CN211633095U - Floor sweeping robot - Google Patents

Abstract

The utility model provides a robot of sweeping floor, include: a body for supporting and/or driving a plurality of support wheels of the body, the support wheels including a pair of road wheels; the main brush assembly and the side brush assembly are arranged at the bottom of the main body, and the side brush assembly is positioned in front of the travelling wheel; the main part bottom is equipped with a sunk area, limit brush subassembly includes limit brush holder and follows the outside brush hair that extends of limit brush holder, limit brush holder set up in the sunk area and can be actuated in order to drive the brush hair around a gyration axis gyration. Through setting up the depressed area with limit brush subassembly installation department to properly solve the limit brush subassembly and take place the winding problem of lines.

Description

Floor sweeping robot

Technical Field

The utility model relates to a small-size domestic appliance field, concretely relates to cleaning appliance, concretely relates to robot of sweeping floor.

Background

With the development of scientific technology and the improvement of the living standard of people, various household cleaning robots appear in the market, can autonomously navigate around the environment and execute cleaning operation, and greatly reduce the labor intensity and time of workers.

The module for realizing the sweeping function of the sweeping robot mainly comprises a main body, a support wheel, a driving wheel and a control module, wherein the main body is used for supporting each functional module, the support wheel can support the sweeping robot to be stably placed on a cleaning surface, and the sweeping robot can be driven to integrally move; the air flow path comprises an inlet, a dust collecting unit, a filtering unit, a negative pressure unit and an air outlet which are arranged or formed on the main body, air with dirt enters from the inlet, the dirt is collected in the dust collecting unit after flowing through the air flow path, the dirt is separated, and the air is cleaned and then is discharged from the air outlet. In addition, in order to assist the air flow path, a cleaning module is further provided, which includes a main brush assembly located at the inlet, and the main brush assembly is used for assisting in cleaning dirt on the traveling path of the sweeping robot into the inlet.

The perception of use is affected by the fact that the edge brush assembly often wraps around flexible threads or strips, such as hair, filaments, etc., during cleaning. The side brush assembly needs to be cleaned in time, if the side brush assembly cannot be cleaned in time, normal operation of the side brush assembly can be affected, and further the effect of single cleaning is affected, or the cleaning surface of a region to be cleaned can be cleaned for many times because the side brush assembly cannot operate well, so that excessive electric quantity is consumed, the endurance of the sweeping robot is affected, and energy waste is also caused; or the edges of some obstacles cannot be cleaned; or the driving device for driving the side brush assembly breaks down due to overload, because in some products, the side brush assembly and the main brush assembly are provided with a set of driving device, and the influence caused by winding of lines is also linked.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

Disclosure of Invention

In order to solve the problem, an object of the utility model is to provide a robot of sweeping floor to properly solve the limit brush subassembly and take place the winding problem of lines.

In order to achieve the purpose, the utility model adopts the technical proposal that:

a sweeping robot comprising: a body for supporting and/or driving a plurality of support wheels of the body, the support wheels including a pair of road wheels; the main brush assembly and the side brush assembly are arranged at the bottom of the main body, and the side brush assembly is positioned in front of the travelling wheel; the method is characterized in that: the main part bottom is equipped with a sunk area, limit brush subassembly includes limit brush holder and follows the outside brush hair that extends of limit brush holder, limit brush holder set up in the sunk area and can be actuated in order to drive the brush hair around a gyration axis gyration.

As a preferred implementation manner, the recessed region is bowl-shaped, the side brush holder is arranged at the bottom of the recessed region, one end of the bristle is connected with the side brush holder, and the other end of the bristle extends radially outwards to exceed the edge of the recessed region.

As a preferred implementation manner, the concave area is located at the edge of the bottom of the sweeper, and at least part of bristles of the bristles driven by the side brush seat to rotate around the shaft extend to the outer side of the edge of the sweeper main body.

In a preferred embodiment, at least part of the bristles of the side brush assembly engage with part of the surface of the recessed area during pivoting.

As a preferred implementation manner, the side brush assembly further comprises a flexible brush holder, one end of the flexible brush holder is connected with the side brush seat, and the other end of the flexible brush holder is connected with the brush bristles. The edge brush assembly extends to the outer side of the edge of the sweeper main body around at least part of the flexible brush handle in the pivoting process.

As a preferred implementation, at least part of the flexible handle extends in a direction that coincides with the contour of the recessed area.

Preferably, the edge brush assembly is adapted such that at least part of the flexible handle and/or bristles engage part of the surface of the recessed region during pivoting.

In a preferred implementation, when the sweeping robot is placed on a cleaning surface, the bristles will be supported by the cleaning surface such that the flexible handle and/or bristles conform to surface portions of the recessed region.

As a preferred implementation manner, one side of the flexible brush handle departing from the rotation direction of the side brush tilts towards the direction away from the surface of the groove.

As a preferred implementation mode, the concave area is provided with a notch facing the edge of the side part of the sweeper, and the flexible brush holder and/or the bristles are not in contact with the notch in the pivoting process of the side brush assembly.

As a preferred implementation, the bottom of the recessed area has a height h1, the bottom surface of the main body has a height h2, the edge of the notch has a height h3, and h1 ≧ h3 > h 2.

The above heights are all relative to the cleaning surface on which the sweeping robot is placed, where h1 is the distance between the highest point in the recessed area and the cleaning surface, h2 is the distance between the highest point of the notched portion and the cleaning surface, and h3 is flush with the height of the bottom housing of the sweeping robot.

In a preferred embodiment, the side of the pivot axis that is located above is inclined towards the outside of the main body and forms an angle with the cleaning surface.

In a preferred implementation mode, the side brush assembly rotates around a shaft to limit a side brush cleaning area;

the side brush cleaning area overlaps at least a projected portion of one of the drive wheels onto the cleaning surface.

As a preferred implementation manner, the sweeping robot is placed on a cleaning surface, the main brush assembly covers a main brush sweeping area, and the side brush partially enters or approaches the main brush sweeping area in the rotation process.

The winding of the strip of material, such as a string or hair, around the edge brush assembly is primarily caused by two aspects, the first being that one end of the strip of material is clamped or secured by some structure near the centre of rotation of the edge brush assembly; secondly, the strip-shaped objects rotate for more than one circle along with the rotary structure in the side brush assembly; along with the increase of the number of the rotation cycles, the winding force is more and more achieved, and the winding is more and more tight.

On the one hand, through forming the recessed area on the main part to set up the limit brush holder in the limit brush subassembly in the recessed area, increased the distance of the limit brush holder to the bottom surface of main part as the centre of rotation of limit brush subassembly from this, in essence, promoted the height that the limit brush holder is based on clean surface in the cleaning process, let the tip of limit brush holder and brush hair not be in same high region, the lines that from this reduce the brush hair by a wide margin and carry get rid of the probability that limit brush holder is adhered or is centre gripping at the limit brush holder. On the other hand, by providing a recessed area, the cleaning surface will exert an upward force on the bristles during cleaning, whereby in most cases a part section of the bristles will contact the surface of the recessed area, i.e. sweeping of the cleaning surface of the recessed area is performed, thereby to a certain extent preventing the line from moving along the surface of the body to the position where the edge brush holder is located.

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 structural diagram of a sweeping robot according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a sweeping robot according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a sweeping robot according to an embodiment of the present invention, in which a side brush assembly is removed from the sweeping robot.

Fig. 4 is a schematic structural diagram of a sweeping robot according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a sweeping robot according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a sweeping robot according to an embodiment of the present invention.

Fig. 7 is a schematic view illustrating a change of the brush handle after the brush hair is supported upwards when the sweeping robot is placed on a cleaning surface according to an embodiment of the present invention.

Fig. 8 is a schematic view illustrating a state of the sweeping robot with the lower brush assembly placed therein in a natural state according to an embodiment of the present invention.

Fig. 9 is a schematic view illustrating a state of the sweeping robot with the lower brush assembly placed therein in a natural state according to an embodiment of the present invention.

Fig. 10 is a schematic view of an embodiment of the present invention showing an inclined surface of a brush handle.

Fig. 11 is a schematic view illustrating an inclined arrangement of the side brush assembly and the central axis of the recessed area according to an embodiment of the present invention.

Fig. 12 is a schematic view showing a connection structure between a brush holder and an edge brush base in an edge brush assembly according to an embodiment of the present invention.

Fig. 13 is a schematic view illustrating a connection structure between a brush holder and an edge brush base of an edge brush assembly according to an embodiment of the present invention.

Fig. 14 is a schematic view showing a connection structure between the brush holder and the side brush base in the side brush assembly according to an embodiment of the present invention, in which a structure in which a smooth protrusion is provided at a position where the connecting member is installed at the top end of the side brush base is depicted.

Fig. 15 is a schematic partial sectional view of a sweeping robot according to an embodiment of the present invention, the sectional portion is, for example, the notched groove portion of the sweeping robot shown in fig. 6.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected to each other by the intermediate structure but connected to each other by the connecting structure to form a whole. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As one implementation, the sweeping robot 100 as depicted in fig. 1 includes:

a main body 110;

a plurality of support wheels 120 for supporting and/or driving the body 110, including guide wheels 1201 and road wheels 1202.

A main brush assembly 130 and an edge brush assembly 140 disposed at the bottom of the main body 110; the side brush assembly 140 is disposed in front of one of the road wheels 1202, and the main brush assembly 130 is disposed between a pair of the road wheels 1202.

Wherein, as shown in the figure, the bottom of the main body 110 is provided with a recessed region 1101, the side brush assembly 140 comprises a side brush seat 1401 and bristles 1402 extending outwards along the side brush seat 1401, and the side brush seat 1401 is arranged in the recessed region 1101 and can be actuated to drive the bristles 1402 to rotate around a rotation axis. As shown in any one of fig. 11 to 14, the side brush base is substantially a revolving body, and the revolving axis is a revolving central axis of the side brush base.

According to the scheme described in the figure, the concave area is formed in the main body, and the side brush holder in the side brush assembly is arranged in the concave area, so that the distance from the side brush holder serving as the rotation center of the side brush assembly to the bottom surface of the main body is increased, the height of the side brush holder based on a cleaning surface in the cleaning process is substantially increased, the end parts of the side brush holder and the brush bristles are not in the same height area, and the probability that lines carried by the brush bristles are thrown to the side brush holder and are adhered or clamped on the side brush holder is greatly reduced. Also, during cleaning, the cleaning surface will exert an upward force on the bristles, thereby in most cases bringing a section of the bristles into contact with the surface of the recessed area, i.e. sweeping the cleaning surface of the recessed area, thereby to some extent preventing the line from moving along the surface of the body to the position where the brush holder is located.

While FIG. 1 shows a structure in which recessed region 1101 is a groove having a substantially full circular or rounded-like profile at the bottom of main body 110, FIGS. 2 and 3 show a structure in which recessed region 2101 is not a full circular or rounded-like profile, but rather forms a groove with a gap with the edge of the main body.

And the concave area is provided with a notch facing the edge of the side part of the sweeper by combining with the attached drawing, and the flexible brush holder and/or the brush bristles are not contacted with the notch in the pivoting process of the side brush assembly.

In the structure shown in FIG. 15, the bottom of the concave region has a height h1, the bottom surface of the main body has a height h2, the edge of the notch has a height h3, and h1 ≧ h3 > h 2.

The gap has an angle range in a partial rotation region of the bristles of the side brush assembly 240, the bristles are supported upwards by the cleaning surface, and the bristles are not limited by grooves above the bristles and are suspended, so that the rotation path of the lines carried by the bristles is difficult to form a complete circle and is difficult to be brought to the side brush seat positioned at the rotation center.

In addition, fig. 1 illustrates a sweeping robot having one side brush assembly, and in some implementations, as illustrated in fig. 4, the number of the side brush assemblies 340 may be two, and correspondingly, the number of the concave regions 3101 is also two.

With reference to the structure shown in any one of fig. 11 to 14, the recessed area is bowl-shaped, and the side brush holder is disposed at the bottom of the recessed area, which can also be understood as being located at the highest position of the recessed area, so that when the sweeping robot is placed on a cleaning surface, the height difference between the side brush holder and the cleaning surface in the side brush assembly is the largest.

With reference to the structure shown in any one of fig. 1 to 2 and fig. 4 to 6, the recessed area is located at the bottom edge of the sweeper, and at least part of the bristles extend to the outer side of the edge of the sweeper body in the process of rotating around the shaft under the driving of the side brush seat. So as to clean the dirt outside the coverage range of the main body of the sweeping robot to the coverage range of the sweeping robot.

As shown in fig. 5, in some implementations, the edge brush assembly 440 also includes a flexible handle 4403, the flexible handle 4403 being connected at one end to the edge brush holder 4402 and at another end to the bristles 4401. At least part of the flexible brush handle 4403 extends to the outer side of the edge of the sweeper body in the process of pivoting the side brush assembly around the shaft. So that the bristles can be conveniently gathered into a bundle. Meanwhile, the side brush seat and the bristles at the rotation center are separated, so that the bristles are prevented from being wound on the side brush seat after falling off. And the object pressed down by the groove, especially the edge of the groove, is adjusted into a flexible brush handle, so that the friction to the bristles is reduced, the falling of the bristles is reduced, the stress on the middle section of the bristles is reduced, and the bristles are more easily in a concentrated bundle shape so as to keep the stability of the cleaning capability of the side brush assembly.

Referring to fig. 12 and 13, the flexible handle may be fixed to the side brush holder by bonding; or the brush holder is formed with a molding hole by secondary glue injection or encapsulation, and a part of the flexible brush holder is formed in the molding hole and can be reliably fixed on the brush holder, and the connecting structure is reduced, which means that the connecting structure is reduced to form a connecting gap, and the possibility that the lines are clamped on the side brush holder is reduced. Preventing twisting of the wire from another angle.

In addition, as shown in fig. 14, a smooth protrusion protruding downward relative to the connection position of the flexible brush holder and the side brush holder is formed at the middle part of the side brush holder; the smooth protrusion is formed with a coupling hole, the side brush holder is fixed to a driving device driving the side brush assembly by a coupling member passing through the coupling hole, and the coupling member is recessed with respect to a top of the smooth protrusion. The connecting structure between the output structure of the driving device and the side brush seat is provided with a protective smooth bulge, so that the possibility of clamping or adhering the strip-shaped object is further reduced.

With reference to fig. 7-9, at least a portion of the flexible handle extends in a direction that conforms to the contour of the recessed region. As mentioned above, the recessed area is in the shape of a bowl, and the surface of the recessed area may be a conical surface or a curved surface, wherein the curved surface protruding upward is more preferable, and is more favorable for preventing the lines from moving to the side brush base.

In addition, it is advantageously contemplated that at least a portion of the flexible handle and/or bristles will engage a portion of the surface of the recessed area during pivoting of the edge brush assembly about the axis.

As an alternative, the bristles will be supported by the surface to be cleaned when the sweeping robot is placed on the surface, as shown in figure 7, where the arrows indicate the direction of the support force, so that the flexible handle and/or bristles engage the surface portions of the recessed area. In this way, the surface of the recessed area is positively cleaned, carrying the strands away from the surface of the recessed area and also from other dirt which is thrown away by the centrifugal force of rotation and is mostly carried to the cleaning area of the main brush assembly.

In connection with fig. 10, as a further preferred realisation, the side of the flexible brush handle 6403 facing away from the direction of rotation of the edge brush, indicated by the arrow in the figure, is tilted away from the surface of the recessed area. I.e. having an inclined surface, the dirt, especially the lines, on the surface of the recessed area is advantageously scooped up by the inclined surface of the flexible handle during the rotation and a space is formed so that the lines cannot pass between the handle and the recessed area. This arrangement is advantageous in that it makes it difficult for the threads already attached or fixed to the side brush holders to make one revolution, and eventually they are likely to be thrown off again by centrifugal force, or at least to form a twist.

In some implementations, as shown in fig. 12, in conjunction with the various structures described above, the side on which the axis of rotation is disposed is inclined toward the outside of the main body, in that the axis of rotation is disposed at an angle of less than 90 ° to the cleaning surface; a preferred angle is for example in the range 89 to 45 deg., which inclination will cause a height difference between the bristles on different sides, advantageously avoiding that a longer line is simultaneously held by two bundles of bristles to be twisted around the bristles.

In addition, as an advantageous design, the sweeping robot is placed on a cleaning surface and the brushing assembly rotates around the shaft to limit brushing a sweeping area; the side brush cleaning area is overlapped with at least one projection part of the driving wheel on the cleaning surface.

For example by passing a tangent line to either one of the drive wheels in the cleaning surface, parallel to the radial direction of the drive wheel, through the edge brush cleaning zone. Therefore, by limiting the position relation between the driving wheel and the side brush, the cleaning of the driving wheel body and the area range to which the front of the driving wheel is going to travel can be realized. The driving wheel is also of a rotary structure, and the possibility of winding of the lines is also generated, so that the possibility of winding of the lines of the sweeping robot is further reduced.

In addition, the sweeping robot is placed on a cleaning surface, the main brush assembly covers a main brush sweeping area, and part of the side brush enters or approaches the main brush sweeping area in the rotating process. The main brush area sucks dirt into the air flow path through the suction force of cleaning and negative pressure through the connection of the two areas.

Claims (10)

1. A sweeping robot comprising: a body for supporting and/or driving a plurality of support wheels of the body, the support wheels including a pair of road wheels; the main brush assembly and the side brush assembly are arranged at the bottom of the main body, and the side brush assembly is positioned in front of the travelling wheel; the method is characterized in that: the main part bottom is equipped with a sunk area, limit brush subassembly includes limit brush holder and follows the outside brush hair that extends of limit brush holder, limit brush holder set up in the sunk area and can be actuated in order to drive the brush hair around a gyration axis gyration.

2. The sweeping robot of claim 1, wherein: the depressed area is the bowl form, limit brush holder be set up in the bottom in depressed area, brush hair one end links to each other with limit brush holder, and the other end is radial epitaxial extension and surpasss the edge of depressed area.

3. A sweeping robot according to claim 1 or 2, characterized in that: the concave area is located at the edge of the bottom of the sweeper, and at least part of bristles extend to the outer side of the edge of the sweeper main body in the process of pivoting under the driving of the side brush seat.

4. A sweeping robot according to claim 3, wherein: and at least part of bristles of the side brush assembly are attached to part of the surface of the concave area in the process of rotating around the shaft.

5. A sweeping robot according to claim 1 or 2, characterized in that: the side brush assembly also comprises a flexible brush handle, one end of the flexible brush handle is connected with the side brush seat, and the other end of the flexible brush handle is connected with the brush hair; the edge brush assembly extends to the outer side of the edge of the sweeper main body around at least part of the flexible brush handle in the pivoting process.

6. The sweeping robot of claim 5, wherein: the side brush assembly is attached to a portion of the surface of the recessed area by at least a portion of the flexible handle and/or bristles during pivoting.

7. The sweeping robot of claim 5, wherein: the concave area is provided with a notch facing the edge of the side part of the sweeper, and the flexible brush holder and/or the brush bristles are not in contact with the notch in the process of pivoting the side brush assembly around the shaft.

8. The sweeping robot of claim 7, wherein: the bottom of the concave area is provided with a height h1, the bottom surface of the main body is provided with a height h2, the edge of the notch is provided with a height h3, and h1 is more than or equal to h3 and more than h 2.

9. The sweeping robot of claim 1, wherein: the side brush assembly rotates around a shaft to limit a side brush cleaning area;

the side brush cleaning area overlaps at least a projected portion of one of the drive wheels onto the cleaning surface.

10. The sweeping robot of claim 1, wherein: the main brush assembly covers a main brush cleaning area, and the side brush partially enters or approaches the main brush cleaning area in the rotating process.

Images