CN115349785A

CN115349785A - Cleaner with reversible rolling brush and rolling brush reversing implementation method

Info

Publication number: CN115349785A
Application number: CN202211050669.2A
Authority: CN
Inventors: 安建鑫; 潘琦
Original assignee: Shenzhen Jieshen Technology Co ltd
Current assignee: Shenzhen Jieshen Technology Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-18
Anticipated expiration: 2042-08-31
Also published as: CN115349785B

Abstract

The invention relates to the technical field of cleaning equipment, in particular to a cleaner with a reversible rolling brush and a method for realizing the reversal of the rolling brush, wherein a driving motor of the rolling brush rotates forwards during cleaning of a floor washing machine, and the method comprises the following steps: acquiring an input switching value signal or a real-time current signal of the driving motor; judging whether the switching value signal is the same as a preset signal or not, if so, keeping the driving motor to rotate forwards, and simultaneously outputting and starting a reverse rotation mechanism to drive the rolling brush to rotate backwards; converting the current signal into a digital voltage value; comparing the digital voltage value with a preset voltage value; if the digital voltage value is smaller than the preset voltage value, the driving motor keeps rotating forwards, and meanwhile, the reversing mechanism is output and started to drive the rolling brush to rotate backwards. Can solve effectively in the cleaning work of scrubber round brush time, cellosilk or fine hair on the round brush can be pressed by the scraper blade and face down the deformation, lead to clear effect variation, have reduced the problem of clear efficiency.

Description

Cleaner with reversible rolling brush and rolling brush reversing implementation method

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to a cleaner with a reversible rolling brush and a rolling brush reversal implementation method.

Background

In the cleaning floor washing machines commonly used in the prior art, the cleaning function is generally realized by a rolling brush. The surface of the rolling brush is provided with fiber yarns or fluff, the fiber yarns or the fluff on the surface of the rolling brush can adsorb dirt on the ground when the ground is cleaned, and the cleaning floor washing machine is also provided with a scraper blade matched with the rolling brush, so that the dirt on the rolling brush and the sewage can be scraped and then sucked into a sewage tank, thereby realizing the cleaning process.

Because the direct current brush motor has the characteristics of large starting torque, stable speed change and simple and reliable operation control, the cleaning floor machine on the market at present mostly uses the direct current brush motor as a power driving source. However, the roller brush of the floor washing machine on the market at present usually rotates along one direction, and during long-time cleaning work, the fiber filaments or the fluff on the roller brush can be pressed by the scraper to bend downwards and deform and cling to the roller brush, so that the contact amount of the fiber filaments or the fluff with the ground is reduced, the cleaning effect is poor, and the cleaning efficiency is reduced; therefore, when it is found that the deformation of the fiber yarn or the fluff is serious, in order to reduce the waiting time of the user in the cleaning process as much as possible, the motor needs to be controlled to switch from forward rotation to reverse rotation (maintaining for several seconds) to forward rotation in a short time, and the reverse rotation (maintaining for several seconds) is used for restoring the bristles on the surface of the rolling brush.

Disclosure of Invention

Solves the technical problem

Aiming at the defects in the prior art, the invention provides a cleaner with a reversible rolling brush and a method for realizing the reversal of the rolling brush, which can effectively solve the problems that in the cleaning work of the floor washing machine during the rolling brush time, fiber yarns or fluff on the rolling brush can be pressed by a scraper blade to face down and deform, so that the cleaning effect is poor and the cleaning efficiency is reduced.

Technical scheme

In order to realize the purpose, the invention is realized by the following technical scheme:

the invention provides a method for realizing reversal of a rolling brush, which comprises the following steps:

acquiring a real-time current signal of a driving motor when the roller brush rotates forwards;

converting the current signal into a digital voltage value;

comparing the digital voltage value with a preset voltage value; and if the digital voltage value is smaller than the preset voltage value, triggering and starting a rolling brush reversing mode.

The invention provides a cleaner with a reversible rolling brush, which comprises an MCU (microprogrammed control Unit) controller, the rolling brush, a driving motor for driving the rolling brush to rotate and a reversing mechanism for driving the rolling brush to reverse, wherein the driving motor is linked with the rolling brush through a reduction gear set;

wherein the reversing mechanism includes:

the supporting plate is movably arranged on the box body of the reduction gear set;

the first gear is rotatably connected to the upper side of the movable supporting plate, and a plurality of first gears are meshed with each other;

the second gear is rotatably connected to the lower side of the movable supporting plate, and a plurality of second gears are meshed with each other;

the direct-acting mechanism is used for dragging the supporting plate to reciprocate up and down between the connecting gears, and the first gear and the second gear can be respectively meshed with the connecting gears on the two sides of the first gear and the second gear simultaneously; one of the first gear and the second gear is odd, and the other is even.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

an MCU controller of the floor washing machine is used for acquiring an external input signal or acquiring a current signal of a driving motor, wherein the external input signal has various signal types, such as a related starting/shutdown signal or a switch signal actively pressed by a user, and the user can realize automatic reversal of the rolling brush under various conditions according to requirements; simultaneously, because the round brush is in the cleaning work at the scrubber, its cellosilk or fine hair are pressed by the scraper and are bending over down the deformation back, the round brush ground contact volume reduces, then driving motor's load can reduce, and the electric current can reduce, and according to this principle, the MCU controller can be according to the current signal that acquires in real time, and whether the cellosilk of judging the round brush or fine hair are pressed and are bent over seriously and surpass the threshold value, opens the round brush reversal, maintains the reversal of certain time, and the cellosilk or the fine hair on round brush surface reconversion.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a logic flow diagram of a rolling brush inversion method of the present invention;

FIG. 2 is a schematic view of the current collection principle of the driving motor of the present invention;

FIG. 3 is a schematic view of the overall structure of the scrubber of the present invention;

FIG. 4 is a schematic view of a roller brush portion of the mop head of the present invention;

FIG. 5 is a schematic view of the position of the roller brush and the wiper strip of the present invention;

FIG. 6 is a schematic view of the reversing mechanism of the present invention for achieving forward and reverse rotation of the roller brush;

FIG. 7 is an exploded view of the mounting of the support plate, first gear and second gear of the present invention in a housing;

FIG. 8 is a schematic view of the installation of the translation mechanism of the present invention in the mounting slot;

FIG. 9 is a perspective view of the friction pack construction of the present invention;

FIG. 10 is a schematic view of the guide action travel bar displacement of the present invention;

FIG. 11 is a schematic diagram of a drive circuit for driving a motor according to the present invention;

the reference numerals in the drawings denote: 10. a body; 20. a handle; 30. dragging a head; 31. rolling and brushing; 32. scraping the strips; 33. a drive motor; 34. a box body; 341. mounting grooves; 342. a chute; 35. a cover plate; 36. a gear set; 37. engaging the gears; 40. a reversing mechanism; 41. a support plate; 42. a first gear; 43. a second gear; 44. the screw rod transmission assembly; 45. a stepping motor; 46. a positioning structure; 461. positioning holes; 462. a positioning column; 463. a direct-acting electromagnet; 47. a slider; 50. a friction assembly; 51. a travel bar; 52. a guide member; 521. a guide groove; 522. a first plane; 523. a transition bevel; 524. a second plane; 53. a first friction head; 54. a second friction head; 55. an elastic telescopic rod; 60. a first proximity switch; 70. a second proximity switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

The first embodiment is as follows:

the invention provides a cleaner with a reversible rolling brush and a method for realizing the reversal of the rolling brush, which are shown in figure 3; the roller brush is mainly used for a floor washing machine, the existing floor washing machine main body mechanism comprises three parts, namely a machine body 10, a handle 20 and a mop head 30, the basic cleaning principle is the prior art, and the brief description is provided here: the rolling brush 31 rotating at high speed on the mop head 30 is used for absorbing dirt on the ground, and the scraping strip 32 matched with the rolling brush can scrape the dirt and the sewage on the rolling brush and suck the scraped sewage into the sewage tank, so that the cleaning process is realized. For convenience of explanation of the normal rotation and the reverse rotation of the drum brush 31 and the drive motor 33, it is specified that the state of the drum brush 31 and the drive motor 33 is the normal rotation in the cleaning operation of the floor washing machine.

Further illustrating the design of the scheme:

the embodiment provides a method for realizing reverse rotation of a rolling brush, and with reference to fig. 1 and 2, the method includes the following steps:

acquiring a real-time current signal of the driving motor 33 when the rolling brush 31 rotates forwards;

converting the current signal into a digital voltage value;

Under the triggering condition of entering the rolling brush reversing mode, an input switching value signal can be acquired through the MCU controller; and if the switching value signal is the same as the preset signal, triggering and starting a rolling brush reversing mode.

In the step, "acquiring the input switching value signal" may be a set associated power-on/power-off signal, that is, the rolling brush 31 may be reversed when the device is powered on or powered off to restore the original shape of the brush bristles; or a switch signal which is actively pressed by the user, the user can realize the automatic reverse rotation of the rolling brush 31 under various conditions according to the requirement, for example: the keys are continuously pressed for 2 times in the long press of the keys 3s or 2s, and the MCU controller monitors that the switching value signal is a continuous high level signal in a certain time or a high level signal for a certain number of times in unit time, so that the rolling brush 31 can be controlled to rotate reversely under multiple conditions.

Wherein, "driving motor 33's real-time current signal" is owing to round brush 31 is in scrubbing machine cleaning work in the step, and its cellosilk or fine hair are pressed by the scraping board and are crouched down the deformation back, and the round brush 31 ground contact volume reduces, then driving motor 33's load can reduce, and the electric current can reduce, and according to this principle, the MCU controller can be according to the current signal that acquires in real time, judges whether the cellosilk of round brush 31 or fine hair are pressed to lie prone seriously. In the embodiment, the current detection sensor is connected in series with the driving motor 33 to acquire the analog voltage values at two ends of the driving motor 33, then the analog voltage values are processed into digital voltage signals through the A/D converter, the digital voltage signals are sent to the MCU controller to be compared with a preset threshold value, and when the digital voltage signals exceed the threshold value, the MCU controller controls the starting of the brush reversal mode.

Preferably, in this embodiment, the setting of the digital voltage value as an average value of a plurality of digital voltages within a certain time period includes the specific steps of:

taking the value of the digital voltage which is smaller than the preset voltage value for the first time in the comparison as first data;

acquiring all digital voltage data within a certain time after the first data;

calculating the first data and obtaining an arithmetic average of the digital voltage data.

The method of averaging within a certain time can effectively avoid ensuring the reliability of data, and the load of the rolling brush 31 is reduced continuously for a certain time, so that whether the fiber filaments or the fluff of the rolling brush 31 is pressed seriously is judged. In this embodiment, after the first data is acquired, all digital voltage data within 3s are acquired, in this embodiment, the MCU controller 1s is designed to acquire 20 digital voltage data, and 1 data can be acquired by setting the timer to interrupt 20 times every 1s and triggering and starting the a/D converter every 0.5 ms.

Specifically, referring to fig. 11, when the rolling brush 31 is implemented by triggering the rolling brush reverse rotation starting mode, in this embodiment, a driving circuit for starting forward/reverse rotation of the driving motor is configured at the output end of the MCU controller, where the driving circuit includes a first switch circuit, a second switch circuit, a third switch circuit and a fourth switch circuit, and the driving motor 33 is connected and bridged between the first switch circuit, the second switch circuit, the third switch circuit and the fourth switch circuit.

When the first switch circuit and the fourth switch circuit are turned off simultaneously and the second switch circuit and the third switch circuit are turned on simultaneously, current flows through the second switch circuit and the third switch circuit and flows through the driving motor 33, the driving motor 33 rotates in the forward direction, and the rolling brush 31 is driven to rotate in the forward direction;

when the first switch circuit and the fourth switch circuit are simultaneously conducted, and the second switch circuit and the third switch circuit are simultaneously closed, current flows through the first switch circuit and the fourth switch circuit and flows through the driving motor 33, the driving motor rotates reversely 33, drives the rolling brush 31 to rotate reversely, and enters the rolling brush reversing mode.

The driving motor 33 is a direct current brush motor, and the brush direct current is controlled by a silicon controlled analog circuit through a bridge type driving circuit and is reversed through a carbon brush, so that the forward and reverse rotation of the motor are switched. However, the reversing mode of the direct-current brush motor in the embodiment is directly applied to the floor cleaning machine for use; through specific implementation experiments, the following disadvantages are found:

1. after the direct current brush motor is operated in forward rotation for a long time, the switching of the forward rotation, the reverse rotation (maintaining for a plurality of seconds: 5-10 s) and the forward rotation of the motor is controlled in a short time, so that the current of the motor is increased, the heating of the motor is increased, internal devices are easily damaged, and the service life of the motor is shortened. 2. In addition, when the motor is switched in a reversing way in a short time, the driven gear set 36 is not fully decelerated, stopped and started in a reversing way again under the influence of inertia, and vibration abnormal sound is generated due to hard touch between teeth during starting in the reversing way again, and meanwhile, the gear is easy to be seriously abraded, so that the using effect of a product is influenced. Wherein, the abnormal noise of the reverse rotation starting vibration of the gear set 36 is improved in the time of single time delay reversing for more than 5s, but the heating aggravation of the motor caused by starting reversing is almost unchanged.

Example two:

aiming at the defects existing in the rolling brush reversing mode in the first embodiment, the embodiment provides a novel automatic reversing method for the rolling brush 31 of the floor washing machine, the core of the scheme is that whether the rolling brush 31 needs to be reversed or not can be judged automatically through collected signals, a reversing mechanism 40 capable of changing the rotating direction of the rolling brush 31 is added in a transmission structure in a matching mode, the rolling brush 31 is reversed, in the whole reversing process, the driving motor 33 is not stopped and does not reverse, the driving motor 33 and the gear set 36 run stably, and the problems of vibration abnormal sound and gear abrasion caused by the fact that the heating of the motor is intensified, and the teeth are hard to touch each other when the gear is started in a reversing mode are effectively solved.

Firstly, the method comprises the following steps: a software control section; the automatic reversing method of the rolling brush 31 based on the reversing mechanism 40 comprises the following steps:

acquiring a real-time current signal of the driving motor 33 when the rolling brush rotates forwards;

converting the current signal into a digital voltage value;

comparing the digital voltage value with a preset voltage value; if the digital voltage value is smaller than the preset voltage value, the reversing mechanism 40 is triggered, and the rolling brush reversing mode is started.

In this embodiment, preferably, in the step of starting the reversing mechanism 40, the driving motor 33 is kept rotating in the forward direction, and the input voltage of the driving motor 33 is reduced, so that the driving motor 33 rotates in the forward direction at a low speed. The input voltage of the driving motor 33 is adjusted to be lower for reducing the rotation speed of the gear, so as to be conveniently used with the friction assembly 50 of the subsequent reversing mechanism 40.

Referring to fig. 3-8, the hardware design of the inversion mechanism 40 is:

the driving motor 33 is linked with the rolling brush 31 through a gear reduction box, the gear reduction box comprises a box body 34, a cover plate 35 and a gear set 36 which is arranged in the box body 34, and the reversing mechanism 40 is a power switching component and is in matched transmission between two connecting gears 37 of the gear reduction set 36. In view of installation space and control convenience, the engaging gear 37 in this example is selected as a gear fixed coaxially with the roll brush 31 and its adjacent gear.

The reversing mechanism 40 includes a support plate 41 movably disposed on the housing 34 of the reduction gear set 36;

and a first gear 42 rotatably coupled to an upper side of the movable support plate 41, the plurality of first gears 42 being engaged with each other; and a second gear 43 rotatably coupled to a lower side of the movable support plate 41, the plurality of second gears 43 being engaged with each other;

a direct-acting mechanism for dragging the support plate 41 to reciprocate up and down between the engaging gears 37, wherein the first gear 42 and the second gear 43 can be respectively meshed with the engaging gears 37 on the two sides simultaneously;

the number of the first gear 42 and the second gear 43 is odd, and the number of the other is even.

Above for realizing the core structure that round brush 31 is just, the reversal switches, the number of design first gear 42 is 3 in this embodiment, intermeshing rotates the upside that sets up in backup pad 41, the number of design second gear 43 is 2, intermeshing rotates the downside that sets up in backup pad 41, when being located downside second gear 43 combination and joining gear 37 meshing, driving motor 33 drives round brush 31 corotation, and after straight-moving mechanism drove backup pad 41 and moved to the downside, second gear 43 combination separation, when first gear 42 combination and joining gear 37 meshing, driving motor 33 drove round brush 31 and realizes the corotation. The positive and negative rotation of the rolling brush 31 is adapted by switching the meshed gear set 36, the driving motor 33 does not stop and is not reversed, the switching process is simple, and the operation is stable.

The specific installation of the core components in the box 34 is as follows:

the inside protrusion of lateral wall of box 34 is formed with mounting groove 341, direct-acting mechanism and direct-acting driving piece all set up in mounting groove 341, direct-acting mechanism is screw drive subassembly 44, including lead screw and two linear guide, screw drive subassembly 44 adopts small-size step motor 45 cooperation step motor 45 driver to be the driving source, threaded connection has slider 47 on the lead screw, spout 342 has been seted up along backup pad 41's moving direction on the mounting groove 341, slider 47 slip joint is in spout 342, and slider 47's outer end and backup pad 41 are fixed to be met, two linear guide are used for the auxiliary stay to act on, the stability that backup pad 41 removed improves.

In addition, a positioning structure 46 is arranged between the supporting plate 41 and the box body 34, and the positioning structure 46 is used for limiting and fixing the whole supporting plate 41 after the second gear 43 combination or the first gear 42 combination is meshed with the engaging gear 37, so that the stability of transmission between the gears is ensured. The positioning structure 46 includes a positioning hole 461, a positioning post 462 and a direct-acting driving member, the positioning hole 461 penetrates through the supporting plate 41 and the box 34, the positioning hole 461 includes an upper positioning hole and a lower positioning hole, the positioning post 462 is fixed on the moving pair of the direct-acting driving member, in this embodiment, the direct-acting driving member is a micro direct-acting electromagnet 463, and is fixed at the positioning hole 461 on the lower side by a bracket during installation, when the first gear 42 is engaged with the engaging gears 37 on both sides thereof, the positioning post 462 is inserted into the upper positioning hole 461 in a matching manner, and when the second gear 43 is engaged with the engaging gears 37 on both sides thereof, the positioning post 462 is inserted into the positioning hole 461 on the lower side in a matching manner.

The first proximity switch 60 is fixed at the upper positioning hole 461, the second proximity switch 70 is fixed at the lower positioning hole 461, the first proximity switch 60 or the second proximity switch 70 is used for monitoring whether the positioning post 462 is in place, and the completion of the meshing of the second gear 43 combination or the first gear 42 combination and the engaging gear 37 is marked after the positioning post 462 is in place. The high level signal of the first proximity switch 60 or the second proximity switch 70 is a trigger signal for increasing the input voltage of the driving motor 33, and increases the rotation speed of the driving motor 33.

Referring to fig. 9 and 10, the reversing mechanism 40 further includes a friction assembly 50 disposed on the upper side of the supporting plate 41, and the friction assembly 50 is mentioned above to be used in cooperation with the driving motor 33 at a low speed, and has the main functions of: the gear fixed coaxially with the roller brush 31 among the engaging gears 37 is braked, and the other engaging gear 37 driven by the driving motor 33 at a low speed is further decelerated because the re-engagement between the plane gears is smoother in the low speed state.

The friction assembly 50 includes a moving rod 51 and a guide 52, the guide 52 is fixed on the supporting plate 41, the guide 52 includes a continuous guiding surface, the moving rod 51 is fixed on the box 34 through an elastic expansion rod 55, two ends of the moving rod 51 are respectively located above the two engaging gears 37, two ends of the moving rod 51 are respectively fixed with a first friction head 53 and a second friction head 54, when the guiding surface is tightly attached to the moving rod 51, the moving rod 51 moves along the axial direction of the elastic expansion rod 55, and the first friction head 53 and the second friction head 54 move along the moving rod 51 and can correspondingly contact the surface of the engaging gear 37. In this embodiment, the moving rod 51 is made of a solid rustproof aluminum alloy rod, and has good strength.

The upper side of the guide 52 is a guide groove 521 formed by upper and lower guide surfaces which are distributed at equal intervals, the moving rod 51 passes through the guide groove 521, the guide surfaces comprise a first plane 522, a transition inclined plane 523 and a second plane 524 from two sides to the middle part, the bottom of the first friction head 53 is a rubber block, the bottom of the second friction head 54 is a plurality of uniformly distributed rubber strips, when the moving rod 51 is positioned on the first plane 522, the elastic telescopic rod 55 is in a natural extension state, the first friction head 53 and the second friction head 54 are not combined with the surface of the engaging gear 37, and slowly approach the surface of the engaging gear 37 during the movement of the transition inclined plane 523, when the moving rod 51 is positioned on the second plane 524, the rubber block and the rubber strips respectively contact the surface of the corresponding engaging gear 37, wherein the bottom surface of the rubber block completely abuts against the surface of the gear which is coaxially fixed with the rolling brush 31, the gear in the "power separation state" is braked, and the rubber strips of the second friction head 54 contact the surface of the other engaging gear 37 to rub the gear (at this time, when the second friction head 54 generates a load, the friction head is lower than a nylon drive motor, and the nylon material is not used for driving the friction motor, and the nylon motor is better load is better; when the moving rod 51 moves to the middle of the second plane 524, the first gear 42 or the second gear 43 starts to engage with the two side engaging gears 37, and finishes the engagement when the moving rod 51 moves to the other side transition slope 523.

To sum up: the process of inverting the roller brush 31 to restore the bristles during cleaning is illustrated in conjunction with software and hardware:

1. the MCU controller detects a decrease in current to the drive motor 33;

2. the MCU controller reduces the power supply voltage of the driving motor 33 to enable the driving motor to rotate in a deceleration way, and simultaneously controls the direct-acting electromagnet 463 to be electrified and closed to drive the positioning column 462 to move out of the lower positioning hole 461 of the supporting plate 41 part and execute a 500ms delay start instruction of the stepping motor 45;

3. after the time delay is finished, the stepping motor 45 is started, the support plate 41 moves downwards in a matching manner with the lead screw transmission assembly, the second gear 43 combination is gradually separated from the connecting gear 37 in the whole downwards moving process, and the first gear 42 combination is meshed with the connecting gear 37;

meanwhile, the guide member 52 moves along with the support plate 41 during the downward movement, and the guide member 52 drives the two ends of the moving rod 51 to respectively brake and decelerate the engaging gears 37 at the two sides so as to promote smooth gear engagement;

4. when the first proximity switch 60 located in the upper positioning hole 461 detects the positioning post 462, the MCU controller turns up the power supply voltage of the driving motor 33 at the same time as the completion of the engagement between the first gear 42 combination and the engaging gear 37. In a specific experiment, the first gear 42 combination is engaged with the engaging gear 37 for 1.5 s;

5. regularly keeping the rolling brush 31 to reversely rotate for 5-10s, and enabling the rolling brush 31 to reversely contact the scraping strip 32 to restore the bristles;

6. after the timing is finished, the forward direction of the rolling brush 31 is recovered, and the above steps 3 and 4 are executed in an approximately reverse direction, which is not described herein again.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for realizing rolling brush reversal is characterized by comprising the following steps:

acquiring a real-time current signal of a driving motor when the rolling brush rotates forwards;

converting the current signal into a digital voltage value;

2. The method for implementing rolling brush reversal according to claim 1, further comprising obtaining an input switching value signal;

and judging whether the switching value signal is the same as a preset signal or not, and if so, triggering and starting a rolling brush reverse mode.

3. The method for realizing the reverse rotation of the rolling brush according to claim 1, wherein a driving circuit for starting the forward/reverse rotation of the driving motor is configured at an output end of an MCU controller, and the driving circuit comprises a first switching circuit, a second switching circuit, a third switching circuit and a fourth switching circuit;

when the first switch circuit and the fourth switch circuit are turned off simultaneously and the second switch circuit and the third switch circuit are turned on simultaneously, the driving motor rotates in the forward direction and drives the rolling brush to rotate in the forward direction;

when the first switch circuit and the fourth switch circuit are simultaneously conducted and the second switch circuit and the third switch circuit are simultaneously closed, the driving motor rotates reversely and drives the rolling brush to rotate reversely, and the rolling brush enters a rolling brush reversing mode.

4. The washer with the reversible roller brush and the method for realizing the reverse rotation of the roller brush as claimed in claim 1, wherein the digital voltage value is an average value of a plurality of digital voltages within a certain time period, and the specific steps are as follows:

acquiring all digital voltage data within a certain time after the first data;

5. A cleaner with a reversible rolling brush is characterized by comprising an MCU controller, the rolling brush, a driving motor for driving the rolling brush to rotate and a reversing mechanism for starting the rolling brush to reverse, wherein the driving motor is linked with the rolling brush through a reduction gear set;

wherein the reversing mechanism includes:

the direct-acting mechanism is used for dragging the supporting plate to reciprocate up and down between the connecting gears, and the first gear and the second gear can be respectively meshed with the connecting gears on the two sides of the first gear and the second gear simultaneously;

one of the first gear and the second gear is odd, and the other is even.

6. The cleaning device as claimed in claim 5, wherein a positioning structure is provided between the supporting plate and the housing, the positioning structure comprises a positioning hole, a positioning post and a direct-acting driving member, the positioning hole penetrates through the supporting plate and the housing, the positioning hole comprises an upper positioning hole and a lower positioning hole, the positioning post is fixed on the moving pair of the direct-acting driving member, the positioning post is engaged and inserted in the positioning hole on the upper side when the first gear is simultaneously engaged with the engaging gears on both sides, and the positioning post is engaged and inserted in the positioning hole on the lower side when the second gear is simultaneously engaged with the engaging gears on both sides.

7. The cleaning device of claim 5, further comprising a friction assembly disposed on an upper side of the support plate, wherein the friction assembly includes a moving rod and a guiding member, the guiding member is fixed on the support plate, the guiding member includes a continuous guiding surface, the moving rod is fixed on the housing through an elastic telescopic rod, two ends of the moving rod are respectively located above the two engaging gears, a first friction head and a second friction head are respectively fixed on two ends of the moving rod, when the guiding surface is swept against the moving rod, the moving rod moves along an axial direction of the elastic telescopic rod, and the first friction head and the second friction head move along the moving rod and can correspondingly contact surfaces of the engaging gears.

8. The washer with the reversible rolling brush as claimed in claim 7, wherein the upper side of the guide member is provided with a guide groove formed by upper and lower guide surfaces which are distributed at equal intervals, the moving rod passes through the guide groove, the guide surfaces comprise a first plane, a transition inclined plane and a second plane from two sides to the middle part, the bottom of the first friction head is provided with a rubber block, the bottom of the second friction head is provided with a plurality of uniformly distributed rubber strips, and when the moving rod is arranged on the second plane, the rubber block and the rubber strips are respectively contacted with the surfaces of the corresponding jointed gears; when the moving rod moves to the middle of the second plane, the first gear or the second gear is meshed with the connecting gears on the two sides.

9. The cleaning device with the reversible rolling brush as claimed in claim 5, wherein a mounting groove is formed on the outer side wall of the box body in an inward protruding manner, the linear motion mechanism and the linear motion driving member are both arranged in the mounting groove, the linear motion mechanism is a screw rod transmission assembly, the linear motion driving member is a micro linear motion electromagnet, and the screw rod transmission assembly adopts a small stepping motor as a driving source.

10. The washer with the reversible roller brush as claimed in claim 6, wherein a first proximity switch is fixed at the position hole on the upper side, a second proximity switch is fixed at the position hole on the lower side, and the high level signal of the first proximity switch or the second proximity switch is a trigger signal for increasing the input voltage of the driving motor.