Floor scrubber

Abstract

The floor washing machine comprises a floor brush and a machine body, the floor brush is connected to the machine body through a universal joint, the floor brush comprises a supporting base, a roller unit and a front scraping strip, and the front scraping strip and the roller unit are installed at the two ends of the supporting base respectively; the rolling wheel unit can ascend and descend in the height direction relative to the supporting seat through a guide sliding mechanism, the scrubber further comprises a transmission device and a driving device which are installed on the supporting seat, one end of the transmission device is connected to the rolling wheel unit, the other end of the transmission device is connected to the supporting seat, and the driving device is installed on the supporting seat. The driving device is connected to the transmission device, and the distance between the roller unit and the supporting seat can be increased through the transmission device so as to drive the front scraping strip to descend. When the scrubber passes through the gap, the driving device increases the distance between the roller unit and the supporting seat through the transmission device, the front scraping strip is lowered, water stains at the gap are scraped dry, and no water mark is left.

Description

Technical Field

[0001] The invention relates to a machine, in particular to a floor scrubber. Background Art

[0002] The front scraper bar of the existing disc brush of the scrubber is worn or folded over a long period of time, resulting in a small interference fit between the front scraper bar and the floor. When the scrubber passes through a gap, water marks that cannot be scraped cleanly will appear, resulting in a poor user experience. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a floor scrubber in order to overcome the defect that the floor scrubber in the prior art cannot cleanly scrape water marks at the gaps.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A floor scrubber, comprising a floor brush and a body, wherein the floor brush is connected to the body via a universal joint, the floor brush comprising a support seat, a roller unit and a front scraper bar, the front scraper bar and the roller unit are respectively mounted at both ends of the support seat, the roller unit can be raised and lowered in a height direction relative to the support seat via a guide slide mechanism, the floor scrubber also comprises a transmission device and a drive device mounted on the support seat, one end of the transmission device is connected to the roller unit, and the other end of the transmission device is connected to the support seat, the drive device is connected to the transmission device and can increase the distance between the roller unit and the support seat via the transmission device, so as to drive the front scraper bar to descend.

[0006] In this solution, the lower end of the roller unit is in contact with the ground, and the upper end of the roller unit is connected to the support seat through a guide slide mechanism, which is also a part of the floor brush vibration reduction mechanism. The roller unit is used to support the weight of the floor brush, and a transmission device is arranged between the roller unit and the support seat. When the driving device increases the distance between the roller unit and the support seat through the transmission device, since the lower end of the roller unit is supported on the ground, the distance between the support seat and the ground is increased accordingly (i.e., one end of the support seat is raised). The floor brush is connected to the body through a universal joint, and the principle of leverage is used to make the front scraper bar arranged at the other end of the support seat drop. When the floor scrubber passes through the gap, it can scrape off the water stains in the gap without leaving any water marks, thereby improving the user experience.

[0007] Preferably, the transmission device includes a connecting rod and a driving wheel, the driving wheel is mounted on one end of the support seat close to the roller unit, the first end of the connecting rod is hinged to the roller unit, the second end of the connecting rod is hinged to the driving wheel, the hinge point between the second end and the driving wheel is eccentrically arranged on the end face of the driving wheel, the driving device is connected to the driving wheel, and the driving device is used to drive the driving wheel to rotate.

[0008] In this solution, the hinge point between the connecting rod and the driving wheel is eccentrically arranged, and when the driving wheel rotates, the connecting rod can convert the rotation of the driving wheel into a lifting movement in the height direction. Since the first end of the connecting rod is connected to the roller unit, when the driving wheel drives the second end of the connecting rod to descend, the force of the connecting rod will be transmitted to the support seat through the driving wheel, so that the end of the support seat away from the front scraper bar will rise, and the front scraper bar installed at the other end of the support seat will descend.

[0009] Preferably, the transmission device includes a connecting rod, a sliding member and a driving wheel, the driving wheel is mounted on one end of the support seat close to the roller unit, one end of the sliding member is connected to the roller unit, and the other end of the sliding member is slidably disposed on the support seat through a guide structure, the first end of the connecting rod is hinged to the sliding member, the second end of the connecting rod is hinged to the driving wheel, the hinge point between the second end and the driving wheel is eccentrically arranged on the end face of the driving wheel, and the driving device is connected to the driving wheel, and the driving device is used to drive the driving wheel to rotate.

[0010] In this solution, the hinge point between the connecting rod and the driving wheel is eccentrically arranged, and when the driving wheel rotates, the connecting rod can convert the rotation of the driving wheel into a lifting movement in the height direction. Since the first end of the connecting rod is connected to the roller unit through a sliding member, and the sliding member is also slidably arranged on the support seat through a guide structure, when the support seat is raised relative to the roller unit, it slides along the guide structure to prevent the connecting rod from being stuck due to skewness, thereby improving reliability. When the driving wheel drives the second end of the connecting rod to descend, the force of the connecting rod will be transmitted to the support seat through the driving wheel, causing the support seat to rise away from one end of the front scraper strip, and the front scraper strip installed at the other end of the support seat will descend.

[0011] Preferably, the slide guide structure includes a slide hole and a slide rod passing through the slide hole, the slide rod is connected to the support seat, and the slide hole is arranged on the sliding member.

[0012] In this solution, the above-mentioned structural arrangement is adopted to enable the support seat to slide along the slide rod relative to the roller unit, thereby improving the accuracy of the sliding direction, reducing the driving force of the connecting rod, and improving reliability.

[0013] Preferably, the driving wheel is provided with hard contact parts and soft contact parts at intervals along its circumferential direction, and the driving device stops driving when driving the driving wheel to rotate to a position where the hard contact part contacts the ground;

[0014] When the hard contact portion is in contact with the ground, the rotation of the driving wheel is driven by the friction force with the ground;

[0015] When the soft contact portion is in contact with the ground, the driving wheel cannot be driven by friction with the ground.

[0016] In this solution, the motor only rotates the driving wheel to the position where the hard contact part contacts the ground when there is a gap in front of the floor scrubber, and then the driving force of the driving wheel relies on the friction between the hard contact part and the ground. Since the floor scrubber moves back and forth, when the contact part contacts the ground, the driving wheel is driven by the friction between the hard contact part and the ground, so that the driving wheel rolls on the ground, and the support seat is lifted under the action of the connecting rod, so that the front scraper bar drops at the gap, increasing the interference, and scraping away the water stains. When the driving wheel rotates to the position of the soft contact part, the soft contact part will deform, so that the friction between the soft contact part and the ground is small, and the friction is not enough to drive the driving wheel to rotate, and when the driving wheel rotates to the position of the soft contact part, the front scraper bar has scraped the gap, and the height of the support seat and the height of the front scraper bar are restored to the initial position. Compared with using the motor to drive the driving wheel all the time, using the friction of the ground to drive the driving wheel is convenient to control the moving position, simplify the control program of the motor, and also reduce the working time of the motor, extending the service life of the motor.

[0017] Preferably, the driving wheel comprises a hub and a rim sleeved on the circumference of the hub, the hard contact portion and the soft contact portion are arranged on the rim at intervals, the hard contact portion is made of hard rubber material, and the soft contact portion is made of soft rubber material.

[0018] In this solution, the above-mentioned structural setting is adopted so that when the driving wheel rotates from the hard contact part to the soft contact part, a smooth transition is achieved, bumps are prevented, and the user experience is improved. Preferably, the wheel rim includes an inner ring, an outer ring and a connecting part, the inner ring is embedded in the wheel hub, the two ends of the connecting part are respectively connected to the inner ring and the outer ring, and the hard contact part is arranged on the side of the connecting part close to the outer ring. When the hard contact part contacts the ground, the connecting part is squeezed to produce elastic deformation, so as to achieve a smooth transition between the hard contact part and the soft contact part, prevent bumps, and improve the user experience.

[0019] Preferably, the arc length of the hard contact portion is equal to the distance the front scraper strip descends.

[0020] In this solution, the above-mentioned structural setting is adopted, which makes it easy to adjust the distance that the front scraper strip descends by adjusting the arc length of the hard contact part, and the operation is simple and convenient.

[0021] Preferably, the driving device comprises a motor, the shaft of the motor is connected to the shaft of the driving wheel, and the motor is used to drive the driving wheel to rotate;

[0022] The floor scrubber also includes a camera and a control panel. The camera is installed at the front end of the floor scrubber and is used to photograph the ground. The control panel is electrically connected to the camera and the motor. The control panel identifies the position of the gap through the image taken by the camera and controls the rotation of the motor according to the position of the gap.

[0023] In this solution, the control panel and the camera are used to monitor the gaps on the ground. When the control panel finds a gap on the ground, the control panel controls the motor to rotate, and the motor drives the driving wheel to rotate. When the driving wheel rotates to the point where the hard contact part touches the ground, the control panel turns off the motor, and the driving wheel is driven by the friction between the hard contact part and the ground. When the control panel determines the next gap based on the image of the camera, the control panel controls the motor to rotate, so that the driving wheel rotates past the position of the soft contact part and rotates to the next hard contact part, so as to lower the front scraper.

[0024] Preferably, a sensor is provided at the junction of the hard contact part and the soft contact part, and the sensor is electrically connected to the control board;

[0025] When the sensor is squeezed, a stop signal is sent to the control board. After receiving the stop signal, the control board controls the motor to stop rotating.

[0026] In this solution, the above-mentioned structural arrangement is adopted so that the control board can stop the rotation of the motor according to the signal of the sensor so that the front scraper strip is lowered at the gap position to improve the accuracy.

[0027] Preferably, the roller unit comprises a mounting seat and a roller, the roller is mounted on the support seat through the mounting seat and the guide mechanism, and one end of the transmission device is connected to the mounting seat;

[0028] The slide guide mechanism comprises a slide rod and a slide block sleeved on the slide rod, the slide rod is connected to the support seat, and the slide block is connected to the mounting seat.

[0029] In this solution, the roller is installed on the support seat through the mounting seat. The roller is used to support the weight of the floor brush. The roller rolls on the ground to reduce friction and facilitate the back and forth movement of the floor scrubber. The mounting seat is installed on the support seat through a guide mechanism, which is also part of the vibration reduction mechanism of the floor brush. If the ground is uneven, the vibration of the floor brush is reduced to facilitate the smooth passage of the floor brush.

[0030] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0031] The positive and progressive effects of the present invention are: the lower end of the roller unit is in contact with the ground, the upper end of the roller unit is connected to the support seat through a guide slide mechanism, the guide slide mechanism is also a part of the floor brush vibration reduction mechanism, the roller unit is used to support the weight of the floor brush, the transmission device is arranged between the roller unit and the support seat, when the driving device increases the distance between the roller unit and the support seat through the transmission device, since the lower end of the roller unit is supported on the ground, the distance between the support seat and the ground is correspondingly increased (that is, one end of the support seat is raised), and since the floor brush is connected to the body through a universal joint, the lever principle is used to make the front scraper bar arranged at the other end of the support seat drop, and when the floor scrubber passes through the gap, it can scrape off the water stains in the gap without leaving any water marks, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of a floor brush according to a preferred embodiment of the present invention (I).

[0033] Figure 2 The figure is a schematic diagram of the partial structure of a floor brush according to a preferred embodiment of the present invention.

[0034] Figure 3 It is a schematic diagram of the partial structure of a floor brush according to a preferred embodiment of the present invention (the lower shell is hidden).

[0035] Figure 4 This is a schematic structural diagram of a floor brush according to a preferred embodiment of the present invention (II).

[0036] Figure 5 This is a schematic structural diagram of a transmission device according to a preferred embodiment of the present invention (I).

[0037] Figure 6 This is a schematic structural diagram of a transmission device according to a preferred embodiment of the present invention (II).

[0038] Figure 7 The figure is a schematic structural diagram of a driving wheel according to a preferred embodiment of the present invention.

[0039] Figure 8 It is a schematic structural diagram of a wheel hub according to a preferred embodiment of the present invention.

[0040] Fig. 9 The figure is a schematic structural diagram of a wheel rim according to a preferred embodiment of the present invention.

[0041] Description of reference numerals:

[0042] Floor brush 100

[0043] Front-end 101

[0044] Backend 102

[0045] Support seat 1

[0046] Roller unit 2

[0047] Mounting Block 21

[0048] Roller 22

[0049] Front scraper 3

[0050] Transmission 4

[0051] Connecting rod 41

[0052] First End 411

[0053] Second end 412

[0054] Slider 42

[0055] Drive wheel 43

[0056] Wheel 431

[0057] Rim 432

[0058] Inner ring 4321

[0059] Outer ring 4322

[0060] Connection 4323

[0061] Hinge point 433

[0062] Hard contact part 434

[0063] Soft contact portion 435

[0064] Guide structure 44

[0065] Slide hole 441

[0066] Slide bar 442

[0067] Drive device 5

[0068] Camera 6

[0069] Sensor 7 DETAILED DESCRIPTION

[0070] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0071] like Figure 1-Figure 9As shown, the present embodiment discloses a floor scrubber. The floor scrubber comprises a floor brush 100 and a body (not shown in the figure), the floor brush 100 comprises a support seat 1, a roller unit 2 and a front scraper 3, the support seat 1 of the floor brush 100 is connected to the body through a universal joint (not shown in the figure), the front scraper 3 is mounted on the front end 101 of the support seat 1, the roller unit 2 is mounted on the rear end 102 of the support seat 1, the roller unit 2 can be raised and lowered relative to the support seat 1 along the height direction through a guide mechanism (not shown in the figure), the floor scrubber also comprises a transmission device 4 and a driving device 5 mounted on the support seat 1, one end of the transmission device 4 is connected to the roller unit 2, the other end of the transmission device 4 is connected to the support seat 1, the driving device 5 is connected to the transmission device 4 and can increase the distance between the roller unit 2 and the support seat 1 through the transmission device 4, so as to drive the front scraper 3 to descend.

[0072] In this embodiment, if Figure 1-Figure 4 As shown, the lower end of the roller unit 2 is in contact with the ground, and the upper end of the roller unit 2 is connected to the support seat 1 through a guide slide mechanism, which is also a part of the vibration reduction mechanism of the floor brush 100. The roller unit 2 is used to support the weight of the floor brush 100, and the transmission device 4 is arranged between the roller unit 2 and the support seat 1. When the driving device 5 increases the distance between the roller unit 2 and the support seat 1 through the transmission device 4, since the lower end of the roller unit 2 is supported on the ground, the distance between the support seat 1 and the ground is increased accordingly (that is, one end of the support seat 1 is raised). In addition, since the floor brush 100 is connected to the body through a universal joint, the front scraper 3 arranged at the other end of the support seat 1 will drop by utilizing the lever principle. When the floor scrubber passes through the gap, it can scrape off the water stains in the gap without leaving any water marks, thereby improving the user experience.

[0073] like Figure 3 As shown, the roller unit 2 includes a mounting seat 21 and a roller 22. The roller 22 is mounted on the support seat 1 through the mounting seat 21 and a guide mechanism (not shown in the figure). One end of the transmission device 4 is connected to the mounting seat 21. The roller 22 is used to support the weight of the floor brush 100. The roller 22 rolls on the ground to reduce friction and facilitate the back and forth movement of the floor scrubber. The guide mechanism includes a sliding rod and a slider sleeved on the sliding rod. The sliding rod is connected to the support seat 1, and the slider is connected to the mounting seat 21. The mounting seat 21 is mounted on the support seat 1 through the guide mechanism. A spring is installed on the sliding rod to form a vibration reduction mechanism for the floor brush 100. If the ground is uneven, the vibration of the floor brush 100 is reduced, so that the floor brush 100 can pass smoothly.

[0074] The support base 1 includes a support frame and an upper shell and a lower shell installed on the support frame. Figure 3 The lower shell is hidden in the figure to show the internal structure diagram of the floor scrubber.

[0075] In this embodiment, if Figure 3-Figure 8As shown, the transmission device 4 includes a connecting rod 41, a sliding member 42 and a driving wheel 43. The driving wheel 43 is installed at one end of the support seat 1 close to the roller unit 2. One end of the sliding member 42 is connected to the roller unit 2. The other end of the sliding member 42 is slidably arranged on the support seat 1 through a guide structure 44. The first end 411 of the connecting rod 41 is hinged to the sliding member 42. The second end 412 of the connecting rod 41 is hinged to the driving wheel 43. The hinge point 433 between the second end 412 and the driving wheel 43 is eccentrically arranged on the end face of the driving wheel 43. The driving device 5 is connected to the driving wheel 43. The driving device 5 is used to drive the driving wheel 43 to rotate. The hinge point 433 between the connecting rod 41 and the driving wheel 43 is eccentrically arranged. When the driving wheel 43 rotates, the connecting rod 41 can convert the rotation of the driving wheel 43 into a lifting motion in the height direction. Since the first end 411 of the connecting rod 41 is connected to the roller unit 2 through the sliding member 42, and the sliding member 42 is also slidably arranged on the support seat 1 through the guide structure 44, when the support seat 1 is raised relative to the roller unit 2, it slides along the guide structure 44 to prevent the connecting rod 41 from being stuck due to skewing, thereby improving reliability. When the driving wheel 43 drives the second end 412 of the connecting rod 41 to descend, the force of the connecting rod 41 will be transmitted to the support seat 1 through the driving wheel 43, so that the end of the support seat 1 away from the front scraper 3 rises, and the front scraper 3 installed at the other end of the support seat 1 will fall. The connecting ear of the sliding member 42 is connected to the mounting seat 21 of the roller unit 2.

[0076] In other alternative embodiments, the transmission device includes a connecting rod and a driving wheel, the driving wheel is installed at one end of the support seat near the roller unit, the first end of the connecting rod is hinged to the roller unit, the second end of the connecting rod is hinged to the driving wheel, the hinge point between the second end and the driving wheel is eccentrically arranged on the end face of the driving wheel, the driving device is connected to the driving wheel, and the driving device is used to drive the driving wheel to rotate. The first end of the connecting rod is directly hinged to the roller unit, eliminating the sliding part. Since the first end of the connecting rod is connected to the roller unit, when the driving wheel drives the second end of the connecting rod to descend, the force of the connecting rod will be transmitted to the support seat through the driving wheel, causing the end of the support seat away from the front scraper to rise, and the front scraper installed at the other end of the support seat will descend.

[0077] like Figure 3 and Figure 5 As shown, the guide sliding structure 44 includes a sliding hole 441 and a sliding rod 442 passing through the sliding hole 441, the sliding rod 442 is connected to the support seat 1, and the sliding hole 441 is arranged on the sliding member 42, so that the support seat 1 slides along the sliding rod 442 relative to the roller unit 2, thereby improving the accuracy of the sliding direction, reducing the driving force of the connecting rod 41, and improving reliability.

[0078] like Figure 7As shown, the driving wheel 43 is provided with hard contact parts 434 and soft contact parts 435 at intervals along its circumferential direction, and the driving device 5 stops driving when the driving wheel 43 is driven to rotate to the position where the hard contact part 434 contacts the ground. When the hard contact part 434 contacts the ground, the rotation of the driving wheel 43 is driven by the friction with the ground. When the soft contact part 435 contacts the ground, the driving wheel 43 cannot be driven by the friction with the ground. The hard contact parts 434 and soft contact parts 435 arranged at intervals on the driving wheel 43 allow the front scraper 3 to be lowered when encountering a ground seam, and to return to the initial position after passing through the ground seam. The motor only rotates the driving wheel 43 to the position where the hard contact part 434 contacts the ground when there is a gap in front of the scrubber, and then the driving force of the driving wheel 43 relies on the friction between the hard contact part 434 and the ground. Since the floor scrubber moves back and forth, when the contact part contacts the ground, the driving wheel 43 is driven by the friction between the hard contact part 434 and the ground, so that the driving wheel 43 rolls on the ground, and the support seat 1 is lifted under the action of the connecting rod 41, so that the front scraper 3 drops at the gap, increasing the interference, and scraping away the water stains. When the driving wheel 43 rotates to the position of the soft contact part 435, the soft contact part 435 will deform, so that the friction between the soft contact part 435 and the ground is small, and the friction is not enough to drive the driving wheel 43 to rotate. When the driving wheel 43 rotates to the position of the soft contact part 435, the front scraper 3 has scraped the gap, and the height of the supporting seat 1 and the height of the front scraper 3 are restored to the initial position. Compared with using a motor to drive the driving wheel 43 all the time, using the friction of the ground to drive the driving wheel 43 is convenient to control the moving position, simplifies the control program of the motor, and also reduces the working time of the motor, extending the service life of the motor.

[0079] like Figure 8 and Fig. 9 As shown, the floor scrubber also includes a control board (not shown in the figure). A sensor 7 is provided at the junction of the hard contact portion 434 and the soft contact portion 435, and the sensor 7 is electrically connected to the control board. When the sensor 7 is squeezed, a stop signal is sent to the control board. After receiving the stop signal, the control board controls the motor to stop rotating, so that the control board can stop the motor rotation according to the signal of the sensor 7, so that the front scraper 3 is lowered at the gap position to improve accuracy.

[0080] like Figure 8 and Fig. 9 As shown, the driving wheel 43 includes a hub 431 and a rim 432 sleeved on the circumference of the hub 431. The rim 432 is provided with a hard contact portion 434 and a soft contact portion 435 at intervals. The hard contact portion 434 is made of hard rubber material, and the soft contact portion 435 is made of soft rubber material, so that when the driving wheel 43 rotates from the hard contact portion 434 to the soft contact portion 435, a smooth transition is achieved to prevent bumps and improve user experience. Fig. 9As shown, the wheel rim 432 includes an inner ring 4321, an outer ring 4322 and a connecting portion 4323. The inner ring 4321 is embedded in the wheel hub 431, the connecting portion 4323 is penetrated in the wheel hub 431 and the two ends of the connecting portion 4323 are respectively connected to the inner ring 4321 and the outer ring 4322, and the hard contact portion 434 is arranged on the side of the connecting portion 4323 close to the outer ring 4322. The connecting portion 4323 is fan-shaped so that the hard contact portion 434 is in an arc-shaped structure. The material of the wheel rim 432 is rubber. When the hard contact portion 434 contacts the ground, the connecting portion 4323 is squeezed to produce elastic deformation, so as to achieve a smooth transition between the hard contact portion 434 and the soft contact portion 435, prevent bumps, and improve user experience. When the connecting portion 4323 is squeezed to produce elastic deformation, it also triggers the sensor 7. When the sensor 7 is squeezed, it sends a stop signal to the control board. After receiving the stop signal, the control board controls the motor to stop rotating.

[0081] The arc length of the hard contact portion 434 is equal to the distance the front scraper strip 3 descends, so the distance the front scraper strip 3 descends can be adjusted by adjusting the arc length of the hard contact portion 434 , and the operation is simple and convenient.

[0082] like Figure 4 As shown, the driving device 5 includes a motor, the shaft of which is connected to the shaft of the driving wheel 43, and the motor is used to drive the driving wheel 43 to rotate. The floor scrubber also includes a camera 6, which is installed at the front end 101 of the floor scrubber. The camera 6 is used to shoot the ground. The control board is electrically connected to the camera 6 and the motor. The control board identifies the position of the gap through the image shot by the camera 6, and controls the motor to rotate according to the position of the gap. The control board and the camera 6 are used to monitor the gap on the ground. When the control board finds that there is a gap on the ground, the control board controls the motor to rotate, and the motor drives the driving wheel 43 to rotate. When the driving wheel 43 rotates to the point where the hard contact part 434 contacts the ground, the control board turns off the motor, and the driving wheel 43 is driven under the friction between the hard contact part 434 and the ground. When the control board determines the next gap based on the image of the camera 6, the control board controls the motor to rotate, so that the driving wheel 43 rotates past the position of the soft contact part 435 and rotates to the next hard contact part 434, so as to lower the front scraper 3.

[0083] The principles that the control board recognizes the position of the gap through the image captured by the camera and controls the motor according to the signal from the sensor are both existing technologies and will not be described in detail here.

[0084] In the description of this article, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0085] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A floor scrubber, comprising a floor brush and a body, wherein the floor brush is connected to the body through a universal joint, the floor brush comprises a support seat, a roller unit and a front scraper bar, the front scraper bar and the roller unit are respectively mounted at both ends of the support seat, and the roller unit can be raised and lowered in a height direction relative to the support seat through a guide slide mechanism, characterized in that: The floor scrubber also includes a transmission device and a driving device installed on the support seat, one end of the transmission device is connected to the roller unit, and the other end of the transmission device is connected to the support seat, and the driving device is connected to the transmission device and can increase the distance between the roller unit and the support seat through the transmission device to drive the front scraper bar to descend.

2. The floor scrubber according to claim 1, characterized in that: The transmission device includes a connecting rod and a driving wheel. The driving wheel is installed on one end of the support seat close to the roller unit. The first end of the connecting rod is hinged to the roller unit, and the second end of the connecting rod is hinged to the driving wheel. The hinge point between the second end and the driving wheel is eccentrically arranged on the end face of the driving wheel. The driving device is connected to the driving wheel, and the driving device is used to drive the driving wheel to rotate.

3. The floor scrubber according to claim 1, characterized in that: The transmission device includes a connecting rod, a sliding member and a driving wheel. The driving wheel is installed on one end of the support seat close to the roller unit. One end of the sliding member is connected to the roller unit. The other end of the sliding member is slidably arranged on the support seat through a guide structure. The first end of the connecting rod is hinged to the sliding member, and the second end of the connecting rod is hinged to the driving wheel. The hinge point between the second end and the driving wheel is eccentrically arranged on the end face of the driving wheel. The driving device is connected to the driving wheel, and the driving device is used to drive the driving wheel to rotate.

4. The floor scrubber according to claim 3, characterized in that: The slide guide structure comprises a slide hole and a slide rod penetrating the slide hole, the slide rod is connected to the support seat, and the slide hole is arranged on the slide member.

5. The floor scrubber according to claim 3, characterized in that: The driving wheel is provided with hard contact parts and soft contact parts at intervals along its circumferential direction, and the driving device stops driving when driving the driving wheel to rotate to a position where the hard contact part contacts the ground; When the hard contact portion is in contact with the ground, the rotation of the driving wheel is driven by the friction force with the ground; When the soft contact portion is in contact with the ground, the driving wheel cannot be driven by friction with the ground.

6. The floor scrubber according to claim 5, characterized in that: The driving wheel comprises a hub and a rim sleeved on the circumference of the hub, the hard contact part and the soft contact part are arranged on the rim at intervals, the hard contact part is made of hard rubber material, and the soft contact part is made of soft rubber material.

7. The floor scrubber according to claim 6, characterized in that: The arc length of the hard contact portion is equal to the distance that the front scraper strip descends.

8. The floor scrubber according to claim 6, characterized in that: The driving device comprises a motor, the shaft of the motor is connected to the shaft of the driving wheel, and the motor is used to drive the driving wheel to rotate; The floor scrubber also includes a camera and a control panel. The camera is installed at the front end of the floor scrubber and is used to photograph the ground. The control panel is electrically connected to the camera and the motor. The control panel identifies the position of the gap through the image taken by the camera and controls the rotation of the motor according to the position of the gap.

9. The floor scrubber according to claim 8, characterized in that: A sensor is provided at the junction of the hard contact part and the soft contact part, and the sensor is electrically connected to the control board; When the sensor is squeezed, a stop signal is sent to the control board. After receiving the stop signal, the control board controls the motor to stop rotating.

10. The floor scrubber according to any one of claims 1 to 9, characterized in that: The roller unit comprises a mounting seat and a roller, the roller is mounted on the support seat through the mounting seat and the guide mechanism, and one end of the transmission device is connected to the mounting seat; The slide guide mechanism comprises a slide rod and a slide block sleeved on the slide rod, the slide rod is connected to the support seat, and the slide block is connected to the mounting seat.

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