工作长度可根据毛刷层与被清洁面接触的部分的改变而发生改变，以此改变毛刷层上的刷毛与被清洁面接触形成的清洁部，从而改变电动清洁刷10与被清洁面接触时产生的摩擦力，提高电动清洁刷10的实用性和易用性。
本实施例中，限制部141在滚刷13的端面的投影位于第一中轴线x上的两侧不对称设置。在其他实施例中，限制部141在滚刷13的端面的投影位于第一中轴线x上的两侧可对称设置，此电动清洁刷10的第一线条与滚刷13端面的边缘之间的距离自第一端部1411的投影点向两端面的外侧方向向上都逐渐增大，并且两侧的第一线条与滚刷13的端面的边缘之间的距离同步增大。
此实施例中，滚刷13与连接件12的连接方式还可以为：滚刷13可转动的固定在两个支架板14之间。具体的，滚轴固定在两个支架板14之间，两个支架板14对称固定在连接件12两侧。在其他实施例中，滚刷13与连接件12的连接方式可为：滚刷13可转动的固定在夹持件(未图示)上，夹持件的一端固定设置在连接件12上。具体的，滚轴 固定于夹持件上，夹持件的一端固定设置在连接件12上，两个支架板14对称固定在连接件12两侧，两个支架板14的限制部141位于滚刷13的两个端面的外侧。
本实施例所示的电动清洁刷10，毛刷层与被清洁面的接触位置可以通过控制于滚动方向上手杆11所在的第一中轴线x和地面夹角来改变，从而改变刷毛的有效工作长度。例如，手杆11轴线与被清洁表面之间的角度在15度至70度之间，支架板14与所述被清洁表面之间的最小间距在4mm至25mm之间。具体的，请参见图3，当于滚动方向上，手杆11所在的第一中轴线x和地面的夹角为30°时，刷毛的最大有效工作长度a为13mm；请参见图4，当于滚动方向上，手杆11所在的第一中轴线x和地面的夹角为45°时，刷毛最大有效工作长度b为10mm；请参见图5，当于滚动方向，上手杆11所在的第一中轴线x和地面的夹角70°时，刷毛最大有效工作长度c为4mm；当于滚动方向上，手杆11所在的第一中轴线x和地面的夹角为80度时，刷毛最大有效工作长度为2mm(未图示)。滚刷13以转轴为中心相对支架板14朝向操作者的方向旋转，此电动清洁刷10工作时，即使手杆11抬的过高，于滚动方向上，手杆11所在的第一中轴线x和地面的夹角过大，但因为相应的刷毛最大有效工作长度变小，故，毛刷层与被清洁面之间产生的摩擦力不会导致电动清洁刷10反转，保证了电动清洁刷10的稳定性和实用性。从上可以看出，手杆11具有至少两个操作位置，在第一操作位置时手杆11的轴线与被清洁表面之间的夹角大于在第二操作位置时手杆11的轴线与被清洁表面之间的夹角；在第一操作位置时支架板14与被清洁表面之间的最小间距小于在第二操作位置时支架板14与被清洁表面之间的最小间距。手杆11的轴线与被清洁表面之间的角度越大，支架板14与被清洁表面之间的最小间距越小。
请参见图6和图7，本发明第二实施例所示的电动清洁刷20包括手杆21、与手杆21的一端连接的连接件22、安装在连接件22上的滚刷23，固定在连接件22上的两个支架板24。连接件22和支架板24位于手杆21的中轴线上，本实施例中，该手杆21的中轴线可称之为第二中轴线，在图5中标号为y。本实施例中的手杆21、连接件22、滚刷23、以及驱动滚刷23转动的方式与第一实施例所示的相同，在此不再赘述。
两个完全相同的支架板24面对面平行设置，支架板24具有限制部241和固定部242，限制部241和固定部242由弹性件243连接形成了支架板24。两个支架板24的限制部241对称设置在滚刷23的两侧，两个支架板24的固定部242对称固定于连接件22的两侧。固定部242的外轮廓包括长方形结构和与长方形短边一端相接的半圆形结构，限制部241的外轮廓具有可与在被清洁面接触的弧形部，该弧形部为1/2半圆结构，限制部 241限制滚刷23在外力的作用下沿径向内凹的形变量。于滚动方向上，限制部241的投影位于滚刷23的端面内，在滚刷23的轴向方向上，限制部241的投影的轮廓线为第二线条，第二线条的轴线与手杆21的第二中轴线y相交并垂直。本实施例中，弹性件243为弹簧。
本实施例中，滚刷23与连接件22的连接方式可为：滚刷23可转动的固定在夹持件(未图示)上，夹持件的一端固定设置在连接件22上。具体的，滚轴固定一个夹持件上，夹持件的一端固定设置在连接件22上，两个支架板24对称固定在连接件22两侧，两个支架板24的限制部241位于滚刷23的两个端面的外侧。
电动清洁刷20的刷毛有效工作长度为毛刷层与被清洁面接触的部分到第二线条在与被清洁面垂直方向上的距离，第二线条位置的改变带动刷毛有效工作长度改变。当电动清洁刷20与被清洁面接触，向电动清洁刷20施加压力工作时，限制部241在被清洁面的作用下，相对滚刷23移动，移动方向同手杆21的中轴线的方向，即第二中轴线y。具体的，当没有压力施加在此电动清洁刷20上时，弹簧为原始状态，当有压力施加在电动清洁刷20上时，滚刷23在被清洁面的作用下挤压变形，限制部241与被清洁面接触，并在被清洁面的作用下，弹簧发生压缩变形，带动限制部241相对滚刷23移动，限制部241的投影在手杆21的第二中轴线y的方向移动，第二线条位置发生改变，从而电动清洁刷20的刷毛有效工作长度发生改变。施加在电动清洁刷20上的压力不同时，弹簧发生不同的压缩变形，限制部241的投影在手杆21的第二中轴线y的方向移动的距离不同，第二线条位置发生的改变不同，产生不同的刷毛有效工作长度。
本实施例所示的电动清洁刷20的刷毛有效工作长度可根据施加在电动清洁刷20的压力的改变而发生改变，从而改变电动清洁刷20与被清洁面接触时产生的摩擦力。施加在电动清洁刷20的压力过大时，由于限制部241限制滚刷23在外力的作用下沿径向内凹的形变量，刷毛有效工作长度得到限制，电动清洁刷20与被清洁面接触产生较小的摩擦力和较小的反踢力。此电动清洁刷20可根据实际需求来改变刷毛有效工作长度，以此改变电动清洁刷20与被清洁面接触产生的摩擦力，提高电动清洁刷20的实用性和易用性。
请参见图8，本发明第三实施例所示的电动清洁刷30包括手杆31、与手杆31的一端连接的连接件32、滚刷33，固定在连接件32上的两个支架板34。两个支架板34分别固定连接在连接件32的两侧。滚刷33可以安装连接在支架板34上，例如滚刷33的两端分别安装连接在两个支架板34上。连接件32和支架板34位于手杆31的中轴线方 向上，本实施例中，该手杆31的中轴线可称之为第三中轴线，在图8中标号为z。两个完全相同的支架板34面对面平行设置。支架板34具有限制部341和固定部342。两个支架板34的限制部341对称设置在滚刷33的两侧，两个支架板34的固定部342对称固定于连接件32的两侧。固定部342和限制部341的结构可以如上述任一实施例所描述，在此不在赘述。限制部341限制滚刷33在外力的作用下沿径向内凹的形变量。在滚刷33的轴向上，限制部341的投影的轮廓线为第三线条，第三线条的轴线与手杆31的第三中轴线z相交并垂直。
作为可行的，滚刷33与支架板34的连接方式可为：滚刷33可转动的连接在支架板34上。如滚刷33的转轴分别插设在支架板34上。调节结构可以包括：设置在支架板34和滚刷33的转轴之间第一弹性件35，通过第一弹性件35使得滚刷33的转轴相对支架板34能够产生位移，以使电动清洁刷30在不同的工作位置时支架板34与地面之间的最小间距不同。第一弹性件35可以是弹簧一类的机构。
上述实施方式具体而言，支架板34上可以开设有供滚刷33的转轴移动的开孔，滚刷33的转轴安装在开孔中。在竖直方向上，开孔具有供滚刷33的转轴进行移动的空间。该开孔在竖直方向上具有延伸的趋势，也就是说，滚刷33的转轴在竖直方向能够产生相对位移即可。第一弹性件35可以一端抵住支架板34，另一端抵住滚刷33的转轴，从而能够给滚刷33一个至少部分是竖直向下的力。这样以后，当没有压力施加在此电动清洁刷30上时，第一弹性件35为原始状态，当有压力施加在电动清洁刷30上时，滚刷33在被清洁面的作用下挤压变形，从而受到一个向上的力，其通过滚刷33的转轴传递至第一弹性件35上，第一弹性件35发生压缩变形，滚刷33相对支架板34向上移动，从而电动清洁刷30的刷毛有效工作长度发生改变。施加在电动清洁刷30上的压力不同时，第一弹性件35发生不同的压缩变形，限制部341的投影在滚刷33的端面内的位置发生改变，即第三线条位置发生的改变不同，因此，产生不同的刷毛有效工作长度。在上述实施方式中，电动清洁刷30在不同的工作位置时，用户的手操作着手杆31，手杆31的轴线与地面之间的夹角不同，因此，滚刷33向下作用在被清洁面上的压力不同，因此，滚刷33在被清洁面的作用下挤压变形不同，导致第一弹性件35发生压缩变形不同，再导致滚刷33相对支架板34向上移动的距离不同，最后导致支架板34与地面之间的最小间距不同。
电动清洁刷30可以包括：安装在滚刷33的转轴上的第一带轮36；第二带轮37；对第一带轮36和第二带轮37进行传动的传动带38；张紧轮39，张紧轮39的一侧抵住传 动带38以调节传动带38松紧程度。第一带轮36与转轴固定连接，以使第一带轮36能带动滚刷33转动。第二带轮37可以安装在支架板34的上部，即支架板34与连接件32固定连接的地方处，第二带轮37通过传动带38带动第一带轮36转动，从而实现滚刷33的转动。由于滚刷33的转轴在竖直方向能够产生相对位移，因此，第一带轮36和第二带轮37之间的距离会发生变动，所以传动带38的松紧程度需要进行调节。
在上述实施方式中，作为可行的，张紧轮39能够在垂直于第一带轮36和第二带轮37两者形成的直线的方向上产生位移。例如，张紧轮39与支架板34之间设置有第二弹性件310，通过第二弹性件310使得张紧轮39相对支架板34能够产生位移，以使张紧轮39在垂直于第一带轮36和第二带轮37两者形成的直线的方向上移动。第二弹性件310可以是弹簧一类的机构。当第一带轮36和第二带轮37之间的距离增大时，传动带38变紧，同时传动带38向张紧轮39施加的压力增大，第二弹性件310收缩，张紧轮39向第一带轮36和第二带轮37两者形成的直线靠近。当第一带轮36和第二带轮37之间的距离缩小时，传动带38变松，此时，第二弹性件310张开，以推动张紧轮39向第一带轮36和第二带轮37两者形成的直线远离，从而使得传动带38的曲折程度增大，以弥补第一带轮36和第二带轮37之间缩小的距离。
在其它可行的方式中，张紧轮39能够在第一带轮36和第二带轮37两者形成的直线的方向上产生位移，张紧轮39不位于第一带轮36和第二带轮37两者形成的直线。张紧轮39与支架板34之间设置有第二弹性件310，以控制张紧轮39的位移。当第一带轮36和第二带轮37之间的距离增大时，张紧轮39在第二弹性件310和传动带38的作用下向第一带轮36和第二带轮37两者形成的线段的中垂线方向移动。当第一带轮36和第二带轮37之间的距离减小时，张紧轮39在第二弹性件310和传动带38的作用下向第一带轮36和第二带轮37两者形成的线段的中垂线方向远离，以弥补第一带轮36和第二带轮37之间缩小的距离。
在上述两种实施方式中，通过第二弹性件310可以使得张紧轮39产生位移并使其一侧贴紧传动带38，从而调节传动带38的曲折程度，进而适应第一带轮36和第二带轮37之间距离的变化。
在另一种实施方式中，支架板34上可以具有沿重力方向延伸趋势的滑动槽，张紧轮39能够在滑动槽中滑动，在张紧轮39自身重力的作用下调节传动带38的松紧程度。当第一带轮36和第二带轮37之间的距离减小时，张紧轮39在自身重力的作用下沿着滑动槽向下移动，从而使得传动带38的曲折程度增大，以弥补第一带轮36和第二带轮37之 间缩小的距离。当第一带轮36和第二带轮37之间的距离增大时，传动带38绷紧，即传动带38的曲折程度减小，传动带38抵住张紧轮39使其沿着滑动槽向上移动。
在上述几个实施方式中，如图8所示，用于驱动滚刷33进行旋转作业的驱动电机与第二带轮37相传动连接，从而通过带轮和传动带38的传动实现驱动滚刷33进行旋转作业。
第一、第二和第三实施例所示的可调整刷毛最大有效工作长度的结构不但可以应用到第一、第二和第三实施例中的手动清洁刷，而且还可以应用到交流、直流电动清洁刷。
综上，本发明所提供的电动清洁刷10、20可自动调整刷毛的最大有效工作长度以此达到控制刷毛与地面的摩擦力的效果，有效防止电动清洁刷10、20产生过大的反踢力，满足用户在使用反转滚刷类电动清洁刷10、20清洁工作时具有较小反踢力的需求，尤其是清洁粗糙面时也能保持较好的稳定性，即使电动清洁刷10、20手杆抬的过高或者施加在电动清洁刷10、20上的压力过大，电动清洁刷10、20都不会产生较大或过快的摩擦力、反踢力或反向行走行程，提升电动清洁刷10、20的易用性，增加了清洁的效率。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (14)

  1. 一种电动清洁刷，所述电动清洁刷包括供操作者握持的手杆；与所述手杆的一端连接的连接件；滚刷，所述滚刷具有与被清洁表面接触的毛刷层；固定在所述连接件上的支架板，所述滚刷以转轴为中心相对所述支架板朝向操作者的方向旋转，其特征在于，所述手杆具有至少两个操作位置，在第一操作位置时所述手杆的轴线与被清洁表面之间的夹角大于在第二操作位置时所述手杆的轴线与被清洁表面之间的夹角；在第一操作位置时所述支架板与被清洁表面之间的最小间距小于在第二操作位置时所述支架板与被清洁表面之间的最小间距。
  2. 如权利要求1所述的电动清洁刷，其特征在于，所述手杆的轴线与被清洁表面之间的角度越大，所述支架板与所述被清洁表面之间的最小间距越小。
  3. 如权利要求2所述的电动清洁刷，其特征在于，所述手杆轴线与所述被清洁表面之间的角度在15度至70度之间，所述支架板与所述被清洁表面之间的最小间距在4mm至25mm之间。
  4. 如权利要求1所述的电动清洁刷，其特征在于，所述支架板靠近被清洁表面的一端设有限制部，定义所述限制部在所述清洁刷的轴向上投影的轮廓线为第一线条，定义所述滚刷在其轴向上的投影为轴向投影轮廓线，所述第一线条与所述滚刷的轴向投影轮廓线之间的距离不等。
  5. 如权利要求4所述的电动清洁刷，其特征在于，所述限制部具有靠近所述被清洁表面的第一端部，所述第一端部的投影为所述第一线条中与所述滚刷的轴向投影轮廓线的距离最短的部分。
  6. 如权利要求5所述的电动清洁刷，其特征在于，所述第一线条与所述滚刷的轴向投影轮廓线之间的距离自所述第一端部沿所述第一线条的延伸方向上逐渐增大。
  7. 如权利要求6所述的电动清洁刷，其特征在于，所述限制部的部分外轮廓大致为弧形结构，所述第一线条关于所述手杆的轴线对称设置。
  8. 如权利要求4所述的电动清洁刷，其特征在于，所述支架板设置为两个，所述滚刷可转动的固定在两个所述支架板之间；或者
    所述滚刷可转动的固定在夹持件上，所述夹持件的一端固定设置在所述连接件上。
  9. 如权利要求1所述的电动清洁刷，其特征在于，所述电动清洁刷还包括能够调节在不同操作位置下所述支架板与所述被清洁表面之间的最小间距的调节结构；所述调节结构包括：位于所述支架板上靠近被清洁表面一端且部分外轮廓呈弧形的限制部；弹 性元件，所述限制部通过所述弹性元件连接在所述支架板上，所述弹性元件受力产生收缩或者伸长时，所述限制部能够相对被清洁面移动。
  10. 如权利要求1所述的电动清洁刷，其特征在于，所述滚刷的转轴安装在所述支架板上，所述电动清洁刷还包括能够调节不同操作位置下所述支架板与所述被清洁表面之间的最小间距的调节结构；所述调节结构包括：设置在所述支架板和所述滚刷的转轴之间第一弹性件，通过所述第一弹性件使得所述滚刷的转轴相对所述支架板能够产生位移，以使所述电动清洁刷在不同的工作位置时所述支架板与被清洁表面之间的最小间距不同。
  11. 如权利要求10所述的电动清洁刷，其特征在于，所述支架板上开设有供所述滚刷的转轴移动的开孔，所述滚刷的转轴安装在所述开孔中；在竖直方向上，所述开孔具有供所述滚刷的转轴进行移动的空间。
  12. 如权利要求11所述的电动清洁刷，其特征在于，所述电动清洁刷还包括：安装在所述滚刷的转轴上的第一带轮；第二带轮；对所述第一带轮和第二带轮进行传动的皮带；张紧轮，所述张紧轮的一侧抵住所述皮带以调节所述皮带松紧程度。
  13. 如权利要求12所述的电动清洁刷，其特征在于，所述张紧轮能够在垂直于所述第一带轮和所述第二带轮两者形成的直线的方向上进行移动。
  14. 如权利要求13所述的电动清洁刷，其特征在于，所述张紧轮与所述支架板之间设置有第二弹性件，通过所述第二弹性件使得所述张紧轮相对所述支架板能够产生位移，以使所述张紧轮在垂直于所述第一带轮和所述第二带轮两者形成的直线的方向上移动。
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CN114747992A (zh) * 2022-04-15 2022-07-15 小窝智能(北京)科技有限公司 一种清洁设备
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