CN111166241B

CN111166241B - Floor sweeping robot

Info

Publication number: CN111166241B
Application number: CN201811338254.9A
Authority: CN
Inventors: 程杰锋; 李清; 胡斯特; 李忠华; 金成镇; 付涛
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2022-03-01
Anticipated expiration: 2038-11-09
Also published as: CN111166241A

Abstract

The invention discloses a sweeping robot, which comprises: a chassis having a mounting side facing a surface to be cleaned; a drive wheel mounted on the chassis; the supporting piece is installed on the installation side of the chassis, and the distance between the bottom of the supporting piece and the chassis is smaller than or equal to the distance between the bottom of the driving wheel and the chassis. According to the technical scheme, the supporting piece is arranged on the chassis, so that the distance between the chassis and the ground is effectively controlled.

Description

Floor sweeping robot

Technical Field

The invention relates to the technical field of sweeping robots, in particular to a sweeping robot.

Background

With the development of economy at any time, the sweeping robot has come into the lives of people. The chassis of the existing sweeping robot has certain deformation due to errors in the processes of processing, manufacturing and mounting. When in use, the gap between the chassis and the ground is often too small, and even the chassis is in contact with the ground. So, can't guarantee the smooth and easy brush suction inlet that enters into of pressure and the dust of scrubbing brush, will reduce the work efficiency of robot of sweeping the floor by a wide margin.

Disclosure of Invention

The invention mainly aims to provide a sweeping robot, which aims to control the distance between a chassis and the ground so as to ensure the cleaning effect of the sweeping robot.

In order to achieve the above object, the invention provides a sweeping robot, comprising:

a chassis having a mounting side facing a surface to be cleaned;

a drive wheel mounted on the chassis;

the supporting piece is installed on the installation side of the chassis, and the distance between the bottom of the supporting piece and the chassis is smaller than or equal to the distance between the bottom of the driving wheel and the chassis.

Preferably, the distance between the supporting piece and the bottom of the driving wheel is 0.6-5 mm.

Preferably, the support member comprises a support column, one end of the support column is connected with the chassis, and the other end of the support column extends in a direction away from the chassis.

Preferably, the support member is rotatably connected to the chassis.

Preferably, the support comprises a support rolling ball, the chassis is provided with a mounting cavity, and the support rolling ball is mounted in the mounting cavity and partially protrudes out of the chassis in a protruding manner.

Preferably, the supporting member comprises a roller, and two ends of the roller are provided with rotating shafts which are rotatably connected with the chassis.

Preferably, an accommodating cavity is formed in the mounting side of the chassis, a shaft hole is formed in the side wall of the accommodating cavity, the roller is mounted in the accommodating cavity, and the rotating shaft is mounted in the shaft hole; the part of the roller protrudes out of the chassis.

Preferably, a floor brush suction port is further formed in the base plate, and the supporting piece is arranged at two ends of the front side of the floor brush suction port.

Preferably, the chassis is further provided with a plurality of floor brush suction openings, and the support members are arranged at the rear side of the floor brush suction openings and arranged in a triangular shape.

Preferably, a plurality of protrusions arranged at intervals are arranged on the chassis at the front side of the floor brush suction port, a pressurizing groove is formed between every two adjacent protrusions, and the width of the pressurizing groove is 6-15 mm.

According to the technical scheme, in the working process of the sweeping robot, the position of the supporting piece, which is far away from the chassis, is suspended in the air in a normal state, and a gap is formed between the supporting piece and the ground; when the chassis leads to the chassis to take place deformation owing to make, machining error, one or more reasons in self intensity and the motion operating mode, support piece keep away from the position on chassis will with ground contact, support piece supports the chassis, prevents chassis and ground contact to effectual assurance chassis and the distance between the ground, the scrubbing brush with the robot of guaranteeing to sweep the floor has reasonable pressure, guarantees that the dust has sufficient space and enters into the scrubbing brush suction inlet, thereby guarantees the work efficiency and the working effect of the robot of sweeping the floor.

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 or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of a sweeping robot according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure at the bottom of FIG. 1;

FIG. 3 is a schematic axial view of the embodiment of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged view of a portion of FIG. 3 at B;

FIG. 6 is a schematic structural view of the support member of FIG. 5;

fig. 7 is a schematic structural view of the sweeping robot being placed on the ground;

FIG. 8 is an enlarged partial view at C of FIG. 7;

FIG. 9 is a schematic structural view of another embodiment of the bottom of FIG. 1;

FIG. 10 is an enlarged partial schematic view of FIG. 9 at D;

FIG. 11 is a schematic structural view of another embodiment of the bottom of FIG. 1;

FIG. 12 is an enlarged partial schematic view at E of FIG. 11;

FIG. 13 is a schematic structural view of a further embodiment of the bottom of FIG. 1;

FIG. 14 is an enlarged partial schematic view at F of FIG. 13;

FIG. 15 is a schematic structural view of the wiper strip of FIG. 2;

FIG. 16 is a schematic view of the top of the base pan;

FIG. 17 is a schematic view of another angle of the top of the base pan;

FIG. 18 is a schematic view of the dirt cup of FIG. 17;

FIG. 19 is a schematic view of the internal structure of the dirt cup;

fig. 20 is a schematic structural view of another embodiment of the top of the chassis.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Also, the meaning of "and/or" appearing throughout is to include three versions, exemplified by "A and/or B" including either version A, or version B, or versions in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention mainly provides a sweeping robot, which can flexibly move in a room or a place with sweeping and is small in size. In order to improve the working efficiency of the sweeping robot and enable the sweeping robot to work more stably and reliably, the application provides a series of improved schemes for the chassis 100. The method mainly comprises the following aspects that the strength of the scraper bar 400 in the working process is improved by additionally arranging the supporting structure 500 at the rear side of the scraper bar 400; the supporting member 600 is arranged on the chassis 100 to prevent the chassis 100 from contacting with the chassis 100, so as to achieve the purpose of controlling the gap between the chassis 100 and the ground; adjusting the positions of the driving wheel and the driving motor relative to the floor brush suction opening 110; readjust the position and structure between the dust cup 700 and the installation cavity of the drum brush 300, and the like.

To facilitate the description of the structural layout of the chassis 100, the operation of the sweeping robot will be briefly described. The sweeping robot comprises a chassis 100, wherein a driving wheel which is contacted with the ground is arranged on the chassis 100, and the driving wheel bears the chassis 100 and other parts to move; the middle of the chassis 100 is provided with a floor brush suction opening 110, a rolling brush 300 is arranged in the floor brush suction opening 110, a scraping strip 400 is arranged at the rear side of the floor brush suction opening 110, the floor brush suction opening 110 and the rolling brush 300 collect the dirt such as the dust corresponding to the floor brush suction opening 110 into a dust cup 700, the scraping strip 400 blocks the dirt which is not coming and sucked at the rear side, and the dirt which is adhered to the ground is scraped to clean the rolling brush 300 and the floor brush suction opening 110. The rolling brush 300 can not only brush up the dirt adhered to the ground, but also bring the dirt into the ground brush mouth. Under the negative pressure, dirt is drawn into the dirt cup 700 above the chassis 100, wherein the dirt cup 700 is disposed at the front side of the chassis 100. A dust suction motor 900, a storage battery assembly 950, a driving wheel mounting structure 130, a mounting cylinder 800 for mounting the drum brush 300, a driving motor for the drum brush 300, and the like are further provided above the chassis 100. Wherein, the mounting cylinder 800 extends along the radial direction of the chassis 100, the dust cup 700 is arranged at the front side of the mounting cylinder 800, the dust collection motor 900 is arranged at the rear side of the mounting cylinder 800, and the air outlets of the dust collection motor 900 and the dust cup 700 are communicated through a hose; an air outlet is formed in the front side of the mounting cylinder 800, an air suction port is formed in the rear side of the dust cup 700, and the air outlet of the mounting cylinder 800 corresponds to and is communicated with the air suction port of the dust cup 700; two mounting structures for mounting driving wheels are respectively arranged on the chassis 100 at the rear side of the mounting cylinder 800 and close to the two ends of the mounting cylinder, and the dust collection motor 900 and the storage battery are both positioned between the two mounting structures; the driving motor of the drum brush 300 is installed on the installation cylinder 800 to make room for the installation structure of the driving wheel, thereby further improving the space utilization rate. Through the arrangement of the parts of the chassis 100, the space is fully and reasonably utilized, so that the chassis 100 is compact in structure, and the air duct path is short and smooth, thereby not only being beneficial to improving the stability of the structure of the chassis 100, but also being beneficial to improving the dust collection efficiency of the sweeping robot. The driving wheel, the battery, the dust collection motor 900 and the like are placed on the rear side of the chassis 100, so that the gravity center of the chassis 100 is arranged behind, the front side of the chassis 100 is prevented from contacting with the ground in the advancing process, the suction port 110 is favorably brushed, and the working stability of the sweeping robot is favorably improved. In order to protect the bottom and top structure, a cover is provided on the base plate 100, and a cover 200 is provided on the base plate 100 to protect the above components therein.

The specific structure of the bottom and the top of the chassis 100 of the sweeping robot will be mainly described, and for the convenience of reading, the improved structure of the bottom of the chassis 100 will be described first, and the scraper bar 400 and the supporting structure 500 thereof and the supporting member 600 for maintaining the distance between the chassis 100 and the ground will be described in turn; the improved structure of the top of the chassis 100 will be described.

First, describing the scraper bar 400 and the supporting structure 500 thereof, referring to fig. 1 to 20, in an embodiment of the present invention, the sweeping robot includes:

a chassis 100, said chassis 100 having a mounting side 170 facing a surface to be cleaned;

a wiper strip 400, said wiper strip 400 being mounted on the mounting side 170 of the chassis 100, said wiper strip 400 having a dirty facing side and a dirty side disposed opposite each other;

a support structure 500, wherein the support structure 500 is mounted on the chassis 100 and is located on the soiled side of the wiper strip 400.

Specifically, in the present embodiment, the chassis 100 may have a variety of shapes, such as a circle, an ellipse, a rectangle, a triangle, or other polygons, for example, and the shape is a circular shape, which is beneficial for the sweeping robot to flexibly clean the dirt at each corner. The scraping strip 400 is arranged in a long strip shape, and the scraping strip 400 extends along the length direction of the floor brush suction opening 110. The wiper strip 400 has elasticity and is made of rubber or plastic, etc. The wiping strip 400 is located at the rear side of the floor brush suction opening 110, and is caught by the wiping strip 400 when dirt is not sucked into the floor brush suction opening 110, and is continuously loaded into the dust cup 700 by the floor brush suction opening 110 and the roll brush 300. During the abutment and pressing of the wiper strip 400, the wiper strip 400 can wipe off the dirt having a certain degree of adhesion to the ground. When the volume of the dirty object is large, the hardness is high, or the adhesion degree with the ground is high, the scraper bar 400 is easy to deform due to the elasticity of the scraper bar 400. When the deformation of the wiper strip 400 occurs to a certain extent, the wiper strip 400 abuts against the supporting structure 500 at the rear side thereof, and the supporting structure 500 hinders or prevents the wiper strip 400 from continuing to deform, so that the wiper strip 400 has a greater deformation resistance, and therefore, the dirt which may originally leak from the bottom of the squeegee continues to be squeezed, and finally the dirt is scraped from the ground or the dirt is retained at the side of the wiper strip 400 facing the floor brush suction port 110. It should be noted that the side of the scraper bar 400 facing the dirt is the side of the scraper bar 400 facing the dirt, i.e. the front side of the scraper bar 400; the dirty side of the wiper strip 400 is the side of the wiper strip 400 facing away from the dirty, i.e., the back side of the wiper strip 400.

The supporting structure 500 may have many forms, and in general, any structure that can block or prevent the wiper strip 400 from deforming may be used, for example, a bump, a convex column, a convex plate, and the like, and the bump may be a plurality of bumps arranged along the length direction of the wiper strip 400, or may be a single block extending along the length direction of the wiper strip 400. The material of the support structure 500 may be many, such as hard metal, tempered glass, hard plastic, etc., and the same material as the chassis 100 is taken as an example. By arranging the material of the supporting structure 500 to be the same as that of the chassis 100, after the supporting structure 500 and the chassis are connected, the supporting structure is not easily damaged due to too large difference in rigidity in the process of bearing force on the supporting structure 500, which is beneficial to improving the service life and the working stability of the supporting structure 500.

Of course, in some embodiments, the support structure 500 is integrally formed with the chassis 100 in order to simplify the manufacturing, fabrication, and assembly process of the support structure 500. By integrally forming the support structure 500 with the chassis 100, it is also beneficial to improve the bearing strength of the support structure 500.

In some embodiments, in order to improve the supporting effect of the supporting structure 500, the wiper strip 400 has elasticity and/or flexibility, and the rigidity of the supporting structure 500 is greater than that of the wiper strip 400. By setting the rigidity of the support structure 500 to be greater than the rigidity of the wiper strip 400, the support structure 500 can give a greater resistance to deformation when the wiper strip 400 is deformed to abut against the support structure 500, thereby more effectively hindering or preventing the wiper strip 400 from continuing to deform. Thereby being beneficial to improving the working efficiency of the scraping strip 400 and the working efficiency of the sweeping robot.

In some embodiments, in order to ensure the working effect of the scraper 400, the length of the scraper 400 is greater than the length of the floor brush suction opening 110 of the cleaning robot, and two ends of the scraper 400 respectively extend out of two ends of the floor brush suction opening 110. Therefore, dirt such as dust can not be collected due to the fact that the floor brush suction openings 110 do not exist, the dirt leaks from the two ends of the scraping strip 400 and can not be collected through the floor brush suction openings 110, and the cleaning efficiency of the floor sweeping robot is improved.

In the technical scheme of the invention, when the side of the scraping strip 400 facing the dirty side is collided with large-particle garbage or garbage stuck with the ground in the working process of the sweeping robot, the scraping strip 400 bends and deforms towards the dirty side, when the amount of deformation of the wiper strip 400 reaches a predetermined level (it is worth mentioning that the amount of deformation is defined by the distance between the wiper strip 400 and the support structure 500, which may be greater than or equal to zero), the soiled side of the wiper strip 400 abuts the support structure 500, the wiper strip 400 stops deforming, which operates under the support of the support structure 500, the support structure 500 transmits force to the garbage through the wiper strip 400, due to the support of the support structure 500, to sweep the garbage to the floor brush suction port 110, therefore, when large-particle garbage is smoothly cleaned, the distance between the scraping strip 400 and the ground is kept, the cleaning effect of small-particle garbage is guaranteed, and the cleaning effect of the scraping strip 400 is greatly improved.

It should be noted that, in order to improve the supporting effect of the supporting structure 500, the distance between the supporting surface of the supporting structure 500 and the soiled side of the wiper strip 400 is less than or equal to 2-4 mm. The distance between the supporting surface of the supporting structure 500 facing the bar 400 and the soiled side determines the distance that the bar 400 can be deformed, and also affects the distance that the cleaning part 420 of the bar 400 is separated from the floor surface due to the deformation. When the distance between the bottom of the scraper bar 400 and the ground is too large, the distance between the bottom of the scraper bar and the ground is too large, and dirt is easily leaked; when the distance therebetween is too small, the deformable space and the amount of deformation of the wiper strip 400 are too small, and the wiper strip 400 is easily damaged.

In order to improve the function of the supporting structure 500, the distance between the bottom of the supporting structure 500 and the chassis 100 is less than 1-3 mm than the distance between the bottom of the wiper strip 400 and the chassis 100. When the ground is a plane, the distance from the bottom of the scraping strip 400 to the ground is 1-3 mm smaller than the distance from the supporting structure 500 to the ground. When the scraper bar 400 deforms, it needs to move up 1-3 mm to abut against the supporting structure 500. Thereby controlling the deformation of the scraping strip 400 and simultaneously ensuring the distance between the deformed scraping strip 400 and the ground. When the distance is too large, the distance between the wiper strip 400 and the ground becomes large, which easily causes leakage of dirt; when the distance is too small, the amount of deformation of the wiper strip 400 is too small, and the wiper strip 400 is easily damaged, which is disadvantageous for use.

In some embodiments, in order to improve the mounting convenience and mounting stability of the wiper strip 400, the wiper strip 400 includes a fixing portion 410 and a cleaning portion 420 connected to the fixing portion 410; the chassis 100 is provided with an installation groove 190, and the fixing portion 410 is inserted into the installation groove 190.

The cross-sectional shape of the scraping bar 400 can be V-shaped, trapezoidal, triangular, rectangular, etc., in this embodiment, the cross-section is "T" shaped, the cross-section of the mounting groove 190 is rectangular, and an opening is opened on the side back to the chassis 100. The lateral portion (the fixing portion 410) of the bar 400 is inserted into the mounting groove 190, and the vertical portion (the cleaning portion 420) of the bar 400 extends from the mounting groove 190 at the opening. When the scraper bar 400 is mounted and dismounted, only the end part of the mounting groove 190 needs to be inserted or pulled out, which is very convenient. The efficiency of the installation, the disassembly and the maintenance of the scraper bar 400 can be improved, and the replacement of the scraper bar 400 can be facilitated. By arranging the cross section of the wiper strip 400 to be T-shaped, when the wiper strip 400 is stressed, the cleaning part 420 transmits force to the fixing part 410, the fixing part 410 is fixed under the action of the mounting groove 190, and the cleaning part 420 is elastically deformed. Thus, the wiper strip 400 can be stably mounted while effectively utilizing the entire force component.

Several forms of support structure 500 are described in detail below:

the support structure 500 includes a plurality of support protrusions 160, and the plurality of support protrusions 160 are arranged along the length direction of the wiper strip 400. Wherein the cross section of the supporting protrusion 160 is one of rectangular, triangular, circular and oval. The support protrusion 160 has one end connected to the base plate 100 and the other end extending away from the base plate 100. Adjacent support protrusions 160 have a gap therebetween. Because the volume of the supporting protrusion 160 is relatively small, the direct distance between the force-bearing portion and the fixing portion 410 is short, so that the force-bearing moment of the supporting protrusion 160 is small, which is beneficial to improving the bearing capacity of the supporting protrusion 160.

In some embodiments, the support structure 500 includes support ribs disposed along the length of the flight. The support rib is a complete continuous rib. When the support rib is extruded by the scraping bar 400, the contact area between the support rib and the scraping bar 400 is large, so that the scraping bar 400 can be better prevented from further deformation, and the work efficiency is improved.

Referring to fig. 13 and 14, it is worth explaining that, in some embodiments, in order to adjust the distance between the wiper strip 400 and the ground after contacting the support rib and simultaneously improve the service life of the wiper strip 400, the side of the support rib away from the chassis 100 is provided with an avoiding surface, the distance between the avoiding surface and the wiper strip 400 gradually increases from the chassis 100 to the bottom, and the avoiding surface is arranged in an arc shape. By arranging the avoidance surface, after the scraping strip 400 is contacted with the support rib, the deformation of the scraping strip extends along the avoidance surface, so that the distance between the scraping strip 400 and the ground is gradually reduced, and the scraping strip is suitable for dirt with different sizes so as to improve the adaptability; meanwhile, since the avoiding surface is arc-shaped, when the wiper strip 400 contacts with the avoiding surface, the wiper strip 400 is attached to the avoiding surface, the contact area between the wiper strip 400 and the avoiding surface is greatly increased, and the wiper strip 400 is prevented from having large stress, thereby being beneficial to long-term use of the wiper strip 400.

In some embodiments, the number of the supporting structures 500 is two, and the supporting structures are respectively arranged on the dirty side and the dirty side of the scraper bar 400, so as to adapt to the characteristic working condition. For example, when the dirt is adhered to the ground to a high degree and the scraper bar 400 cannot scrape the dirt once, the scraper bar 400 is required to scrape the dirt several times. In order to improve the working efficiency of the scraper bar 400, when the sweeping robot completely scrapes dirty dirt from the back in the process of moving back the scraper bar 400, the scraper bar 400 can also be supported by the supporting structure 500, so that the working efficiency of the scraper bar 400 is greatly improved. In addition, the damage of the wiper strip 400 caused by the excessively large deformation of the wiper strip 400 can be prevented in the process of backing the sweeping robot, and therefore, the support structures 500 are arranged on the two sides of the wiper strip 400, which is beneficial to prolonging the service life of the wiper strip 400.

The support 600 for maintaining the distance between the chassis 100 and the ground is described below.

A sweeping robot comprising:

a driving wheel mounted on the chassis 100;

a support member 600, the support member 600 being mounted to the mounting side 170 of the chassis 100, a distance between a bottom of the support member 600 and the chassis 100 being less than or equal to a distance between a bottom of the driving wheel and the chassis 100.

Specifically, in this embodiment, the chassis 100 has a mounting side 170 and a supporting side 180, the mounting side 170 being the side that faces the ground during operation, i.e. the bottom of the chassis 100 as mentioned in the above embodiments, and the supporting side 180 being the top of the chassis 100. The driving wheels are arranged on two sides of the rear part of the chassis 100 (the rear side of the mounting barrel 800), and when the sweeping robot works, the driving wheels are in contact with the ground.

In normal operation, the distance between the bottom of the supporting member 600 and the chassis 100 is less than or equal to the distance between the bottom of the driving wheel and the chassis 100, that is, there is a gap between the bottom of the supporting member 600 and the ground. When the chassis 100 is deformed or encounters a collision or the like, so that the chassis 100 is lowered, one end of the support 600 away from the chassis 100 abuts against the ground to ensure that the chassis 100 keeps a preset distance from the ground.

The support member 600 may be in many forms, and may be fixedly connected to the chassis 100, and may be in sliding friction with the ground when it contacts the ground; or may be movably connected to the chassis 100 for rolling friction when in contact with the ground. The number of the supporting members 600 is plural, and the plural supporting members 600 are distributed on the base plate 100. When the support 600 is the support protrusion 160, the cross-section of the support protrusion 160 is one of rectangular, triangular, circular and oval. The support protrusion 160 has one end connected to the base plate 100 and the other end extending away from the base plate 100. Alternatively, the supporting member 600 includes a supporting column, one end of which is connected to the chassis 100, and the other end of which extends away from the chassis 100. The support 600 may also be a ball, a roller, or the like, and the support 600 rolls when the support 600 is in contact with the ground.

In the technical scheme of the invention, in the working process of the sweeping robot, in a normal state, the position of the supporting piece 600 far away from the chassis 100 is suspended, and a gap is formed between the supporting piece and the ground; when chassis 100 is because manufacturing, machining error, when one or more reasons in self intensity and the motion operating mode lead to chassis 100 to take place deformation, support piece 600 keeps away from the position of chassis 100 will with ground contact, support piece 600 supports chassis 100, prevent chassis 100 and ground contact, thereby effectual assurance chassis 100 and the distance between the ground, the scrubbing brush with the assurance robot of sweeping the floor has reasonable pressure, guarantee that the dust has sufficient space and enters into scrubbing brush suction inlet 110, thereby guarantee the work efficiency and the working effect of robot of sweeping the floor.

In order to ensure the supporting effect of the supporting member 600, the distance between the bottom of the supporting member 600 and the bottom of the driving wheel is 0.6-5 mm. When the sweeping robot is placed on the ground, the distance between the bottom of the supporting piece 600 and the ground is 0.6-5 mm. Namely, when the sweeping robot works normally, the distance between the supporting piece 600 and the ground is kept between 0.6 mm and 5mm, and when the deformation quantity sent by the chassis 100 of the sweeping robot in the working process reaches 0.6 mm to 5mm, the bottom of the supporting piece 600 is in contact with the ground to support. The distance between the bottom of the support 600 and the ground is not suitable to be too large, and when the distance is too large, the phenomenon that part of the chassis 100 is already in contact with the ground and the support 600 is not yet in contact with the ground (when the chassis 100 is deformed greatly and the support 600 is not arranged at the deformed position) may occur, that is, the operation of the support 600 is not reliable; it is also not desirable to be too small, so that the supporting member 600 can easily contact with the ground, the supporting member 600 is easily worn, and the traveling resistance of the sweeping robot is increased.

The following describes the movable connection of the supporting member 600 to the chassis 100.

In some embodiments, the support 600 is rotatably coupled to the chassis 100. There are many ways of rotational connection, such as a roller, a rolling ball (ball), etc., and all of them can support the chassis 100 and simultaneously can be in rolling friction with the ground.

Taking a rolling ball as an example, the support 600 comprises a support rolling ball, and the chassis 100 is provided with a mounting cavity, the support rolling ball is mounted in the mounting cavity, and the support rolling ball partially protrudes out of the chassis 100. The mounting cavity is arranged on the chassis 100, and a via hole is arranged on the cavity wall of the mounting cavity facing the mounting side 170 of the chassis 100, so that part of the support rolling ball can extend out. The mounting cavity is shaped to have a spherical surface, for example, and the support rolling balls roll in the mounting cavity under the action of the chassis 100, and simultaneously play a role in supporting the chassis 100 and reducing friction between the support 600 and the ground. Of course, in some embodiments, the mounting cavity can be provided with a top cover, and the top cover can seal the mounting cavity after the supporting rolling ball is put into the mounting cavity, so as to prevent the supporting rolling ball from falling off. The arrangement of the supporting rolling balls enables the rotation direction of the sweeping robot to be flexibly changed no matter which direction the sweeping robot moves.

The support 600 includes a roller, and both ends of the roller have a rotating shaft 610, and the rotating shaft 610 is rotatably connected to the chassis 100. Generally, the rotation axis 610 of the roller is parallel to the rotation axis 610 of the driving wheel, i.e. the rolling direction of the roller is consistent with the rolling direction of the driving wheel. The connection between the roller and the chassis 100 is various, for example, two opposite supporting beams, supporting lugs, etc. may extend from the bottom of the chassis 100 to the ground, the supporting beams are all provided with shaft holes, and the rotating shaft 610 of the roller is inserted into the shaft holes.

Of course, in some embodiments, the installation side 170 of the chassis 100 may also be provided with an accommodating cavity 120, a side wall of the accommodating cavity 120 is provided with a shaft hole, the roller is installed in the accommodating cavity 120, and the rotating shaft 610 is installed in the shaft hole; a portion of the roller protrudes out of the chassis 100. The shaft hole and part of the roller are hidden, so that on one hand, the influence of external environmental factors such as dust, water, sundries and the like on the work of the roller rotating shaft 610 can be reduced as much as possible; on the other hand, the distance between the bottom of the roller and the ground can be conveniently controlled, and the positions of the shaft hole and the bottom of the chassis 100 can be set according to the diameter of the roller and the distance between the roller and the ground, which needs to be set. In this manner, it is advantageous to control the distance between the chassis 100 and the ground.

In some embodiments, in order to ensure a distance between the floor brush suction opening 110 and the ground and ensure normal and efficient operation of the floor brush suction opening 110, the chassis 100 is further provided with the floor brush suction opening 110, and the supporting members 600 are disposed at both ends of the front side of the floor brush suction opening 110. The supporting pieces 600 are arranged at the two ends of the front side of the floor brush suction port 110, so that the phenomenon that the chassis 100 at the two ends of the front side of the floor brush suction port 110 is directly contacted with the ground is avoided, the air intake of the floor brush suction port 110 is ensured, and the working efficiency of the floor brush suction port 110 is ensured. It should be noted that the sweeping robot further includes a universal wheel 150 disposed at the foremost side of the chassis 100, the universal wheel 150 and the two supporting members 600 at the front side are arranged in a triangular shape, and when the chassis 100 deforms, the universal wheel 150 and the two supporting members 600 ensure the distance between the front side of the front surface and the ground.

In the same way, in order to efficiently avoid the direct contact between the chassis 100 and the ground, the chassis 100 is further provided with a plurality of floor brush suction openings 110, and the support members 600 are arranged at the rear side of the floor brush suction openings 110 and arranged in a triangular shape. That is, the supporting members 600 arranged in a triangular shape are provided on the base pan 100 at the rear side of the floor brush suction opening 110, and the distance between the base pan 100 and the floor is ensured by using as few supporting members 600 as possible.

In order to ensure the working efficiency and the working stability of the floor brush suction port 110, a plurality of protrusions 160 are arranged on the chassis 100 at intervals in front of the floor brush suction port 110, a pressurizing groove is formed between every two adjacent protrusions 160, and the width of the pressurizing groove is 6-15 mm. By the arrangement of the protrusions 160, the protrusions 160 can ensure that the chassis 100 in front of the floor brush suction opening 110 can maintain a space from the floor even when the chassis 100 in other positions is in direct contact with the floor. Meanwhile, through the arrangement of the pressurizing groove, the air pressure entering the floor brush suction opening 110 is increased, and therefore the work efficiency and the work intensity of the floor brush suction opening 110 are improved. The width of the pressurizing groove is not too small, and is not too large, when the size of the pressurizing groove is too small, the blocked area is larger, and the total air intake of the floor brush suction opening 110 is influenced; when the size of the pressurizing groove is too large, the pressurizing effect is not good, and the large wind pressure increase is not facilitated.

In some embodiments, in order to further improve the pressurization effect, the protrusion 160 has an air guiding slope, and the distance between the air guiding slope and the chassis 100 gradually increases from the front side of the chassis 100 to the brushing suction port 110. In this embodiment, the wind guide inclined plane slope sets up for the distance between wind guide inclined plane and the ground reduces gradually, thereby makes the wind pressure increase gradually, is favorable to improving the cleaning ability of robot of sweeping the floor.

It is worth mentioning that, in some embodiments, in order to improve the working efficiency of the floor brush suction opening 110, the width of the floor brush suction opening 110 is 26-50 mm. The size of the floor brush suction port 110 is not too wide, and when the width is too large, the air inlet area is large, and the air pressure of the inlet air is reduced, so that the dirt is not easily sucked; the size of the floor brush suction port 110 should not be too small, and when it is too small, the extensible part of the rolling brush 300 is reduced, which is not beneficial to the improvement of the working efficiency of the floor sweeping robot and simultaneously is not beneficial to the entering of dirty matters.

The layout of the chassis 100 such as the direct positional relationship between the drive wheels and the floor brush suction opening 110 will be described.

A sweeping robot comprising:

the floor brush comprises a chassis 100, wherein a floor brush suction opening 110 is formed in the chassis 100;

and the driving wheel is arranged on the chassis 100 and is positioned on one side of the width direction of the floor brush suction opening 110, and two ends of the floor brush suction opening 110 extend from the middle part of the chassis 100 to two sides of the chassis 100.

Specifically, in this embodiment, the floor brush suction opening 110 may be in various forms, such as a single strip-shaped arrangement, or multiple segments, and in multiple segments, the floor brush suction opening may be arranged in a straight line, or may be arranged in a V-shape, etc. In some embodiments, in order to improve the working efficiency of the floor brush suction opening 110, the height of the front side of the floor brush suction opening 110 from the floor surface is set to be greater than the height of the rear side of the floor brush suction opening 110 from the floor surface. Therefore, dirt can enter the floor brush suction opening 110 more easily, and the work efficiency of the floor brush suction opening 110 is improved. In some embodiments, the floor brush suction opening 110 has a long bar shape, and both ends thereof extend to the edge of the base pan 100. Thus, the length of the floor brush suction opening 110 will be maximized.

Because the drive wheel is located one side of scrubbing brush suction inlet 110, the extension of scrubbing brush suction inlet 110 can not be restricted to the drive wheel for scrubbing brush suction inlet 110 can extend on chassis 100 wantonly on its extending direction, so, make scrubbing brush suction inlet 110's length can obtain extension by a wide margin, be favorable to increasing the scope of cleaning that scrubbing brush suction inlet 110 covered, be favorable to improving the cleaning efficiency of robot of sweeping the floor.

It should be noted that, in order to improve the working efficiency of the sweeping robot, the rolling brush 300 of the sweeping robot is installed in an installation cavity formed on the chassis 100, the floor brush suction port 110 is formed at an opening of the installation cavity, and the rolling brush 300 extends to two ends of the chassis 100 along the floor brush suction port 110. That is, the length of the roll brush 300 is equivalent to that of the floor brush suction opening 110, and the space of the floor brush suction opening 110 is utilized as much as possible, thereby achieving the purpose of improving the working efficiency.

Specifically, in this embodiment, the driving wheel of the sweeping robot is arranged at one side of the floor brush suction port 110, so that the floor brush suction port 110 can continue to extend along the original length direction, thereby increasing the length of the floor brush suction port 110; at the in-process of robot work of sweeping the floor, the dust enters into the robot of sweeping the floor from scrubbing brush suction inlet 110 inside, compares in the scheme that the drive wheel is located scrubbing brush suction inlet 110 both ends, and this application has increased scrubbing brush suction inlet 110's length, is favorable to scrubbing brush suction inlet 110 more comprehensive to the region of robot process of sweeping the floor clean, has the work efficiency that the robot of sweeping the floor was improved to the benefit.

In some embodiments, the drive wheel is located at a rear side of the floor brush suction opening 110 in order to further increase the work efficiency of the floor brush suction opening 110. Through setting up the drive wheel in the rear side of scrubbing brush suction opening 110, avoid the drive wheel to block the air current and enter into scrubbing brush suction opening 110, compare in setting up the drive wheel in the front side of scrubbing brush suction opening 110, increased the air inlet scope of scrubbing brush suction opening 110 by a wide margin, be favorable to the better work of scrubbing brush suction opening 110.

In some embodiments, in order to further improve the compactness of the structure, a roller brush motor 850 for driving the roller brush 300 of the sweeping robot is installed right above the chassis 100 facing away from the roller brush 300.

In this embodiment, the space behind the chassis 100 is increased by installing the rolling brush motor 850 directly above the back-to-back rolling brush 300, which is beneficial to installing the driving wheel, and the compactness of the structure is improved by adjusting the position of the rolling brush motor 850 under the condition that the space occupied by the driving wheel is fixed.

Specifically, a mounting cylinder 800 forming a mounting cavity of the roller brush 300 is protruded at the top of the chassis 100, and a roller brush motor 850 is provided on the mounting cylinder 800. The installation of the roller brush motor 850 and the installation cylinder 800 may be performed in many ways, such as by screws, fasteners, adhesives, etc. By providing the roller brush motor 850 to the top of the mounting drum 800, an area occupying the chassis 100 is freed, facilitating the mounting of the driving wheel. The driving motor of the rolling brush 300 is connected with the rolling brush 300 through a transmission mechanism, and the transmission mechanism can be a gear, a connecting rod, etc.

Compared with the prior art in which the driving wheels are arranged at both ends of the floor brush suction opening 110, the driving wheels are arranged at the rear side of the chassis 100, the positions for installing the driving wheels need to be increased on the chassis 100, and the area of the rear side of the chassis 100 is increased by arranging the rolling brush motor 850 at the top of the installation cylinder 800, which is just used for installing the driving wheels. Therefore, the space of the chassis 100 is skillfully and reasonably utilized, the compactness of the structure is improved, and the length of the floor brush suction port 110 is greatly improved.

In this embodiment, the dust cup 700 of the sweeping robot is disposed at the edge of the front side of the chassis 100. Through setting up dirt cup 700 at the edge of chassis 100 front side, be favorable to the user convenient and fast to dismantle and install dirt cup 700, be favorable to the convenient dust in the clearance dirt cup 700 of user.

In some embodiments, the dust cup 700 of the sweeping robot is made of a transparent material. By using the transparent material to manufacture the dust cup 700, the user can clearly know the accumulation condition of the dust inside without detaching the dust cup 700, which is beneficial for the user to observe the accommodation condition of the dust cup 700 and the user to clean the dust cup 700 timely.

In order to improve the working efficiency of the floor brush suction opening 110, the distance between the base plate 100 at the front side of the floor brush suction opening 110 and the bottom of the driving wheel gradually increases from the floor brush suction opening 110 to the edge of the front side of the base plate 100.

Specifically, in this embodiment, the distance between the chassis 100 in front of the floor brush suction opening 110 and the bottom of the driving wheel gradually increases from the floor brush suction opening 110 to the edge of the front side of the chassis 100, so that when the sweeping robot is placed on the floor, the distance between the chassis 100 in front of the floor brush suction opening 110 and the floor gradually increases from the floor brush suction opening 110 to the edge of the front side of the chassis 100. Therefore, the space in front of the floor brush suction opening 110 is gradually increased, and when air flows from a large space to a small space, the increase of air pressure is facilitated, so that the floor brush suction opening 110 can be used for favorably absorbing dirt on the ground better.

In some embodiments, in order to increase the volume of the dust cup 700, a side of the dust cup 700 facing the floor brush suction opening 110 extends along the length direction of the floor brush suction opening 110, and a side of the dust cup 700 facing the front side of the base pan 100 extends along the edge of the front side of the base pan 100. So set up for dirt cup 700 is the special-shaped (combination of rectangle and fan-shaped) setting, by a wide margin the volume that has increased dirt cup 700 for dirt cup 700's volume can reach the maximize, is favorable to increasing dirt cup 700's capacity, reduces the number of times that the user cleared up dirt cup 700.

In order to improve that dirty dirt enters into the dust cup 700 from the installation cavity smoothly, be formed with the installation cavity 810 that is used for installing the round brush 300 of the robot of sweeping the floor on the chassis 100, installation cavity 810 to the top protrusion on chassis 100, the side of the dust cup 700 of the robot of sweeping the floor towards the lateral wall setting of installation cavity, a dirt outlet has been seted up on the lateral wall of installation cavity, dust absorption mouth 710 has been seted up on the lateral wall of dust cup 700, dust outlet corresponds dust absorption mouth 710 sets up.

Specifically, in this embodiment, the mounting tube 800 and the dust cup 700 are disposed adjacently, and the distance between the two is less than or equal to 0.1-6 mm. A dust outlet is formed in the side wall, facing one side of the dust cup 700, of the mounting barrel 800, a dust suction port 710 is formed in the dust cup 700 and corresponds to the dust outlet of the mounting barrel 800, and the distance between the dust outlet and the dust suction port 710 is 0.1-6 mm. The distance cannot be too large, and the wind-passing efficiency is influenced; it is not too small, which is not favorable for the connection between the dust outlet and the dust suction port 710. Of course, in some embodiments, a connection structure may be provided at the dust outlet or the dust suction port 710 and extend to the other side to communicate the two. Through setting up installation section of thick bamboo 800 and dirt cup 700 parallelly, and dust absorption mouth 710 and the dust outlet adjacent arrangement are favorable to improving the efficiency that the air current enters into dirt cup 700 from the installation cavity.

In order to improve the convenience of cleaning the dust cup 700, the dust cup 700 comprises an ash cup 730 and a separator 720 arranged in the ash cup 730, wherein the separator 720 is detachably connected with the ash cup 730. The separator 720 and the dust cup 730 are detachably connected in a split manner, so that the separator 720 and the dust cup 730 are convenient to detach, install and maintain. The separator 720 is a cyclone separator 720, the airflow enters the separator 720 from the dust suction opening 710, the separator 720 comprises a housing 722 arranged in a cylindrical shape and a filter screen 721 arranged in the housing 722, and the filter screen 721 is arranged in a cylindrical shape. An air inlet cavity is formed between the filter screen 721 and the shell 722, and the dust suction opening 710 is communicated with the air inlet cavity. The air inlet cavity is communicated with the dust cup 730 through the meshes of the filter screen 721. The dust collection motor 900 is communicated with the dust cup 730, and air in the dust cup 730 is pumped away to form negative pressure in the dust cup 730 through the work of the dust collection motor 900, so that negative pressure is formed in the air inlet cavity, and negative pressure is formed in the installation cavity of the rolling brush 300. So set up, not only can be convenient for maintain, still avoided the dust to raise once more in dirt cup 700, effectually avoided the appearance of secondary ash raising phenomenon promptly.

In order to further improve the compactness of the sweeping robot structure, the electric control board of the sweeping robot is arranged at one side, deviating from the rolling brush 300, of the bottom of the installation cavity, and the electric control board extends along the length direction of the installation cavity. In this embodiment, the top of the mounting barrel 800 is very regular, which is beneficial for placing the circuit board 750. Of course, in some embodiments, the mounting posts 760 may be disposed on the top of the mounting barrel 800, and the circuit board 750 is mounted on the mounting posts 760, so that space can be fully and reasonably utilized, and space for mounting components and dissipating heat is reserved for the circuit board 750. In combination with the above embodiments, the roller brush motor 850 and the circuit board 750 both extend along the length direction of the mounting cylinder 800, the roller brush motor 850 is disposed at one end of the mounting cylinder 800, and the circuit board 750 extends from the middle of the mounting cylinder 800 to the other end with a gap therebetween, so as to dissipate heat of the roller brush motor 850 and the circuit board 750.

In some embodiments, in order to improve the accuracy of detection, a plurality of contact detection electrodes 140 are disposed on the front side of the chassis, when the contact detection electrodes 140 contact with easily spreading dirt (e.g., pet excrement, liquid, such as water, and flowable medium, such as tomato sauce, soup), the electronic control board determines whether the sweeping robot continues to work according to the detection condition, and when it is determined that the dirt is easily spreading, an alarm message is generated outwards.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A sweeping robot is characterized by comprising:

a chassis having a mounting side facing a surface to be cleaned;

a drive wheel mounted on the chassis;

the supporting piece is arranged on the installation side of the chassis, and the distance between the bottom of the supporting piece and the chassis is smaller than or equal to the distance between the bottom of the driving wheel and the chassis;

the rear side of the floor brush suction opening is provided with a scraping strip which can block airflow from entering the floor brush suction opening from the rear side of the floor brush suction opening;

the floor brush is characterized in that a plurality of protrusions are arranged on the chassis at intervals on the front side of the floor brush suction port, a pressurizing groove is formed between every two adjacent protrusions, and the width of each pressurizing groove is 6-15 mm.

2. The sweeping robot according to claim 1, wherein the distance between the bottom of the support member and the bottom of the driving wheel is 0.6-5 mm.

3. The sweeping robot of claim 1, wherein the support member includes a support post having one end connected to the chassis and another end extending away from the chassis.

4. The sweeping robot of claim 1, wherein said support member is pivotally connected to said chassis.

5. The sweeping robot of claim 4, wherein the support member comprises a support ball, and the chassis is provided with a mounting cavity, the support ball is mounted in the mounting cavity, and the support ball partially protrudes out of the chassis in a protruding manner.

6. The sweeping robot of claim 4, wherein the supporting member comprises a roller, and the roller has a rotating shaft at both ends, and the rotating shaft is rotatably connected with the chassis.

7. The sweeping robot according to claim 6, wherein an accommodating cavity is formed in the mounting side of the chassis, a shaft hole is formed in the side wall of the accommodating cavity, the roller is mounted in the accommodating cavity, and the rotating shaft is mounted in the shaft hole; the part of the roller protrudes out of the chassis.

8. The sweeping robot according to claim 1, wherein a brush suction port is further formed in the base plate, and the supporting members are disposed at both ends of the front side of the brush suction port.

9. The sweeping robot of claim 1, wherein the chassis is further provided with a plurality of floor brush suction openings, and the plurality of supporting members are arranged at the rear side of the floor brush suction openings and arranged in a triangular shape.