WO2019157659A1

WO2019157659A1 - Robotic vacuum cleaner and cleaning mechanism thereof

Info

Publication number: WO2019157659A1
Application number: PCT/CN2018/076717
Authority: WO
Inventors: 李洋
Original assignee: 深圳市赫兹科技有限公司
Priority date: 2018-02-13
Filing date: 2018-02-13
Publication date: 2019-08-22
Also published as: DE202018107280U1; CN110868900A; EP3524119A1; US20210219804A1; JP6813035B2; GB2570973A; GB201819615D0; GB2570973B; JP2020509789A

Abstract

A robotic vacuum cleaner and a cleaning mechanism (100, 200, 300, 400, 500) thereof. The cleaning mechanism (100, 200, 300, 400, 500) comprises a flexible drum (10), a motor driving the flexible drum (10) to rotate, a squeezing press roller (30), a rolling brush (40), and a waste water collection compartment (20). The waste water collection compartment (20) is positioned above the flexible drum (10). The squeezing press roller (30) is arranged near the waste water collection compartment (20). The center of the squeezing press roller (30) is parallel to the center of the flexible drum (10). A surface of the squeezing press roller (30) presses against a surface of the flexible drum (10). The rolling brush (40) touches the flexible drum (10). When the flexible drum (10) rotates, the squeezing press roller (30) squeezes the flexible drum (10) to discharge waste water to the waste water collection compartment (20). The cleaning mechanism (100, 200, 300, 400, 500) has high squeezing efficiency, and can reduce energy consumption and noise.

Description

Sweeping robot and its cleaning mechanism

Technical field

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

Background technique

The sweeping robot is an automatic cleaning device that reduces the pressure on people to clean. The sweeping robot generally adopts the structure of a roller brush, a drum and a sewage collecting tank and a water tank. The clean water supplies clean water from the one end of the sewage collecting tank to the drum, and the sewage squeezed by the drum is sucked into the sewage tank through the negative pressure. The sewage is generally extruded by providing a projection at the bottom of the sewage collection tank, which is pressed against the surface of the drum to extrude the sewage in the drum. In this way, the method of sliding the sewage adopts the sliding friction principle, which increases the load of the motor of the drum, thereby consuming more energy and reducing the battery life of the sweeping robot battery; the depth of the pressing is not large, and the ability to extrude the sewage is limited. The friction between the sewage collection tank and the drum is relatively loud.

Summary of the invention

Based on this, it is necessary for the present invention to provide a cleaning mechanism that has high extrusion capability, can reduce energy consumption, and reduces noise.

The present invention also provides a cleaning robot.

In order to achieve the object of the present invention, the present invention adopts the following technical solutions:

A cleaning mechanism includes a flexible roller, a drum motor that drives the flexible drum to rotate, a squeeze water press roller, a roller brush, and a sewage collection tank; the sewage collection tank is located above the flexible drum, and the water squeeze pressure a roller is disposed adjacent to the sewage collection tank; a center of the squeeze water pressure roller is disposed in parallel with a center of the flexible roller, and a surface of the squeeze water pressure roller is pressed on a surface of the flexible roller; the roller brush contacts The flexible drum; when the flexible drum rotates, the squeeze water press roller presses out the sewage in the flexible drum to the sewage collection tank.

The above cleaning mechanism adopts a method of extruding sewage by a pressure roller, and the resistance to the flexible roller is reduced due to the principle of rolling friction, thereby reducing the energy consumption in the extrusion process, and corresponding to the noise of the sliding friction. The pressing depth of the press roller can be installed as needed, and is not restricted by the sewage collecting tank, so that the depth of the pressing is increased, and the extrusion capability is enhanced.

In some of these embodiments, the pressing pressure roller with a hard material.

In some embodiments, the squeeze water press presses the flexible roller to form a recessed portion of the surface of the flexible roller, and the size of the portion of the squeeze press roller located at the recess is the squeeze water The roller size is 1/4-1/2.

In some of the embodiments, the portion of the squeeze water pressing roller located at the recess portion has a size of 1/3 of the size of the squeeze water press roller.

In some of the embodiments, the number of the squeeze water pressure rollers is one, and the squeeze water pressure roller and the roller brush are respectively located at two sides of the sewage collection tank.

In some of the embodiments, the number of the squeeze water pressure rollers is two, which are respectively disposed on both sides of the sewage collection tank.

In some embodiments, the cleaning mechanism further includes a garbage collection box, the garbage collection box is located at one side of the flexible roller and directly under the roller brush, and one side of the garbage collection box abuts A flexible roller is described.

In some of the embodiments, the cleaning mechanism further includes a squeegee disposed in an arc shape and having one end connected to a side of the garbage collection box abutting the flexible drum.

In some embodiments, the cleaning mechanism further includes a load bearing wheel that is located between the garbage collection box and the squeegee and abuts the garbage collection box and the squeegee, respectively.

It is also a need of the present invention to provide a cleaning robot that includes the cleaning mechanism described.

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 description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only the present invention. For some embodiments, those skilled in the art can obtain drawings of other embodiments according to the drawings without any creative work.

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

Figure 2 is a schematic view showing the structure of the cleaning mechanism of Figure 1;

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

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

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

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

Figure 7 is a schematic view showing the structure of a cleaning mechanism according to another preferred embodiment of the present invention.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the understanding of the present disclosure will be more fully understood.

It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or the element can be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or.

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, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention.

Embodiment 1

1 and 2, a cleaning robot according to a preferred embodiment of the present invention includes a housing and a cleaning mechanism 100 located in the housing. The cleaning mechanism 100 includes a flexible roller 10 and a sewage collection tank located above the flexible roller 10. 20. A water press roller 30 on one side of the flexible drum 10, a roller brush 40 on the side of the flexible drum 10 and contacting the flexible drum 10, and a garbage collection box 50 on the side of the flexible drum 10 and under the roller brush 40, passing through the drum The motor 13 drives the flexible drum 10 to rotate, and the flexible roller 10 can remove stains on the ground when rotated. When the flexible drum 10 rotates, the squeeze water pressure roller 30 presses the sewage in the flexible drum 10 to the sewage collection tank 20 to achieve the purpose of collecting sewage. The roller brush 40 is driven by the roller brush motor to remove the dirt on the flexible roller 10 in time, and the object falls into the garbage collection box 50 below to achieve the purpose of removing the object in time.

The rotating shaft of the flexible drum 10 is made of a hard material, and the peripheral portion is made of a flexible material, for example, made of a sponge, a cotton cloth or the like, so that the water is easily sucked in, and the cleaning function is easily achieved. The flexible drum 10 is driven to rotate by a motor, and the motor is also mounted inside the casing.

The sewage collection tank 20 is located above the flexible drum 10 for collecting the sewage discharged from the flexible drum 10 and for guiding the fresh water into the flexible drum 10 to supply the flexible drum 10 with clean water. The bottom of the sewage collection tank 20 defines a plurality of apertures for the inflow and outflow of sewage water. Embodiment, the sewage collection tank 20 with a small gap between the drum 10 and the flexible, to facilitate rotation of the sewerage water tank 20 and facilitates the flexible cylinder 10 embodiment.

The squeeze water pressure roller 30 has a cylindrical shape, and the squeeze water pressure roller 30 is disposed close to the sewage collection tank 20 to press the sewage into the sewage collection tank 20, and the surface of the squeeze water pressure roller 30 is pressed on the surface of the flexible drum 10, and the present embodiment In the example, there is a gap between the squeeze water press roller 30 and the side surface of the sewage collection tank 20. The squeeze water pressing roller 30 presses the flexible roller 10 such that the surface of the flexible roller 10 forms a recessed portion 12, and the portion of the squeeze water pressing roller 30 located at the recessed portion 12 is 1/4-1/ of the size of the squeeze water press roller 30. 2, this will not affect the normal rotation of the flexible drum 10, but also can squeeze out the sewage. Of course, when the size of the pressing press roller 30 is large, the flexible drum 10 can also be rotated. In the present embodiment, the portion of the squeeze water pressing roller 30 located at the recessed portion 12 has a size of 1/3 of the size of the water press roller 30, which is the optimum down-pressing size.

It can be understood that the number of the squeeze water pressure rollers 30 may be one or several, and a plurality of squeeze water pressure rollers 30 may be disposed without affecting the normal operation of the cleaning mechanism 100. In the present embodiment, the number of the squeeze water pressure rollers 30 is one, and the squeeze water pressure roller 30 and the roller brush 40 are respectively located on both sides of the sewage collection tank 20.

The squeeze water pressure roller 30 is made of a hard material to facilitate the pressing of the flexible drum 10. For example, the water press roller 30 is made of a wood material, a plastic material, a metal material, or the like, and the above objects can be achieved. The squeeze water pressure roller 30 is mounted in the housing, for example, connected to the housing, or mounted in the housing near the sewage collection tank 20 by a mounting bracket.

The garbage collection box 50 is located at one side of the flexible drum 10 and directly under the roller brush 40, and one side of the garbage collection box 50 abuts the flexible drum 10 so that the garbage brushed on the flexible drum 10 can fall into the garbage collection box 50. . The garbage collection box 50 is U-shaped, but the corners are arranged in a square shape.

Further, a scraper 51 is provided on the side of the garbage collection box 50 close to the flexible drum 10 for scraping the garbage on the flexible drum 10. A load bearing wheel 60 is disposed between the garbage collection box 50 and the squeegee 51 for increasing the load-bearing capacity of the garbage collection box 50. The squeegee 51 is disposed in an arc shape and has one end connected to one side of the garbage collection box 50 abutting the flexible drum 10.

Embodiment 2

Referring to FIG. 3, the cleaning mechanism 200 of the present embodiment is different from the first embodiment in that the number of the squeeze water pressure rollers 30 is two, which are respectively disposed on both sides of the sewage collection tank 20. That is, one of the squeeze water pressure rollers 30 is located on the left side of the sewage collection tank 20 and is disposed near the sewage collection tank 20, and another squeeze water pressure roller 30 is located on the right side of the sewage collection tank 20 and is disposed near the sewage collection tank 20, and the roller brush 40 is disposed. Located below the squeeze water pressure roller 30 and disposed adjacent to the squeeze water pressure roller 30 to reduce the volume of the entire cleaning mechanism 100.

Embodiment 3

The cleaning mechanism of this embodiment differs from the first embodiment in that the number of the squeeze water pressure rollers 30 is three, which are respectively disposed on both sides of the sewage collection tank 20. That is, one of the squeeze water pressure rollers 30 is located on the left side of the sewage collection tank 20 and is disposed near the sewage collection tank 20, and another squeeze water pressure roller 30 is located on the right side of the sewage collection tank 20 and is disposed near the sewage collection tank 20, and the roller brush 40 is disposed. Located below the squeeze water pressure roller 30 and disposed adjacent to the squeeze water pressure roller 30 to reduce the volume of the entire cleaning mechanism 100; the last squeeze water pressure roller 30 is disposed below the squeeze water pressure roller 30 on the left side of the sewage collection tank 20. It can also act to squeeze sewage.

Embodiment 4

Referring to FIG. 4 and FIG. 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 for accommodating the clean water of the flexible drum 10 and the flexible drum 10 . Sewage, which is a closed structure.

The cleaning mechanism 70 includes a water tank body 71 and a partitioning member 72 disposed in the water tank body 71. The partitioning member 72 divides the water tank body 71 into a first cavity 73 and a second cavity 74. The first cavity 73 communicates with the first pipe 75. The second cavity 74 is connected to the second pipe 76. The first cavity 73 is for containing clean water or sewage, and the second cavity 74 is for containing sewage or clear water. The spacer 72 can be moved along the inner wall of the water tank body 71 by external force or water pressure to adjust the capacity of the first cavity 73 and the second cavity 74, reduce the volume of the water tank, and is flexible in use. An external force such as a user directly dials the spacer 72. The first conduit 75 and the second conduit 76 communicate with the sewage collection tank 20, respectively.

When the first cavity 73 is used to hold clean water, the second cavity 74 is used to hold sewage; when the first cavity 73 is used to hold sewage, the second cavity 74 is used to hold clean water. In this embodiment, the first cavity 73 is used for containing clean water, and the second cavity 74 is for containing sewage, that is, the first pipe 75 is a clean water pipe, the first cavity 73 is a clean water cavity, and the second pipe 76 is a sewage. The second chamber 74 is a sewage chamber, and the first conduit 75 and the second conduit 76 are both connected to the sewage collection tank 20, the first conduit 75 provides clean water to the sewage collection tank 20, and the second conduit 76 draws the sewage collection tank 20 Sewage.

In this embodiment, the spacer 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. The piston 720 is along the inner wall of the water tank body 71 under the action of water pressure. Moving to adjust the capacity of the first cavity 73 and the second cavity 74. For example, when the volume of clean water entering the tank body 71 is greater than the volume of the sewage entering the tank body 71, the piston 720 is subjected to the water pressure of the clean water and moves toward the sewage chamber; on the contrary, when the sewage enters the tank body 51, the volume is larger than the clear water. Upon entering the volume in the tank body 71, the piston 720 is subjected to the water pressure of the sewage and moves toward the fresh water chamber.

In this embodiment, the side wall of the water tank body 71 defines a guiding hole 77. The guiding member 721 is sealingly mounted in the guiding hole 77 to guide the piston 720 to move. Since the guiding member 721 is sealingly mounted in the guiding hole 77, water leakage can be ensured, for example, a sealing rubber ring is arranged on the periphery of the guiding hole 77. Preferably, the guide hole 77 is opened at a position near the top of the water tank body 71, so that the water tank body 71 can be prevented from leaking water through the guide hole 77. In other embodiments, the guide holes 77 are formed at other positions of the water tank body 71.

In this embodiment, the guiding member 721 is movably connected to the left side or the right side of the water tank body 71, that is, the guiding hole 77 is opened on the left side or the right side of the water tank body 71, and the first duct 75 communicates with the left side of the water tank body 71, the second The duct 76 communicates with the right side of the tank body 71.

Further, a clear water pump 78 is disposed on the first conduit 75 to provide power for the clean water to enter the sewage collection tank 20. The second chamber 74 is connected to a vacuum pump 79 through a pipe. The vacuum pump 79 can increase the negative pressure of the second chamber 74 to suck the sewage in the sewage collection tank 20 into the second chamber 74.

Further, a water level sensor is disposed on the inner wall of the second cavity 74, and an alarm is disposed on the cleaning robot. The alarm is electrically connected to the water level sensor, and the sewage in the second cavity 74 is full. When the water level sensor senses the water level signal, and sends the signal to the alarm, the alarm alarms to remind the user to clean the sewage tank.

Embodiment 5

Referring to FIG. 6, the cleaning mechanism 400 of the present embodiment is different from the fourth embodiment in that the guide member 721 of the two water tanks 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 of the water tank body 71. Or the bottom portion, the first duct 75 communicates with the tank body 71 at an upper position, and the second duct 76 communicates with the tank body 71 at a lower position.

Embodiment 6

Referring to FIG. 7 , the cleaning mechanism 500 of the present embodiment is different from the fourth embodiment in that the spacer 72 includes a leaflet 722 and a rotating shaft 723 of the hinged leaflet 722. The leaflet 722 includes a first partition 724 and a second partition. 725, the first baffle 724 and the second baffle 725 are respectively pivotally connected 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 respectively abut the water tank body 71, and the rotating shaft 723 is connected to the water tank body 71, so that the first partition 73 and the second partition 725 form a first cavity 73 and a second cavity. 74. When the water pressure on one side is large, the first partition 724 and the second partition 725 move in opposite directions to adjust the capacities of the first cavity 73 and the second cavity 74.

The above-mentioned embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A cleaning mechanism comprising the flexible drum, the drum drive motor to rotate the drum flexible, squeeze roller pressure, roller and sewage collecting tank; the sewage collection tank is located above the flexible cylinder, the pressing pressure roller disposed adjacent to the wastewater collection tank; the pressure roller pressing center disposed in parallel with the center of the flexible cylinder, said pressure roller pressing the pressing surface provided on the surface of the flexible cylinder; the The roller brush contacts the flexible drum; when the flexible drum rotates, the squeeze water press roller presses out the sewage in the flexible drum to the sewage collection tank.
The cleaning mechanism according to claim 1, wherein said squeeze water press roller is made of a hard material.
The cleaning mechanism according to claim 1 or 2, wherein the squeeze roller presses the flexible roller to form a recessed portion on a surface of the flexible roller, and the squeeze roller is located in the recess The size of the portion of the portion is 1/4 - 1/2 of the size of the squeeze water press roller.
The cleaning mechanism according to claim 3, wherein a portion of said squeeze water pressing roller located at said recess portion has a size of 1/3 of a size of said squeeze water press roller.
The cleaning mechanism according to claim 1, wherein the number of the squeeze water pressure rollers is one, and the squeeze water pressure roller and the roller brush are respectively located at two sides of the sewage collection tank.
The cleaning mechanism according to claim 1, wherein the number of the squeeze water pressure rollers is two, which are respectively disposed at two sides of the sewage collection tank.
A cleaning mechanism according to claim 1, wherein said cleaning mechanism further comprises a garbage collection box, said garbage collection box being located at one side of said flexible roller and located directly below said roller brush, said garbage One side of the collection box abuts the flexible roller.
The cleaning mechanism according to claim 6, wherein said cleaning mechanism further comprises a squeegee, said squeegee being disposed in an arc shape and having one end connected to a side of said garbage collection box abutting said flexible roller.
A cleaning mechanism according to claim 8, wherein said cleaning mechanism further comprises a load bearing wheel, said load bearing wheel being located between said garbage collection box and said squeegee and respectively abutting said garbage collection box and The scraper.
A sweeping robot comprising the cleaning mechanism of any of claims 1-9.