CN212853358U - Floor cleaning device - Google Patents

Abstract

The utility model discloses a ground cleaning device, which comprises a device body with a dust absorption opening on the bottom surface, a driving component, a driving part and a roller, wherein the driving component comprises the driving part and the roller; the blocking assembly comprises a first blocking strip positioned behind the dust suction port, the first blocking strip is an elastic structural part, and the first blocking strip is positioned between the bottom surface and the end surface of the roller, which is far away from the bottom surface; the obstacle crossing wheel is rotatably installed on at least one side of the first barrier strip, the end face of the obstacle crossing wheel, which deviates from the bottom surface, is located between the bottom surface and the end face of the first barrier strip, which deviates from the bottom surface, and the distance between the end face of the obstacle crossing wheel, which deviates from the bottom surface, and the bottom surface is larger than the thickness of the barrier strip. According to the technical scheme, the problem that when the existing sweeping robot encounters a barrier, the sweeping robot cannot continuously walk due to the fact that the barrier strip is easily obstructed by the barrier, and adverse effects are caused on normal work of the sweeping robot can be solved.

Description

Floor cleaning device

Technical Field

The utility model relates to a cleaning device technical field especially relates to a ground cleaning device.

Background

With the development of science and technology, more and more automatic devices are applied to the production and life of people. For example, the sweeping robot can provide a floor cleaning function for a user, and great convenience is brought to the user. The current robot of sweeping the floor is provided with the suction mouth usually to collect dust etc. to in the dirt box, and in order to prevent that dust from leaking away from the rear of suction mouth, set up the barrier strip usually at the rear of suction mouth, block dust with the help of the barrier strip, make as much dust as possible sucked in the suction mouth. However, in the working process of the sweeping robot, if the sweeping robot encounters obstacles such as cables or doorsills, the blocking strips are easily blocked by the cables and the doorsills, so that the sweeping robot cannot continue to walk, and the normal work of the sweeping robot is adversely affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a ground cleaning equipment to when solving the robot of sweeping the floor at present and meetting the barrier, because of the hindrance that the barrier easily receives the barrier, cause the robot of sweeping the floor to continue the walking, produce adverse effect's problem to the normal work of the robot of sweeping the floor.

In order to solve the above problem, the utility model adopts the following technical scheme:

the utility model provides a ground cleaning equipment, it includes:

the device comprises a device body, wherein a dust suction port is formed in the bottom surface of the device body;

the driving assembly comprises a driving part and a roller, the driving part is installed on the equipment body, the roller is rotatably connected with the driving part, and the roller protrudes out of the bottom surface;

the blocking assembly comprises a first blocking strip, the first blocking strip is an elastic structural part and is arranged on the equipment body, the first blocking strip is positioned between the bottom surface and the end surface of the roller deviating from the bottom surface, and the first blocking strip is positioned behind the dust suction port along the advancing direction of the ground cleaning equipment;

the obstacle crossing wheel is rotatably installed on at least one side of the first barrier strip, the obstacle crossing wheel deviates from the end face of the bottom face, the bottom face and the first barrier strip deviate from the end face of the bottom face, the obstacle crossing wheel deviates from the end face of the bottom face and the distance between the bottom faces is larger than the thickness of the barrier strip.

The utility model discloses a technical scheme can reach following beneficial effect:

in the floor cleaning equipment disclosed by the utility model, the first barrier strip is an elastic structural member, and under the condition that the first barrier strip is blocked by a barrier, the first barrier strip can increase the distance between the first barrier strip and the floor (or the barrier) in an elastic deformation mode so as to cross the barrier; simultaneously, at least one side of first blend stop is equipped with hinders the wheel more, and hinder the wheel more and deviate from between the terminal surface that equipment body bottom surface is located aforementioned bottom surface and first blend stop and deviate from aforementioned bottom surface, thereby at drive assembly work, in-process with the removal of drive cleaning device, if first blend stop can't pass through the barrier through elastic deformation's mode, take place the elastic deformation back of certain degree at first blend stop, can make and hinder wheel and barrier contact more, thereby with the help of the roll effect who hinders the wheel more, lifting equipment body, cross the barrier after crossing the barrier, deformation is resumeed to first blend stop, ground cleaning device can continue to remove, in order normal work.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

FIG. 1 is a schematic view of a floor care appliance according to an embodiment of the present invention;

FIG. 2 is a schematic view of the assembly of the barrier assembly and obstacle crossing wheel of the floor scrubbing apparatus disclosed in the embodiments of the present invention;

FIG. 3 is a schematic view of an embodiment of the present invention showing an operating condition of the floor cleaning apparatus;

fig. 4 is a schematic view of another working state of the floor cleaning device according to the embodiment of the present invention.

Description of reference numerals:

100-equipment body, 110-dust suction port,

210-a first driving roller, 220-a second driving roller, 230-a follow-up roller,

300-blocking component, 310-first barrier strip, 320-second barrier strip, 330-third barrier strip, 340-pressing block,

400-obstacle crossing wheel,

500-side brush,

600-obstacle.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in fig. 1-4, an embodiment of the present invention discloses a floor cleaning device, which comprises a device body 100, a driving group, a blocking assembly 300 and a barrier crossing wheel 400.

The floor cleaning device includes a dust suction opening 110 formed in a bottom surface of the device body 100, and collects dust on a floor into the device body 100 through the dust suction opening 110. Specifically, the device body 100 may have a circular or square structure, and the dust collection opening 110 may have a square structure, so that the communication area between the dust collection opening 110 and the outside of the device body 100 is relatively regular, and dust collection work is facilitated.

Optionally, a dust collecting box is arranged in the device body 100, dust and the like can be collected in the dust collecting box, and the dust collecting box and the device body 100 can be connected in a detachable connection mode so as to be detached when the dust in the dust collecting box is accumulated to a certain amount, so as to process the dust and the like in the dust collecting box. Of course, a suction device such as a fan is further provided in the device body 100 to collect dust on the ground, and an energy storage component such as a battery is further installed in the device body 100 to provide energy for components such as the driving assembly and the suction device.

The driving assembly includes a driving part, which may be a rotating motor, and a roller, and the driving part may be mounted on the apparatus body 100 by a screw, etc. The size and the material of gyro wheel can be confirmed according to actual demand, and optionally, the gyro wheel is made for materials such as rubber to promote the frictional force between gyro wheel and the ground, prevent the circumstances such as skid to appear in ground cleaning equipment in the course of the work. The roller is connected with the driving part in a rotating mode, and the roller protrudes out of the bottom face of the equipment body 100, so that the roller can provide a rolling supporting effect for the equipment body 100, and the roller can drive the whole ground cleaning equipment to move relative to the ground under the driving effect of the driving part.

More specifically, the number of the rollers may be at least three, and in the case where the number of the rollers is at least three, the apparatus body 100 may be stably supported to a position spaced from the ground by means of the rollers. Alternatively, the drive portion may be interconnected with at least one of the three rollers to drive the entire floor cleaning apparatus in motion. Of course, a plurality of rollers can be connected to the drive unit to ensure a relatively high level of operational reliability of the floor scrubbing apparatus.

The barrier assembly 300 includes a first barrier strip 310, and the first barrier strip 310 is an elastic structure, for example, the first barrier strip 310 may be made of rubber or the like, so that when the first barrier strip 310 is obstructed by the obstacle 600, the first barrier strip 310 may elastically deform itself to increase the distance from the ground so as to pass through the obstacle 600.

The first barrier 310 may be fixed to the apparatus body 100 by bonding or the like, and may be connected to a bottom surface of the apparatus body 100. The first barrier 310 is located between the bottom surface of the device body 100 and the end surface of the roller departing from the bottom surface, so that the first barrier 310 is prevented from contacting with the ground while providing a certain blocking effect for the dust suction opening 110, and the first barrier 310 is ensured not to obstruct the normal running of the ground cleaning device. Meanwhile, along the traveling direction of the floor cleaning device, the first barrier strip 310 is located behind the dust suction port 110, and as described above, the first barrier strip 310 extends in the direction away from the device body 100, so that the first barrier strip 310 can form a dust suction space for the dust suction port 110, prevent external air from entering the passage of the dust suction port 110, enlarge the suction effect of the air in front of and on both sides of the dust suction port 110, and improve the cleaning effect of the floor cleaning device. It should be noted that the direction of travel of the floor scrubbing apparatus can be direction a in fig. 1 and 3.

Of course, the first barrier 310 may also be mounted on the apparatus body 100 by other manners, for example, the first barrier 310 may also be mounted on the apparatus body 100 by a pressing block 340 and a screw, the pressing block 340 provides a certain pressing action for the first barrier 310, so as to improve the connection reliability of the whole first barrier 310 and the apparatus body 100, and specifically, the length and other dimensions of the pressing block 340 may be adapted to the dimensions of the first barrier 310. The pressing block 340 may be provided with a through hole through which a screw passes and is connected to the apparatus body 100, which may ensure that the first barrier 310 may be stably mounted on the apparatus body 100.

Optionally, the first barrier 310 includes a connecting portion and a blocking portion, which are connected to each other, and the blocking portion extends toward a direction in which the connecting portion deviates from the device body 100. With the above structure, the elastic deformability of the stopper can be improved to some extent. The connecting part can be fixed on the equipment main body in a bonding mode and the like, and the connecting part and the blocking part can be formed in an integrated injection molding mode, so that the connection reliability between the connecting part and the blocking part can be improved.

Alternatively, the first barrier 310 may be mounted on the apparatus body 100 through the pressing block 340 and the screw, in which case, the pressing block 340 may be pressed on a side of the connecting portion away from the apparatus body 100, and the screw passes through the pressing block 340 and the connecting portion, and by connecting the screw to the apparatus body 100, the first barrier 310 may also be fixed on the apparatus body 100. It should be noted that, in the case that the pressing block 340 is used to fix the first barrier strip 310, the end surface of the pressing block 340 facing away from the bottom surface of the device body 100 needs to be located between the bottom surface and the end surface of the first barrier strip 310 facing away from the bottom surface, that is, in the normal use process of the floor cleaning device, the pressing block 340 is higher than the first barrier strip 310, so as to ensure that the first barrier strip 310 can pass over the obstacle 600 through elastic deformation when being hindered by the obstacle 600.

The number of the obstacle crossing wheels 400 may be at least one, and at least one side of the first barrier rib 310 is provided with the obstacle crossing wheels 400, and the obstacle crossing wheels 400 may be hard wheels or elastic wheels. The end surface of the obstacle crossing wheel 400 departing from the ground of the device body 100 is located between the bottom surface and the end surface of the first barrier rib 310 departing from the bottom surface, that is, the obstacle crossing wheel 400 is suspended in the air during the normal operation of the ground cleaning device. When the first barrier strip 310 meets the obstacle 600, the first barrier strip 310 may be bent to elastically deform to increase the distance between the first barrier strip 310 and the obstacle 600, so that the first barrier strip 310 and the obstacle 600 rub against each other and pass over the obstacle 600 under the driving action of the driving assembly. And under the condition that the first barrier strip 310 is elastically deformed and cannot cross the obstacle 600, the obstacle crossing wheel 400 can be in mutual contact with the obstacle 600, so that the obstacle crossing wheel 400 can generate rolling friction with the obstacle 600, in the rotating process of the obstacle crossing wheel 400, the distance between the equipment body 100 and the ground can be increased by the obstacle crossing wheel 400, the distance between the first barrier strip 310 and the obstacle 600 is further increased, and further, under the driving action of the driving assembly, the first barrier strip 310 and the obstacle crossing wheel 400 can pass through the obstacle 600, so that the ground cleaning equipment can be ensured to continue to advance to work normally.

After the first barrier rib 310 is bent and deformed, in order to ensure that the obstacle crossing wheel 400 can contact with the obstacle 600, the distance between the end surface of the obstacle crossing wheel 400, which is away from the bottom surface of the apparatus body 100, and the bottom surface is greater than the thickness of the first barrier rib 310. Specifically, the value of the distance between the end surface of the obstacle detouring wheel 400 from the bottom surface of the apparatus body 100 and the bottom surface is a first value, and the first value is greater than the thickness value of the first barrier rib 310.

Preferably, the value of three times the thickness of the first barrier rib 310 is the second value, and the first value may be lower than the second value, so that when the first barrier rib 310 bends, even if there is a certain distance between the first barrier rib 310 and the bottom surface of the device body 100, when the above technical solution is adopted, the obstacle crossing wheel 400 can be basically ensured to contact with the obstacle 600 and cross the obstacle 600.

Specifically, the actual value of the first distance may be flexibly selected according to the size of the roller protruding from the ground of the apparatus body 100, and optionally, the first value may be 5mm, or the first value may be greater than 5 mm.

Further, the axis of the obstacle crossing wheel 400 can be located on the side of the bottom surface of the device body 100 away from the first barrier strip 310, so that the part of the obstacle crossing wheel 400 exposed out of the device body 100 is a small part of the obstacle crossing wheel 400, in this case, because the connecting line between the axis of the obstacle crossing wheel 400 and the top surface of the obstacle 600 is obliquely arranged relative to the traveling direction of the floor cleaning device, the obstacle crossing wheel 400 has a separation moving away from the ground when being obstructed, so that the obstacle crossing wheel 400 is not easy to generate a clamping stagnation condition with the obstacle 600, and the obstacle crossing capability of the floor cleaning device can be improved.

Optionally, the barrier assembly 300 further includes second barrier strips 320, the second barrier strips 320 are elastic structural members, the second barrier strips 320 are connected to both ends of the first barrier strip 310, each second barrier strip 320 extends towards one side of the first barrier strip 310 close to the dust suction opening 110, and each second barrier strip 320 is located outside the dust suction opening 110 to form a flaring structural member. Specifically, the actual size of the second barrier rib 320 may be determined according to the size of the dust suction opening 110 in the corresponding direction, and the first barrier rib 310 and the second barrier rib 320 may be formed by integral injection molding.

Under the condition of adopting above-mentioned technical scheme, second stop 320 can block to a certain extent in the gas from dust absorption mouth 110 both sides is sucked to dust absorption mouth 110 to further promote the suction effect of dust absorption mouth 110 department to the object in front of dust absorption mouth 110, and first stop 310 and second stop 320 can provide certain gathering effect for dust absorption mouth 110, make dust etc. more easily by collecting to the equipment body 100 in from dust absorption mouth 110 department.

Further, in the direction of travel of the floor scrubbing apparatus, the obstacle crossing wheel 400 may be located on a side of the second bar 320 facing away from the first bar 310. However, when the above technical solution is adopted, if the floor cleaning device encounters the obstacle 600, under the condition that the obstacle crossing wheel 400 has passed through the obstacle 600, the second barrier rib 320 has not yet reached the position of the obstacle 600, and thus elastic deformation does not occur, and under the influence of the obstacle 600, the second barrier rib 320 deforms, so that the difficulty in deformation of the second barrier rib 320 may be large, and even the second barrier rib 320 cannot pass through the obstacle 600 due to deformation, which may cause the floor cleaning device to be unable to continue to advance and normally work.

For the above reasons, it is preferable that the obstacle crossing wheel 400 is located between the end of the second barrier rib 320 facing away from the first barrier rib 310 and the first barrier rib 310, that is, the axis of the obstacle crossing wheel 400 is located behind the end of the second barrier rib 320 in the traveling direction of the floor cleaning device, in which case, once the floor cleaning device encounters the obstacle 600, the second barrier rib 320 may be brought into contact with the obstacle 600 first, and then the second barrier rib 320 is elastically deformed, and if the deformed second barrier rib 320 still cannot normally cross the obstacle 600, the obstacle crossing wheel 400 and the obstacle 600 may be brought into contact with each other.

Specifically, the obstacle crossing wheel 400 may be disposed adjacent to an end of the second blocking strip 320 facing away from the first blocking strip 310, that is, with a relatively small interval therebetween. More specifically, both the second bar 320 and the obstacle crossing wheel 400 may be mounted on the apparatus body 100, or, in the case where the floor cleaning apparatus includes the pressing block 340 as described above, the first bar 310 and the second bar 320 may be mounted through the pressing block 340, in which case the obstacle crossing wheel 400 may also be mounted on the pressing block 340.

Further, one side of one of the two second barrier bars 320 facing away from the other is provided with the obstacle crossing wheel 400, which makes the obstacle crossing ability of the whole floor cleaning device stronger and can improve the operation stability of the floor cleaning device. Specifically, the two second blocking bars 320 may be symmetrically disposed on opposite sides of the first blocking bar 310, and correspondingly, the two obstacle crossing wheels 400 may also be symmetrically disposed on one side of the two second blocking bars 320.

In order to further improve the dust suction effect of the floor cleaning device, optionally, the blocking assembly 300 further includes a third barrier 330, the third barrier 330 is connected to the device body 100, and the third barrier 330 extends in a direction away from the bottom surface, the third barrier 330 is located between the bottom surface of the device body 100 and an end surface of the first barrier 310, which faces away from the bottom surface; in the traveling direction of the floor cleaning device, the third bar 330 is located in front of the dust suction opening 110, and the third bar 330 is disposed opposite to the first bar 310.

Specifically, the third barrier 330 may also be made of a flexible material such as rubber, so that when the third barrier 330 is obstructed by the obstacle 600, the third barrier 330 can pass over the obstacle 600 by bending and deforming. Of course, in the case that the distance between the third barrier 330 and the bottom surface of the apparatus body 100 is relatively small, and in the case that the probability that the third barrier 330 is blocked by the obstacle 600 is low, the third barrier 330 may also be made of a hard material. The third barrier 330, the first barrier 310 and the two second barriers 320 can form a suction space, and since the third barrier 330 is located between the bottom surface of the device body 100 and the end surface of the first barrier 310 facing away from the bottom surface, the communication area between the suction space and the front of the dust suction opening 110 is larger, which can further improve the dust suction effect of the floor cleaning device.

More specifically, the distance between the first blocking strip 310 and the second blocking strip 320 and the floor surface can be made as small as possible, so as to further limit the air in the space on the side of the first blocking strip 310 and the second blocking strip 320 from being sucked to the dust suction opening 110, and to enable the dust suction opening 110 and the aforementioned suction space to form a vacuum environment as much as possible, thereby further improving the suction effect on the space in front of the dust suction opening 110.

Optionally, the distance between the end surface of the bottom surface of the first barrier 310 away from the device body 100 and the end surface of the roller away from the bottom surface is D2, which can make D2 be greater than 0 and less than or equal to 0.5mm, on one hand, the first barrier 310 is prevented from generating adverse effect on the traveling process of the floor cleaning device due to mutual contact with the floor, on the other hand, the vacuum degree of the suction space can be increased as much as possible, and further the cleaning effect of the floor cleaning device is improved.

Optionally, the distance between the third strip 330 and the end surface of the roller departing from the bottom surface of the device body 100 is D1, which may be 0 < D1 < 5mm, so as to ensure that the floor cleaning device has a high suction effect on the space in front of the dust suction opening 110, and at the same time ensure that the relatively large-sized blocky impurities can be collected into the device body 100.

As described above, the number of the rollers is at least three, optionally, the rollers include the first driving roller 210, the second driving roller 220 and the follower roller 230, the first driving roller 210 and the second driving roller 220 are arranged at intervals along the same straight line, so that the difficulty of motion control of the whole floor cleaning device is low, and the floor cleaning device can be ensured to have a steering function by connecting the first driving roller 210 and the second driving roller 220 with the driving parts. Of course, when the first drive roller 210 and the second drive roller 220 are connected to the same drive unit, the floor cleaning device may be provided with a rotation function by means of a differential or the like.

The following roller 230 is disposed at one side of the straight line, such that the following roller 230, the first driving roller 210 and the second driving roller 220 are distributed in a triangular shape to provide a stable supporting function for the apparatus body 100. Preferably, the follower roller 230 may be a universal wheel, which may further enhance the flexibility of the floor cleaning apparatus, thereby enhancing the user experience of the floor cleaning apparatus. Alternatively, the follower roller 230 may be disposed in front of the cleaning opening 110, or the follower roller 230 may be disposed behind the cleaning opening 110, in the direction of travel of the floor cleaning apparatus.

Further, in the traveling direction of the floor cleaning apparatus, the axis of the first driving roller 210 may be located at a side of the first barrier 310 facing away from the dust suction opening 110, that is, the first barrier 310 is located in front of the axis of the first driving roller 210, in which case, the floor contacted by the first driving roller 210 and the second driving roller 220 when rotating is the floor after being cleaned, which may prevent the first driving roller 210 and the second driving roller 220 from adhering dust and the like, and may prevent items such as hair and the like from being wound around the first driving roller 210 and the second driving roller 220 to adversely affect the normal operation of the driving assembly.

Optionally, the follower roller 230 is disposed on a side of the suction opening 110 facing away from the first bar 310 in a direction of travel of the floor cleaning device. Under the condition that the axis of the first driving roller 210 is located at the side of the first barrier strip 310 departing from the dust suction opening 110, when the structure is adopted, the situations of forward tilting and the like in the working process of the floor cleaning equipment can be prevented, so that the stability of the whole floor cleaning equipment is improved.

Optionally, the follower roller 230 is located on a straight line where the symmetry axes of the first and second driving rollers 210 and 220 are located, which can prevent the floor cleaning device from shaking or tilting during rotation and the like, and further improve the stability of the whole floor cleaning device.

In addition, the first driving roller 210, the second driving roller 220 and the follower roller 230 may be provided with elastic suspension devices, which may further improve the obstacle crossing capability of the floor cleaning device, reduce the vibration amplitude of the floor cleaning device, and improve the service life.

In order to further improve the cleaning effect of the floor cleaning device, optionally, the floor cleaning device further comprises an edge brush 500, the edge brush 500 is located in front of the dust suction opening 110 along the traveling direction of the floor cleaning device, the edge brush 500 can be rotatably mounted on the device body 100 through a rotating shaft, so that during the moving process of the floor cleaning device, dust and other impurities can be swept to the dust suction opening 110 in a rotating manner, optionally, the edge brush 500 is provided with a rotating motor, and under the driving action of the rotating motor, the cleaning effect of the edge brush 500 can be further improved.

Alternatively, the side brush 500 may be one in number, the side brush 500 may be disposed at the front left or right of the dust suction opening 110 in the traveling direction of the floor cleaning apparatus, and the side brush 500 may sweep dust into the dust suction opening 110 by setting the rotation direction of the side brush 500. Of course, the side brushes 500 may be provided at both the front left and front right of the dust suction opening 110, which may further enhance the cleaning ability of the floor cleaning apparatus.

In addition, the floor cleaning equipment can also be provided with a scraping strip, a mop cloth and the like, so that after the sweeping and dust collecting processes, deeper cleaning work can be carried out on the floor through the scraping strip and the mop cloth, and the cleaned effect of the floor is further improved.

The utility model discloses what the key description in the above embodiment is different between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, consider that the literary composition is succinct, then no longer describe here.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A floor cleaning apparatus, comprising:

the device comprises a device body (100), wherein a dust suction port (110) is formed in the bottom surface of the device body (100);

the driving assembly comprises a driving part and a roller, the driving part is installed on the equipment body (100), the roller is rotatably connected with the driving part, and the roller protrudes out of the bottom surface;

the blocking assembly (300) comprises a first blocking strip (310), the first blocking strip (310) is an elastic structural member, the first blocking strip (310) is installed on the equipment body (100), the first blocking strip (310) is located between the bottom surface and the end surface of the roller, which deviates from the bottom surface, and the first blocking strip (310) is located behind the dust suction opening (110) along the traveling direction of the floor cleaning equipment;

obstacle-surmounting wheel (400), at least one side of first blend stop (310) is rotated and is installed obstacle-surmounting wheel (400), obstacle-surmounting wheel (400) deviate from the terminal surface of bottom surface is located the bottom surface with first blend stop (310) deviates from between the terminal surface of bottom surface, just obstacle-surmounting wheel (400) deviate from the terminal surface of bottom surface with interval between the bottom surface is greater than the thickness of first blend stop (310).

2. A floor cleaning device according to claim 1, characterized in that the distance between the end surface of the obstacle crossing wheel (400) facing away from the bottom surface and the bottom surface has a first value and the value of three times the thickness of the first bar (310) has a second value, the first value being greater than the second value.

3. A floor cleaning device according to claim 1, characterized in that the axis of the obstacle crossing wheel (400) is located on the side of the bottom surface facing away from the first bar (310).

4. A floor cleaning device according to claim 1, characterized in that the barrier assembly (300) further comprises a second barrier strip (320), the second barrier strip (320) is an elastic structure, the second barrier strip (320) is connected to both ends of the first barrier strip (310), each second barrier strip (320) extends towards the side of the first barrier strip (310) close to the suction opening (110), and each second barrier strip (320) is located outside the suction opening (110) to form a flared structure.

5. A floor cleaning device according to claim 4, characterized in that the obstacle crossing wheel (400) is located between the end of the second bar (320) facing away from the first bar (310) and the first bar (310) in the direction of travel of the floor cleaning device.

6. A floor cleaning device as claimed in claim 4, characterized in that the obstacle crossing wheel (400) is provided on both sides of one of the two second bars (320) facing away from the other.

7. A floor cleaning device according to claim 1, characterized in that the blocking assembly (300) further comprises a third bar (330), the third bar (330) being connected to the device body (100) and the third bar (330) extending away from the bottom surface, the third bar (330) being located between the bottom surface and an end surface of the first bar (310) facing away from the bottom surface; along the traveling direction of the floor cleaning device, the third blocking strip (330) is positioned in front of the dust suction opening (110), and the third blocking strip (330) is arranged opposite to the first blocking strip (310).

8. A floor cleaning device as claimed in claim 7, characterized in that the third bar (330) is spaced apart from the end face of the roller facing away from the bottom surface by a distance D1, 0 < D1 ≦ 5 mm.

9. A floor cleaning device according to claim 1, characterized in that the first bar (310) comprises a connecting portion and a blocking portion which are connected to each other, the connecting portion being connected to the device body (100), the blocking portion extending towards the direction in which the connecting portion faces away from the device body (100).

10. A floor cleaning device as claimed in claim 1, characterized in that the distance between the end face of the first bar (310) facing away from the bottom side and the end face of the roller facing away from the bottom side is D2, 0 < D2 ≦ 0.5 mm.

Images