An adaptive scraping ground cleaning device and a mopping and sweeping robot

Abstract

The present invention discloses a floor cleaning device with adaptive squeezing and scraping and a mopping and sweeping robot. The floor cleaning device includes a chassis, a rolling brush, and an adaptive squeezing and scraping mechanism. The adaptive squeezing and scraping mechanism includes a squeezing belt, a driving roller, a swing rod, and a tension spring. There are two driving rollers, and the axes of the two driving rollers are parallel to the axis of the rolling brush. The squeezing belt is wound around the two driving rollers. There are two groups of swing rods, and the two groups of swing rods are respectively connected to the two ends of the driving roller. Each group of swing rods includes two swing rods, and the two swing rods are cross-rotationally connected to the chassis. One end of one swing rod is fixedly connected to one driving roller, and one end of the other swing rod is fixedly connected to the other driving roller. The two ends of the tension spring are respectively fixedly connected to the other ends of the two swing rods in the same group. The present invention can adaptively adjust the distance between the squeezing belt and the rolling brush to ensure that the squeezing belt can always be tightly pressed against the rolling brush, which is beneficial to scraping the dirt on the rolling brush.

Description

Technical Field

[0001] The present invention relates to a cleaning device, and particularly to a floor cleaning device with self-adaptive squeezing and scraping and a mopping and sweeping robot. Background Art

[0002] Currently, intelligent wireless household floor scrubbers integrating functions of suction, mopping, washing and disinfection have been greatly popularized and applied with the upgrading and iteration of technology and the increase of consumer demand. Its basic cleaning principle is to evenly spray clean water on the surface of the roller brush first, then clean the floor by rotating the roller brush. At the same time, the attached sewage and dirt are scraped off by a scraper continuously squeezing the roller brush, and finally the dirt is centrally recovered into the sewage tank through the air duct and the suction port.

[0003] However, most of the current floor scrubbers on the market use fixed rigid scraping strips or scrapers to scrape the sewage on the roller brush. This not only easily wears the scraper itself, but also aggravates the wear degree of the bristles of the roller brush, reduces the service life of the roller brush, and at the same time causes the self-cleaning ability of the cleaning components of the floor scrubber to decline.

[0004] To solve such problems, the Chinese utility model patent with the authorization announcement number of CN 217137938 U discloses a cleaning device with a roller brush that is not easily worn. The extrusion roller of this cleaning device is rotatably arranged in the roller brush cavity. During the rotation of the roller brush, the extrusion roller can squeeze the roller brush, thereby squeezing out the sewage in the roller brush. Moreover, since the frictional force between the roller brush and the extrusion roller can be converted into the torque of the extrusion roller to drive the extrusion roller to rotate, the wear rate between the roller brush and the extrusion roller can be significantly reduced, and the service life of the roller brush and the extrusion roller can be extended, so that the cleaning device can continuously maintain a good cleaning effect.

[0005] The above cleaning device has the following deficiencies:

[0006] Using a cylindrical extrusion roller, although the rotation of the extrusion roller around its own axis can reduce the wear and resistance to the bristles of the roller brush, the actual extrusion surface of the extrusion roller on the bristles of the roller brush is a small arc surface on the outer circle of the extrusion roller. The water on the squeezed part of the bristles of the roller brush may either leave the surface of the bristles of the roller brush or transfer to the adjacent bristles outside the squeezed surface of the bristles of the roller brush, and the effect of squeezing dirt is affected.

[0007] And the above extrusion roller is fixedly installed. If the distance between the extrusion roller and the axis of the roller brush is set too small, the resistance of the extrusion roller to the rotation of the roller brush will be too large, and the wear of the bristles of the roller brush will be aggravated. If the distance between the extrusion roller and the axis of the roller brush is set too large, when the fluff on the roller brush absorbs water and shrinks and wears after being used for a period of time, the distance between the extrusion roller and the bristles will become larger, and the extrusion force of the extrusion roller on the roller brush will become smaller, and the dirt on the roller brush cannot be effectively scraped off, resulting in secondary pollution to the ground and water stain residues. Summary of the Invention

[0008] The purpose of the present invention is to overcome the above-mentioned problems and provide an adaptive squeezing and scraping floor cleaning device, which can adaptively adjust the distance between the squeezing belt and the roller brush to ensure that the squeezing belt can always be close to the roller brush. At the same time, since the squeezing belt is in surface contact with the roller brush, the dynamically adaptively adjusted squeezing belt can significantly improve the effect of removing dirt from the surface of the roller brush.

[0009] Another object of the present invention is to provide a sweeping and mopping robot.

[0010] The purpose of the present invention is achieved through the following technical solutions:

[0011] An adaptive squeezing and scraping floor cleaning device comprises a chassis, a roller brush and an adaptive squeezing and scraping mechanism; the roller brush is rotatably connected to the chassis;

[0012] The adaptive scraping mechanism is arranged between the chassis and the roller brush, and the adaptive scraping mechanism includes a squeezing belt, a transmission roller, a swing rod, a tension spring and a tensioning assembly; there are two transmission rollers, and the two transmission rollers are arranged in parallel up and down; the axes of the two transmission rollers are parallel to the axis of the roller brush; the squeezing belt is arranged around the two transmission rollers; the inner side surface of the squeezing belt is provided with meshing teeth; the surface of the transmission roller is provided with meshing grooves for matching with the meshing teeth; there are two groups of swing rods, and the two groups of swing rods are respectively connected to the two ends of the transmission roller; each group of swing rods includes two swing rods, and the two swing rods are cross-rotatably connected to the chassis; one end of one of the swing rods is fixedly connected to one of the transmission rollers, and one end of the other swing rod is fixedly connected to the other transmission roller; the two ends of the tension spring are respectively fixedly connected to the other ends of the two swing rods in the same group;

[0013] The tensioning assembly includes a tensioning roller and two elastic tensioners; the tensioning roller is squeezed on the outer surface of the extrusion belt, and both ends of the tensioning roller extend to the first limit mounting groove of the chassis; the first limit mounting groove is used for placing the tensioning roller and allowing the tensioning roller to move for tensioning; one end of the two elastic tensioners are respectively rotatably connected to the two ends of the tensioning roller, and the other ends of the two elastic tensioners are rotatably connected to the rotation centers of the two sets of rocker arms.

[0014] The working principle of the above-mentioned adaptive squeezing and scraping floor cleaning device is as follows:

[0015] During operation, the extrusion belt is driven by the transmission roller to perform extrusion and scraping work, which can increase the contact area between the roller brush and the extrusion belt, thereby scraping off the dirt and sewage attached to the surface of the roller brush, and effectively squeezing the roller brush while eliminating the slipping phenomenon as much as possible (slipping easily wears the roller brush). Among them, by setting a tensioning roller and an elastic tensioner, the extrusion belt can be adaptively tensioned, the extrusion belt can be adjusted, and a good tensioning force of the extrusion belt can be ensured.

[0016] Furthermore, since the two driving rollers are supported by two swing rods that are cross-rotationally connected, and the other ends of the two swing rods are tightened by tension springs. When the diameter of the rotary brush becomes smaller, that is, the acting range on the two driving rollers is reduced. At this time, the tension spring will release part of its potential energy and recover a certain amount of deformation, thereby driving the two swing rods to swing towards each other to ensure that the two driving rollers can continuously press the extrusion belt against the rotary brush.

[0017] A preferred embodiment of the present invention, wherein, two second limit mounting grooves are provided on the chassis, the two second limit mounting grooves are both arc-shaped and have the same center as the arc and the rotation center of the swing rod;

[0018] Both ends of the driving roller respectively extend into the two second limit mounting grooves. A preferred embodiment of the present invention, wherein, raised patterns (horizontal stripes, chevron patterns, etc.) are provided on the outer surface of the extrusion belt to increase the frictional force of the rotary brush on the extrusion belt.

[0019] A preferred embodiment of the present invention, wherein, the elastic tensioner is composed of a shock absorber.

[0020] A preferred embodiment of the present invention, wherein, the driving roller includes a scraping part and two mounting parts, and the two mounting parts are integrally fixed at both ends of the scraping part; the diameter of the mounting part is smaller than that of the scraping part; friction damping structures are provided on the mounting parts, and the friction damping structure includes a gasket, a compression spring and a limit nut; the swing rod is rotationally connected to the mounting part of the driving roller; there are two gaskets, and the two gaskets are fixedly arranged on the mounting part and are respectively located on both sides of the swing rod, and one of the gaskets is clamped between the side surface of the swing rod and the side surface of the scraping part of the driving roller; the limit nut is fixedly connected to the mounting part of the driving roller through a threaded structure; the compression spring is sleeved on the mounting part of the driving roller, and both ends of the compression spring abut against the limit nut and the other gasket. Through the above structure, when the rotary brush drives the extrusion belt to rotate, the extrusion belt drives the driving roller to rotate, and the mounting parts at both ends of the driving roller will drive the wear-resistant gasket to rotate together, and a friction damping will be formed at the contact surface between the wear-resistant gasket and the swing rod, which will reduce the rotation speed of the extrusion belt by the driving roller. When the rotation speed of the extrusion belt is lower than that of the rotary brush, the scraping effect of the extrusion belt on the dirt on the surface of the rotary brush is better. Further, by adjusting the position of the limit nut and the tightness of the compression spring, the damping force of the wear-resistant gasket can be changed, and the practicability is better.

[0021] Furthermore, the friction damping structure further includes an elastic sleeve, and the elastic sleeve is sleeved between the swing rod and the mounting part. In this way, due to the elastic force of the elastic sleeve, the elastic sleeve will always interfere with the inner hole wall of the swing rod and generate a damping force. At the same time, the elastic sleeve can reduce the requirements for the shaft-hole fit of the damping structure and the processing cost, and improve the service life.

[0022] A mopping and sweeping robot, including a body and the floor cleaning device.

[0023] The present invention has the following beneficial effects compared with the prior art:

[0024] 1. By means of the extrusion belt, the contact area between the extrusion and scraping assembly and the roller brush is increased, and the effect of squeezing and scraping water is improved.

[0025] 2. The extrusion belt is tensioned by the elastic tensioning device, and the extrusion belt is adaptively adjusted to ensure good tension of the extrusion belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a partial three-dimensional structural explosion schematic diagram of the floor cleaning device with adaptive extrusion and scraping of the present invention.

[0027] Figures 2-3 It is a partial three-dimensional structural schematic diagram of two different perspectives of the adaptive extrusion and scraping mechanism of the present invention.

[0028] Figure 4 It is a side view of the roller brush and the adaptive extrusion and scraping mechanism of the present invention.

[0029] Figure 5 It is a three-dimensional structural schematic diagram of the extrusion belt 6 of the present invention.

[0030] Figure 6 It is a side view of the extrusion belt and the transmission roller of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described below in conjunction with the embodiments and the drawings, but the embodiments of the present invention are not limited thereto.

[0032] Refer to Figures 1-3 , the mopping and sweeping robot of this embodiment includes a fuselage and a floor cleaning device; the floor cleaning device includes a chassis 1, a roller brush 2, and an adaptive extrusion and scraping mechanism; the roller brush 2 is rotatably connected to the chassis 1.

[0033] Refer to Figures 2-6 , the adaptive extrusion and scraping mechanism is arranged between the chassis 1 and the roller brush 2, and the adaptive extrusion and scraping mechanism includes a transmission roller 3, a swing rod 4, a tension spring 5, an extrusion belt 6, and a tensioning assembly; there are two transmission rollers 3, and the two transmission rollers 3 are arranged side by side up and down; the axes of the two transmission rollers 3 are parallel to the axis of the roller brush 2; the extrusion belt 6 is wound around the two transmission rollers 3; meshing teeth are provided on the inner side surface of the extrusion belt 6; the transmission roller 3 constitutes a synchronous pulley for driving the extrusion belt 6 to move, and meshing grooves for cooperating with the meshing teeth are provided on the surface of the transmission roller 3.

[0034] Refer to Figures 2-6, there are two sets of swing rods 4, and the two sets of swing rods 4 are respectively connected to both ends of the transmission roller 3; each set of swing rods 4 includes two swing rods 4, and the two swing rods 4 are cross-rotationally connected to the chassis 1; one end of one swing rod 4 is fixedly connected to one transmission roller 3, and one end of the other swing rod 4 is fixedly connected to the other transmission roller 3; both ends of the tension spring 5 are respectively fixedly connected to the other ends of the two swing rods 4 in the same set.

[0035] See Figures 2-6 , the tensioning assembly includes a tensioning roller 7 and two elastic tensioners 8 (specifically, the elastic tensioner 8 is composed of a shock absorber); the tensioning roller 7 is pressed against the outer surface of the extrusion belt 6, and both ends of the tensioning roller 7 extend to the first limit mounting groove 1-1 of the chassis 1; the first limit mounting groove is used to place the tensioning roller 7 and at the same time allow the tensioning roller 7 to perform tensioning movement; one ends of the two elastic tensioners 8 are respectively rotationally connected to both ends of the tensioning roller 7, and the other ends of the two elastic tensioners 8 are rotationally connected to the rotation centers of the two sets of swing rods 4.

[0036] See Figure 3 , there are two second limit mounting grooves 1-2 on the chassis 1, both of the two second limit mounting grooves 1-2 are arc-shaped and the center of the arc is the same as the rotation center of the swing rod 4; both ends of the transmission roller 3 respectively extend into the two second limit mounting grooves 1-2.

[0037] Further, the outer surface of the extrusion belt 6 is provided with raised patterns (horizontal lines, chevron patterns, etc.) to increase the friction between the roller brush 2 and the extrusion belt 6.

[0038] See Figures 2-6The transmission roller 3 includes a scraping part 3-1 and two mounting parts 3-2, and the two mounting parts 3-2 are integrally fixed at the two ends of the scraping part 3-1; the diameter of the mounting part 3-2 is smaller than the diameter of the scraping part 3-1; the mounting part 3-2 is provided with a friction damping structure, which includes a gasket 9, a compression spring 10 and a limit nut 11; the rocker 4 is rotatably connected to the mounting part 3-2 of the transmission roller 3; there are two gaskets 9, which are fixedly arranged on the mounting part 3-2 and are respectively located on both sides of the rocker 4, one of the gaskets 9 is clamped on the side of the rocker 4 and the side of the scraping part 3-1 of the transmission roller 3; the limit nut 11 is fixedly connected to the mounting part 3-2 of the transmission roller 3 through a threaded structure; the compression spring 10 is sleeved on the mounting part 3-2 of the transmission roller 3, and the two ends of the compression spring 10 are pressed against the limit nut 11 and the other gasket 9. Through the above structure, when the roller brush 2 drives the squeezing belt 6 to rotate in the opposite direction, the mounting parts 3-2 at both ends of the driving roller 3 will drive the wear-resistant gasket 9 to rotate together, and the contact surface of the wear-resistant gasket 9 and the swing rod 4 will form friction damping, which will make the relative speed of the squeezing belt 6 not zero when the speed is lower than the speed of the roller brush 2, thereby improving the effect of squeezing the squeezing belt 6 on the surface of the roller brush 2. Furthermore, by adjusting the position of the limit nut 11 and the tightness of the compression spring 10, the damping force of the wear-resistant gasket 9 can be changed, which is more practical.

[0039] Furthermore, the friction damping structure further includes an elastic sleeve (not shown in the figure), which is sleeved between the swing rod 4 and the mounting portion 3-2. In this way, due to the elastic force of the elastic sleeve, the elastic sleeve will always interfere with the inner hole wall of the swing rod 4 and generate a damping force. At the same time, the elastic sleeve can reduce the shaft hole matching requirements and processing costs of the damping structure and increase the service life.

[0040] See also Figures 1-6 The working principle of the adaptive squeezing and scraping floor cleaning device of this embodiment is as follows:

[0041] During operation, the driving roller 3 drives the squeezing belt 6 to perform squeezing and scraping, which can increase the contact area between the roller brush 2 and the squeezing belt 6, thereby scraping off the dirt and sewage attached to the surface of the roller brush 2, and effectively squeezing the roller brush 2 while eliminating the slipping phenomenon as much as possible (slipping easily wears the roller brush 2). Among them, by setting the tensioning roller 7 and the elastic tensioner 8, the squeezing belt 6 can be adaptively tensioned, the squeezing belt 6 can be adjusted, and the good tension of the squeezing belt 6 can be ensured.

[0042] Further, since the two driving rollers 3 are supported by two swing rods 4 that are cross-rotationally connected, and the other ends of the two swing rods 4 are tightened by a tension spring 5. When the diameter of the rotary brush 2 becomes smaller, that is, the acting range on the two driving rollers 3 is reduced. At this time, the tension spring 5 will release part of its potential energy and recover a certain amount of deformation, thereby driving the two swing rods 4 to swing towards each other to ensure that the two driving rollers 3 can continuously press the extrusion belt 6 against the rotary brush 2.

[0043] The above is a preferred embodiment of the present invention, but the embodiments of the present invention are not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. An adaptive scraping floor cleaning device, comprising a chassis, a roller brush and an adaptive scraping mechanism; the roller brush is rotatably connected to the chassis; characterized in that, The adaptive scraping mechanism is arranged between the chassis and the roller brush, and the adaptive scraping mechanism includes a squeezing belt, a driving roller, a swing rod and a tension spring; there are two driving rollers, and the two driving rollers are arranged side by side up and down; the axes of the two driving rollers are parallel to the axis of the roller brush; the squeezing belt is wound around the two driving rollers; engaging teeth are arranged on the inner side surface of the squeezing belt; engaging grooves for cooperating with the engaging teeth are arranged on the surface of the driving roller; there are two groups of swing rods, and the two groups of swing rods are respectively connected to the two ends of the driving roller; each group of swing rods includes two swing rods, and the two swing rods are cross-rotatably connected to the chassis; one end of one swing rod is fixedly connected to one driving roller, and one end of the other swing rod is fixedly connected to the other driving roller; the two ends of the tension spring are respectively fixedly connected to the other ends of the two swing rods in the same group. The driving roller includes a scraping part and two mounting parts, and the two mounting parts are integrally fixed at both ends of the scraping part; the diameter of the mounting part is smaller than the diameter of the scraping part; friction damping structures are arranged on the mounting parts, and the friction damping structures include gaskets, compression springs and limit nuts; the swing rod is rotatably connected to the mounting part of the driving roller; there are two gaskets, and the two gaskets are fixedly arranged on the mounting part and are respectively located on both sides of the swing rod, and one of the gaskets is sandwiched between the side surface of the swing rod and the side surface of the scraping part of the driving roller; the limit nut is fixedly connected to the mounting part of the driving roller through a threaded structure; the compression spring is sleeved on the mounting part of the driving roller, and both ends of the compression spring abut against the limit nut and the other gasket.

2. The self-adaptive scraping floor cleaning device according to claim 1, wherein The adaptive scraping mechanism further includes a tensioning assembly, and the tensioning assembly includes a tensioning roller and two elastic tensioners; the tensioning roller is pressed against the outer surface of the squeezing belt, and both ends of the tensioning roller extend to the first limit mounting groove on the chassis; the first limit mounting groove is used for placing the tensioning roller and allowing the tensioning roller to perform tensioning movement; one ends of the two elastic tensioners are respectively rotatably connected to the two ends of the tensioning roller, and the other ends of the two elastic tensioners are rotatably connected to the rotation centers of the two groups of swing rods.

3. The self - adaptive scraping floor cleaning device according to claim 1, characterized in that, Two second limit mounting grooves are arranged on the chassis, and both of the two second limit mounting grooves are arc-shaped and have the same center as the arc and the rotation center of the swing rod. Both ends of the driving roller respectively extend into the two second limit mounting grooves.

4. The self-adaptive scraping floor cleaning device according to claim 1, characterized in that, Raised patterns are arranged on the outer surface of the squeezing belt.

5. The self-adaptive scraping floor cleaning device according to claim 2, wherein The elastic tensioner is composed of a shock absorber.

6. The self-adaptive scraping floor cleaning device according to claim 1, wherein, The friction damping structure further includes an elastic sleeve, and the elastic sleeve is sleeved between the swing rod and the mounting part.

7. A mopping and sweeping robot, characterized in that, It includes a fuselage and the floor cleaning device according to any one of claims 1-6.

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