CN110868900A

CN110868900A - Sweeping robot and cleaning mechanism thereof

Info

Publication number: CN110868900A
Application number: CN201880032512.2A
Authority: CN
Inventors: 李洋
Original assignee: Hizero Technologies Co Ltd
Current assignee: Shenzhen Hertz Appliance Co.,Ltd.
Priority date: 2018-02-13
Filing date: 2018-02-13
Publication date: 2020-03-06
Also published as: DE202018107280U1; GB2570973B; GB2570973A; US20210219804A1; WO2019157659A1; JP6813035B2; GB201819615D0; JP2020509789A; EP3524119A1

Abstract

A sweeping robot and a cleaning mechanism (100,200,300,400,500) thereof, wherein the cleaning mechanism (100,200,300,400,500) comprises a flexible roller (10), a motor for driving the flexible roller (10) to rotate, a water squeezing press roller (30), a rolling brush (40) and a sewage collecting tank (20); the sewage collecting tank (20) is positioned above the flexible roller (10), and the wringing press roller (30) is arranged close to the sewage collecting tank (20); the center of the wringing press roll (30) is parallel to the center of the flexible roller (10), and the surface of the wringing press roll (30) is pressed on the surface of the flexible roller (10); the rolling brush (40) is contacted with the flexible roller (10); when the flexible roller (10) rotates, the water squeezing press roller (30) squeezes out sewage in the flexible roller (10) to the sewage collecting tank (20). The cleaning mechanism (100,200,300,400,500) has strong extrusion capacity, can reduce energy consumption and reduce noise.

Description

Sweeping robot and cleaning mechanism thereof

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to a sweeping robot and a cleaning mechanism thereof.

Background

The sweeping robot is an automatic cleaning device and can reduce the cleaning pressure of people. The robot of sweeping the floor generally adopts the structure of round brush, cylinder and sewage collecting vat and water tank, and the clear water provides the clear water for the cylinder from sewage collecting vat one end, and the sewage that the cylinder was extruded then inhales the sewage case through the negative pressure. The sewage is extruded out in a mode that a bulge is arranged at the bottom of the sewage collecting tank and presses the surface of the roller, so that the sewage in the roller is extruded out. The sewage extrusion mode adopts a sliding friction principle, and the load of a motor of the roller is increased, so that more energy is consumed, and the endurance time of a battery of the sweeping robot is reduced; the downward pressing depth is not large, the sewage extruding capacity is limited, and the friction noise between the sewage collecting tank and the roller is large.

Disclosure of Invention

Therefore, the invention needs to provide a cleaning mechanism with strong extrusion capacity, energy consumption reduction and noise reduction.

The invention also provides a sweeping robot.

In order to realize the purpose of the invention, the invention adopts the following technical scheme:

a cleaning mechanism comprises a flexible roller, a roller motor for driving the flexible roller to rotate, a water squeezing press roller, a roller brush and a sewage collecting tank; the sewage collecting tank is positioned above the flexible roller, and the wringing compression roller is arranged close to the sewage collecting tank; the center of the wringing pressing roller is parallel to the center of the flexible roller, and the surface of the wringing pressing roller is pressed on the surface of the flexible roller; the roller brush contacts the flexible roller; when the flexible roller rotates, the water squeezing press roller presses out the sewage in the flexible roller to the sewage collecting tank.

The cleaning mechanism adopts a mode of extruding sewage by the compression roller, and reduces the resistance to the flexible roller due to the principle of rolling friction, thereby reducing the energy consumption in the extruding process and correspondingly reducing the noise compared with the noise of sliding friction; the depth of impressing of compression roller can be installed as required, does not receive the restriction of sewage collecting vat for the degree of depth grow of pushing down has strengthened the extrusion ability.

In some embodiments, the wringing pressing roller is made of a hard material.

In some embodiments, the water squeezing roller is used for setting the flexible roller so that the surface of the flexible roller forms a concave part, and the size of the part of the water squeezing roller, which is positioned in the concave part, is 1/4-1/2 of the size of the water squeezing roller.

In some of these embodiments, the portion of the wringing roller that is located in the depression is 1/3 the size of the wringing roller.

In some embodiments, the number of the squeezing press rollers is one, and the squeezing press rollers and the rolling brushes are respectively located on two sides of the sewage collecting tank.

In some embodiments, the number of the squeezing press rollers is two, and the squeezing press rollers are respectively arranged on two sides of the sewage collecting tank.

In some embodiments, the cleaning mechanism further comprises a garbage collection box located on one side of the flexible roller and directly below the roller brush, and one side of the garbage collection box abuts against the flexible roller.

In some embodiments, the cleaning mechanism further comprises a scraper, the scraper is arranged in an arc shape, and one end of the scraper is connected with one side of the garbage collection box which is abutted against the flexible roller.

In some embodiments, the cleaning mechanism further comprises a bearing wheel positioned between the waste collection box and the scraper and abutting against the waste collection box and the scraper, respectively.

The invention also needs to provide a sweeping robot, which comprises the cleaning mechanism.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain drawings of other embodiments based on these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of a cleaning mechanism according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of another perspective of the cleaning mechanism of FIG. 1;

FIG. 3 is a schematic view of the overall structure of the cleaning mechanism according to another preferred embodiment of the present invention;

FIG. 4 is a schematic structural view of a cleaning mechanism according to another preferred embodiment of the present invention;

FIG. 5 is a schematic structural view of another perspective of the cleaning mechanism of FIG. 4;

FIG. 6 is a schematic structural view of a cleaning mechanism according to another preferred embodiment of the present invention;

fig. 7 is a schematic structural diagram of a cleaning mechanism according to another preferred embodiment of the invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example one

Referring to fig. 1 and 2, a sweeping robot according to a preferred embodiment of the present invention includes a housing and a cleaning mechanism 100 located in the housing, where the cleaning mechanism 100 includes a flexible roller 10, a sewage collecting tank 20 located above the flexible roller 10, a water squeezing roller 30 located at one side of the flexible roller 10, a rolling brush 40 located at one side of the flexible roller 10 and contacting the flexible roller 10, and a garbage collecting box 50 located at one side of the flexible roller 10 and below the rolling brush 40, and the flexible roller 10 is driven to rotate by a roller motor 13, so that dirt on the ground can be removed when the flexible roller 10 rotates. When the flexible roller 10 rotates, the squeezing roller 30 presses the sewage in the flexible roller 10 to the sewage collecting tank 20, so as to achieve the purpose of collecting the sewage. The rolling brush 40 is driven by a rolling brush motor to brush off dirt on the flexible roller 10 in time, and the dirt falls into the garbage collecting box 50 below, so that the aim of removing the dirt in time is fulfilled.

The rotating shaft of the flexible roller 10 is made of hard material, and the peripheral part is made of flexible material, such as sponge, cotton cloth, etc., so that the clean water is easy to suck and the cleaning function is easy to achieve. The flexible drum 10 is driven to rotate by a motor, which is also mounted inside the housing.

A sewage collecting tank 20 is located above the flexible drum 10 for collecting sewage pressed out of the flexible drum 10 and for guiding clean water to flow into the flexible drum 10 to provide clean water for the flexible drum 10. The bottom of the sewage collecting tank 20 is provided with a plurality of small holes for flowing out clean water and flowing in sewage. In this embodiment, a small gap is formed between the sewage collecting tank 20 and the flexible drum 10, so that sewage can flow into the sewage collecting tank 20 conveniently and the flexible drum 10 can rotate conveniently.

The wringing pressing roller 30 is cylindrical, the wringing pressing roller 30 is close to the sewage collecting tank 20 so as to press sewage into the sewage collecting tank 20, the surface of the flexible roller 10 is pressed by the surface of the wringing pressing roller 30, and in the embodiment, a gap is formed between the wringing pressing roller 30 and the side surface of the sewage collecting tank 20. The wringing pressing roller 30 is pressed on the flexible roller 10 to form a concave part 12 on the surface of the flexible roller 10, and the part of the wringing pressing roller 30, which is positioned in the concave part 12, has the size of 1/4-1/2 of the wringing pressing roller 30, so that the normal rotation of the flexible roller 10 is not influenced, and sewage can be pressed out. Of course, the flexible cylinder 10 can also rotate when the pressing size of the wringing pressing roller 30 is large. In this embodiment, the size of the portion of the wringing roller 30 that is located in the depression 12 is 1/3 the size of the wringing roller 30, which is the optimal pressing size.

It is understood that the number of the squeeze rollers 30 may be one or several, and a plurality of squeeze rollers 30 may be provided without affecting the normal operation of the cleaning mechanism 100. In this embodiment, the number of the squeezing rollers 30 is one, and the squeezing rollers 30 and the rolling brushes 40 are respectively located on two sides of the sewage collecting tank 20.

The wringing roller 30 is made of a hard material to facilitate squeezing of the flexible cylinder 10. For example, the water squeezing roller 30 is made of wood material, plastic material, metal material, etc., and the above-mentioned objects can be achieved. The wringing pressure roller 30 is mounted within the housing, for example in connection with the housing, or mounted within the housing adjacent the sewage collection tank 20 by means of a mounting bracket.

The garbage collection box 50 is located on one side of the flexible roller 10 and directly below the rolling brush 40, and one side of the garbage collection box 50 abuts against the flexible roller 10, so that garbage brushed down on the flexible roller 10 can fall into the garbage collection box 50. The garbage collection box 50 is U-shaped, but the corners are square.

Further, a scraper 51 is provided at a side of the garbage collection box 50 adjacent to the flexible drum 10 for scraping the garbage on the flexible drum 10. A bearing wheel 60 is disposed between the garbage collection box 50 and the scraper 51 for increasing the bearing capacity of the garbage collection box 50. The scraper 51 is arc-shaped and has one end connected to one side of the garbage collecting box 50 abutting against the flexible roller 10.

Example two

Referring to fig. 3, the cleaning mechanism 200 of the present embodiment is different from the first embodiment in that the number of the squeezing rollers 30 is two, and the squeezing rollers are respectively disposed on two sides of the sewage collecting tank 20. Namely, one of the squeeze rollers 30 is located on the left side of the sewage collection tank 20 and disposed close to the sewage collection tank 20, the other squeeze roller 30 is located on the right side of the sewage collection tank 20 and disposed close to the sewage collection tank 20, and the roller brush 40 is located below the squeeze roller 30 and disposed close to the squeeze roller 30, so as to reduce the volume of the entire cleaning mechanism 100.

EXAMPLE III

The cleaning mechanism of this embodiment is different from the first embodiment in that the number of the squeezing rollers 30 is three, and the three squeezing rollers are respectively disposed on two sides of the sewage collecting tank 20. Namely, one of the squeezing rollers 30 is positioned at the left side of the sewage collecting tank 20 and is arranged close to the sewage collecting tank 20, the other squeezing roller 30 is positioned at the right side of the sewage collecting tank 20 and is arranged close to the sewage collecting tank 20, and the roller brush 40 is positioned below the squeezing roller 30 and is arranged close to the squeezing roller 30, so as to reduce the volume of the whole cleaning mechanism 100; the last wringing pressing roller 30 is arranged below the wringing pressing roller 30 on the left side of the sewage collecting tank 20, and can also play a role in squeezing sewage.

Example four

Referring to fig. 4 and 5, the cleaning mechanism 300 of the present embodiment is different from the first embodiment in that the cleaning mechanism 100 further includes a water tank 70, and the water tank 70 is a closed structure for containing clean water for cleaning the flexible roller 10 and sewage generated by the flexible roller 10.

The cleaning mechanism 70 comprises a water tank body 71 and a partition 72 arranged in the water tank body 71, the partition 72 divides the water tank body 71 into a first cavity 73 and a second cavity 74, the first cavity 73 is communicated with a first pipeline 75, the second cavity 74 is communicated with a second pipeline 76, the first cavity 73 is used for containing clean water or sewage, and the second cavity 74 is used for containing sewage or clean water. The partition 72 can move along the inner wall of the tank body 71 under the action of external force or water pressure to adjust the capacity of the first cavity 73 and the second cavity 74, so that the volume of the tank is reduced, and the use is flexible. An external force such as a user directly pokes the spacer 72. The first and

second pipes

75 and 76 communicate with the sewage collecting tank 20, respectively.

When the first chamber 73 is used for containing clean water, the second chamber 74 is used for containing sewage; the second chamber 74 is used to hold clean water when the first chamber 73 is used to hold contaminated water. In this embodiment, the first cavity 73 is used for containing clean water, the second cavity 74 is used for containing sewage, namely, the first pipeline 75 is a clean water pipeline, the first cavity 73 is a clean water cavity, the second pipeline 76 is a sewage pipeline, the second cavity 74 is a sewage cavity, the first pipeline 75 and the second pipeline 76 are both communicated with the sewage collecting tank 20, the first pipeline 75 provides clean water for the sewage collecting tank 20, and the second pipeline 76 absorbs sewage in the sewage collecting tank 20.

In this embodiment, the separating member 72 includes a piston 720 and a guiding member 721, the piston 720 abuts against the inner wall of the water tank body 71, the guiding member 721 is movably connected to the water tank body 71, and the piston 720 moves along the inner wall of the water tank body 71 under the action of water pressure to adjust the capacities of the first cavity 73 and the second cavity 74. For example, when the volume of the clean water entering the water tank body 71 is larger than the volume of the sewage entering the water tank body 71, the piston 720 moves towards the sewage cavity under the action of the water pressure of the clean water; on the contrary, when the volume of the sewage entering the water tank body 51 is larger than the volume of the clean water entering the water tank body 71, the piston 720 is moved toward the clean water chamber by the water pressure of the sewage.

In this embodiment, a guide hole 77 is formed in a side wall of the tank body 71, and the guide member 721 is hermetically installed in the guide hole 77 to guide the movement of the piston 720. Since the guide 721 is sealingly installed in the guide hole 77, water tightness can be ensured, for example, a seal rubber ring is provided around the guide hole 77. Preferably, the guide hole 77 is opened at a position near the top of the tank body 71, so that water leakage from the tank body 71 through the guide hole 77 can be more prevented. In other embodiments, the guiding hole 77 is opened at other positions of the tank body 71.

In this embodiment, the guide member 721 is movably connected to the left or right side of the tank body 71, that is, the guide hole 77 is opened on the left or right side of the tank body 71, the first pipe 75 is connected to the left side of the tank body 71, and the second pipe 76 is connected to the right side of the tank body 71.

Further, a clean water pump 78 is provided in the first conduit 75 to provide power for clean water to enter the wastewater collection tank 20. The second chamber 74 is connected to a vacuum pump 79 through a pipeline, and the vacuum pump 79 can increase negative pressure for the second chamber 74 to suck the sewage in the sewage collecting tank 20 into the second chamber 74.

Still further, a water level sensor is arranged on the inner wall of the second cavity 74 close to the top, an alarm is arranged on the sweeping robot and electrically connected with the water level sensor, when sewage in the second cavity 74 is full, the water level sensor senses a water level signal and sends the signal to the alarm, and the alarm gives an alarm to remind a user of cleaning the sewage tank.

EXAMPLE five

Referring to fig. 6, a difference of the cleaning mechanism 400 of the present embodiment from the fourth embodiment is that the guide member 721 of the dual-purpose water tank 70 is movably connected to the top or bottom of the water tank body 71, that is, the guide hole 77 is opened at the top or bottom of the water tank body 71, the first pipe 75 is connected to the upper portion of the water tank body 71, and the second pipe 76 is connected to the lower portion of the water tank body 71.

EXAMPLE six

Referring to fig. 7, a cleaning mechanism 500 of the present embodiment is different from the fourth embodiment in that the partition 72 includes a hinge 722 and a rotating shaft 723 for pivoting the hinge 722, the hinge 722 includes a first partition 724 and a second partition 725, and the first partition 724 and the second partition 725 are respectively pivoted to the rotating shaft 723 to respectively rotate along the rotating shaft 723 under the action of water pressure. The first partition 724 and the second partition 725 abut against the tank body 71, and the rotating shaft 723 is connected to the tank body 71, so that the first cavity 73 and the second cavity 74 are formed between the first partition 724 and the second partition 725. When the water pressure on one side is high, the first diaphragm 724 and the second diaphragm 725 move in opposite directions to adjust the capacity of the first chamber 73 and the second chamber 74.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

A cleaning mechanism is characterized by comprising a flexible roller, a roller motor for driving the flexible roller to rotate, a water squeezing press roller, a roller brush and a sewage collecting tank; the sewage collecting tank is positioned above the flexible roller, and the wringing compression roller is arranged close to the sewage collecting tank; the center of the wringing pressing roller is parallel to the center of the flexible roller, and the surface of the wringing pressing roller is pressed on the surface of the flexible roller; the roller brush contacts the flexible roller; when the flexible roller rotates, the water squeezing press roller presses out the sewage in the flexible roller to the sewage collecting tank.
The cleaning mechanism of claim 1, wherein: the water squeezing press roller is made of hard materials.
The cleaning mechanism of claim 1 or 2, wherein: the water squeezing roller is used for pressing the flexible roller to enable the surface of the flexible roller to form a concave part, and the size of the part of the water squeezing roller, which is positioned in the concave part, is 1/4-1/2 of the size of the water squeezing roller.
The cleaning mechanism of claim 3, wherein: the size of the part of the wringing roller located in the depression is 1/3 the size of the wringing roller.
The cleaning mechanism of claim 1, wherein: the number of the water squeezing press rollers is one, and the water squeezing press rollers and the rolling brushes are respectively positioned on two sides of the sewage collecting tank.
The cleaning mechanism of claim 1, wherein: the number of the water squeezing press rollers is two, and the two water squeezing press rollers are respectively arranged on two sides of the sewage collecting tank.
The cleaning mechanism of claim 1, wherein: the cleaning mechanism further comprises a garbage collection box, the garbage collection box is located on one side of the flexible roller and located under the rolling brush, and one side of the garbage collection box is abutted to the flexible roller.
The cleaning mechanism of claim 6, wherein: the cleaning mechanism further comprises a scraper which is arc-shaped and one end of the scraper is connected with the garbage collection box in an abutting mode and one side of the flexible roller.
The cleaning mechanism of claim 8, wherein: the cleaning mechanism further comprises a bearing wheel, and the bearing wheel is located between the garbage collection box and the scraper and is respectively abutted against the garbage collection box and the scraper.
A sweeping robot comprising a cleaning mechanism as claimed in any one of claims 1 to 9.