CN214156505U - Cleaning brush and cleaning device - Google Patents

Abstract

The utility model relates to a cleaning brush and cleaning device relates to cleaning machine technical field. The cleaning brush comprises a brush disc and a plurality of brush hairs; the brush disc is provided with a liquid outlet area, a plurality of bristles are arranged at intervals along the circumferential direction of the liquid outlet area to form a bristle area which is arranged in a closed ring shape, the bristle area is provided with a plurality of hairless parts which are arranged at intervals around the axis of the liquid outlet area, and the size of the hairless parts along the radial direction of the liquid outlet area is smaller than that of the bristle area along the radial direction of the liquid outlet area; the cleaning device comprises the cleaning brush. The utility model relates to a cleaning brush and cleaning device not only improves the utilization ratio to the cleaning solution through the clearance dynamics that improves ground moreover to improve clean effect.

Description

Cleaning brush and cleaning device

Technical Field

The utility model relates to a cleaning machines technical field especially relates to cleaning brush and cleaning device.

Background

The cleaning robot can be used for automatically cleaning the ground, and the application scene can be household indoor cleaning, large-scale place cleaning and the like. The cleaning robot is of a sweeping robot or a mopping robot. The cleaning robot is provided with a cleaning member and a driving mechanism. Under the driving of the driving mechanism, the cleaning robot moves automatically according to a preset cleaning path, and cleans the ground through the cleaning member. For the cleaning robot, the cleaning piece is a cleaning brush, and in the cleaning process, the cleaning brush can act on the ground and is matched with the liquid feeding mechanism and the dust suction mechanism to clean the ground. Therefore, for the cleaning robot, the quality of the cleaning brush is one of the important factors affecting the cleaning effect. When the existing cleaning brush is used for cleaning, the cleaning pressure is too low, the cleaning is inconvenient to thoroughly clean, and the cleaning liquid cannot be fully utilized when the cleaning brush is combined with a liquid feeding mechanism.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a cleaning brush for solving the technical problems of incomplete cleaning and insufficient utilization of cleaning solution in the prior art.

A cleaning brush comprises a brush disc and a plurality of brush hairs;

the brush dish has a liquid zone, and is a plurality of the brush hair is followed the circumference interval arrangement in liquid zone forms and is the bristle field that seals the annular setting, the bristle field sets up a plurality ofly around the no hair portion of the axis interval arrangement in liquid zone, just no hair portion is followed the radial size in liquid zone is less than the bristle field is followed the radial size in liquid zone.

In one embodiment, the bristle field comprises a plurality of brush ring loops, and the diameters of the plurality of brush ring loops are gradually increased from the liquid outlet area to the edge of the brush disc.

In one embodiment, at least one circle of the brush hair ring is arranged on one side of the hairless part facing the liquid outlet area, and at least one circle of the brush hair ring is arranged on one side of the hairless part facing the edge of the brush disc.

In one embodiment, the radial dimension of the bristles close to the liquid outlet area is smaller than that of the bristles close to the edge of the brush disc;

and/or the length of the bristles close to the liquid outlet area is smaller than that of the bristles close to the edge of the brush disc;

and/or the hardness of the bristles close to the liquid outlet area is lower than that of the bristles close to the edge of the brush disc.

In one embodiment, the radial size of the bristles gradually decreases from the edge of the brush disc to the liquid outlet area;

and/or the lengths of the bristles are gradually reduced from the edge of the brush disc to the liquid outlet area;

and/or the hardness of the bristles is gradually reduced from the edge of the brush disc to the liquid outlet area.

In one embodiment, the bristles are circular in cross-section.

In one embodiment, the axis of the liquid outlet area coincides with the axis of the brush disc.

In one embodiment, the liquid outlet area comprises a plurality of liquid outlets which are arranged at intervals around the axis of the brush disc.

In one embodiment, the brush disc is provided with a mounting hole, and the liquid outlets are arranged on the peripheral side of the mounting hole at intervals.

The utility model also provides a cleaning device can solve above-mentioned at least one technical problem.

A cleaning device comprises the cleaning brush.

The utility model has the advantages that:

the utility model provides a pair of cleaning brush, including brush dish and a plurality of brush hair. Wherein, the brush dish has a liquid zone, and a plurality of brush hairs are arranged along the circumference interval in liquid zone to make the week side that reachs the liquid zone form the brush hair area that is the setting of closed ring shape, the brush hair area is provided with a plurality of no hair portions of arranging around the axis interval in liquid zone, and no hair portion is less than the radial size in liquid zone along the brush hair area along the radial size in liquid zone. Such setting for in one side that no hair portion is close to out the liquid district and no hair portion is close to brush dish edge, at least one side has the brush hair, thereby when going out the liquid district and providing the cleaning solution for the brush dish, no hair portion can be fully contacted with the cleaning solution along going out the radial brush hair in liquid district, thereby makes the cleaning solution can not throw away because of the relative cleaning brush of the existence of no hair portion, improves the utilization ratio to the cleaning solution. Simultaneously, the setting of no hair portion in brush hair district and the brush hair district can reduce the area of contact of ground and brush hair to when cleaning brush applys equal pressure to ground, this cleaning brush can improve the pressure that acts on ground, and then improves the clearance dynamics to the ground attachment, so that more thorough cleanness.

The utility model also provides a cleaning device, including above-mentioned cleaning brush to more thorough clearing up ground, improve the utilization ratio to the cleaning solution simultaneously.

Drawings

Fig. 1 is a schematic view of a cleaning brush provided in an embodiment of the present invention;

fig. 2 is a first bottom view of a cleaning brush according to an embodiment of the present invention;

fig. 3 is a second bottom view of the cleaning brush provided by the embodiment of the present invention;

fig. 4 is a third bottom view of the cleaning brush provided in the embodiment of the present invention;

fig. 5 is a fourth bottom view of the cleaning brush according to the embodiment of the present invention.

Reference numbers: 10-a cleaning brush; 11-brushing the disc; 12-bristles; 13-a liquid outlet zone; 14-a bristle field; 15-mounting holes; 131-a liquid outlet; 141-hairless parts; 142-brushing the loop.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship 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.

Furthermore, the terms "first", "second" and "first" are used 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. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

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; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

An embodiment of the utility model provides a cleaning device, including the cleaning brush. Simultaneously, this cleaning device still includes cleaning mechanism, and the cleaning brush is installed in one side on cleaning mechanism orientation ground, and cleaning mechanism can move ground relatively, and cleaning brush brushes along with cleaning mechanism synchronous motion, scrubs ground through the cleaning brush, realizes the cleaning work on ground.

However, in the actual cleaning process, there is still a problem that the cleaning is not thorough enough, and in the cleaning process, for example, when the cleaning liquid is needed, the cleaning brush cannot sufficiently use the supplied cleaning liquid, thereby causing a part of the cleaning liquid to be wasted. To this end, an embodiment of the present invention further provides a cleaning brush, which can ensure thorough cleaning and make full use of cleaning solution. The specific structure of the cleaning brush will be described in detail below.

Referring to fig. 1-5, fig. 1 is a schematic view of a cleaning brush according to an embodiment of the present invention; fig. 2 illustrates a first bottom view of a cleaning brush according to an embodiment of the present invention; fig. 3 illustrates a second bottom view of the cleaning brush according to an embodiment of the present invention; fig. 4 is a third bottom view of a cleaning brush according to an embodiment of the present invention; fig. 5 is a fourth bottom view of the cleaning brush according to an embodiment of the present invention. The utility model provides a cleaning brush 10, including brush dish 11 and a plurality of brush hair 12, brush dish 11 has out liquid district 13, and a plurality of brush hairs 12 form the brush hair district 14 that is the setting of closed ring shape along the circumference interval arrangement who goes out liquid district 13, and brush hair district 14 sets up a plurality of no hair portions 141 around the axis interval arrangement who goes out liquid district 13, and no hair portion 141 is less than brush hair portion 14 along the radial size that goes out liquid district 13.

Specifically, the liquid outlet area 13 is disposed on a side of the brush tray 11 facing the ground, and the liquid outlet area 13 can be connected to a liquid supply mechanism in the cleaning device, so that the cleaning liquid supplied by the liquid supply mechanism can flow to the ground through the liquid outlet area 13. A plurality of brush hairs 12 set up along the circumference of going out liquid district 13 to make the periphery side formation that goes out liquid district 13 be the bristle field 14 that seals the annular setting, when the cleaning solution that provides for liquid mechanism passes through the output of liquid district 13, can fully contact with the bristle field 14 that goes out liquid district 13 week side, so that bristle field 14 cleans ground under the auxiliary action of cleaning solution. The bristle field 14 is provided with a plurality of bristle-free portions 141 arranged at intervals around the axis of the liquid outlet region 13, i.e. in the ring shape of the bristle field 14 in the form of a closed ring, there are a plurality of blank regions which are not provided with bristles 12, so that the above-mentioned bristle-free portions 141 are formed. The provision of the bristle-free portion 141 can reduce the contact area of the bristle field 14 with the ground. According to the formula P/S, when the contact area is reduced and the cleaning brush 10 applies the same pressure to the floor, the pressure of the cleaning brush 10 acting on the floor is increased, so as to improve the cleaning force of the floor attachments, and to clean the floor more thoroughly.

Meanwhile, the size of the bristle-free portion 141 in the radial direction of the liquid outlet area 13 is smaller than the size of the bristle field 14 in the radial direction of the liquid outlet area 13. That is, assuming that the liquid outlet area 13 is circular, the bristle area 14 is a ring disposed around the liquid outlet area 13. At this time, the radial direction of the liquid outlet area 13 is the radius of the circle, and the length of the bristle area 14 in the radial direction of the liquid outlet area 13 is the width of the ring. The length of the bristle free region in the radial direction is smaller than the length of the bristle field 14 in the radial direction, i.e. the bristle free region is arranged in a ring shape. Such setting can make in the one side that no hair portion 141 is close to liquid outlet area 13 and the one side that no hair portion 141 is close to the brush dish 11 edge, has at least one side to distribute and has brush hair 12 to when the cleaning solution is exported from liquid outlet area 13, no hair portion 141 also has brush hair 12 along the radial direction in liquid outlet area 13 and can fully contact with the cleaning solution, thereby makes the cleaning solution can not throw away because of no hair portion 141's existence and relative cleaning brush 10, thereby improves the utilization ratio to the cleaning solution.

It should be noted that the bristle field 14 is provided with the bristle-free portion 141, so that a blank area without bristles 12 is formed in the bristle field 14, in which area the cleaning liquid is not in contact with the cleaning liquid, so that the cleaning liquid is easily discharged with bubbles, and it is ensured that the cleaning liquid does not remain in the bristle-free area, so that the cleaning liquid can be sufficiently in contact with the bristles 12 of the bristle field 14.

With continued reference to fig. 2-5, the number of the hairless zones may be three, and the three hairless zones are spaced 120 degrees apart. Or, the number of the hairless areas is five, and the five hairless areas are uniformly distributed at intervals around the axis of the liquid outlet area 13. Or the number of the hairless areas is six, and the six hairless areas are uniformly distributed at intervals around the axis of the liquid outlet area 13. Or the number of the hairless areas is eight, and the eight material areas are uniformly distributed at intervals around the axis of the liquid outlet area 13.

When the number of the hairless areas is multiple, the structural shapes of any two adjacent hairless areas can be the same or different. For example, the hairless area may be a quadrangle or a triangle. In any arrangement, the pressure of the cleaning brush 10 acting on the floor surface may be increased.

It should be added that the plurality of hairless regions may be uniformly spaced around the axis of the liquid outlet region 13, or may be unevenly spaced around the axis of the liquid outlet region 13, as long as the above-mentioned effect of the hairless portion 141 can be achieved.

With continued reference to fig. 1-5, in some embodiments, the bristle field 14 includes a plurality of brush loop loops 142, and the diameter of the plurality of brush loop 142 gradually increases from the liquid outlet region 13 toward the edge of the brush tray 11. That is, the plurality of bristles 12 can be arranged in an annular array on the outer peripheral side of the liquid outlet area 13, each of which is one brush loop 142, thereby forming a plurality of arrangement patterns in which the diameter of the brush loop 142 gradually increases from the liquid outlet area 13 toward the edge of the brush tray 11. The bristles 12 between any two adjacent brush ring loops 142 may be staggered, for example, one of the brush ring loops 142 is a first loop, the adjacent brush ring loop 142 is a second loop, and the two bristles 12 in the first loop correspond to one bristle 12 in the second loop, and are spaced in this way.

With continued reference to fig. 1-5, in some embodiments, at least one circle of brush loop 142 is disposed on a side of the bristle-free portion 141 facing the liquid outlet area 13, and at least one circle of brush loop 142 is disposed on a side of the bristle-free portion 141 facing the edge of the brush tray 11. That is, in the present embodiment, the side of the bristle-free portion 141 facing the liquid discharge region 13 has the bristles 12, and the side of the bristle-free portion 141 facing the edge of the brush disk 11 also has the bristles 12, so that the bristle-free portion 141 forms a blank central region in the bristle region 14 without the bristles 12. Due to the arrangement, the cleaning liquid can be contacted with the bristles 12 after being output from the liquid area 13, so that the cleaning liquid can beat foam under the action of the bristles 12 to act on the ground. Simultaneously, make the no hair district can have the effect of absorption (shrink) to the cleaning solution at brush hair 12 towards one side at brush dish 11 edge, reduce the risk that the cleaning solution directly is thrown away at cleaning brush 10 during operation, improve the utilization ratio to the cleaning solution.

With reference to fig. 1-5, in actual use, a circle of brush ring 142 may be disposed on the side of the bristle-free portion 141 facing the liquid outlet region 13, and a circle of brush ring 142 may be disposed on the side of the bristle-free portion 141 facing the edge of the brush plate 11; alternatively, two circles of brush loop loops 142 are arranged on the side of the hairless part 141 facing the liquid outlet area 13, and two circles of brush loop loops 142 are arranged on the side of the hairless part 141 facing the edge of the brush plate 11; or, one circle of brush hair ring 142 is arranged on one side of the hairless part 141 facing the liquid outlet area 13, and two circles of brush hair ring 142 are arranged on one side of the hairless part 141 facing the edge of the brush disc 11; alternatively, two brush loop loops 142 are provided on the side of the bristle-free portion 141 facing the liquid discharge region 13, and one brush loop 142 is provided on the side of the bristle-free portion 141 facing the edge of the brush disk 11. Of course, the number of the bristle rings 142 may be three or four, and in any arrangement, the cleaning liquid is not thoroughly thrown out.

In some embodiments, of the bristles 12, the radial dimension of the bristles 12 near the liquid outlet region 13 is smaller than the radial dimension of the bristles 12 near the edge of the brush plate 11; of the bristles 12, the length of the bristles 12 close to the liquid outlet area 13 is smaller than that of the bristles 12 close to the edge of the brush disc 11; of the bristles 12, the bristles 12 near the liquid outlet region 13 have a hardness less than the bristles 12 near the edge of the brush plate 11.

That is, among the plurality of bristles 12, the bristles 12 near the liquid discharge region 13 are more rigid than the bristles 12 far from the liquid discharge region 13, in terms of both the cross-sectional dimension and the length dimension of the bristles 12 themselves and the stiffness of the bristles 12 themselves. Such an arrangement can, on the one hand, accommodate the pressure exerted by the cleaning brush 10 on the liquid outlet area 13, i.e. because the liquid outlet area 13 is arranged to ensure that the liquid outlet area 13 is not damaged by pressure, the pressure exerted by the cleaning brush 10 on the liquid outlet area 13 will be relatively low, and the stiffness of the bristles 12 adjacent to the liquid outlet area 13 can be relatively low. On the other hand, the liquid outlet area 13 is located in the middle of the brush disc 11 and is not located at the cleaning dead angle, so that the bristles 12 close to the liquid outlet area 13 can be relatively simplified, and the manufacturing cost is reduced.

Of course, the bristles 12 close to the liquid discharge region 13 may have only a radial dimension smaller than that of the bristles far from the liquid discharge region 13, or the bristles 12 close to the liquid discharge region 13 may have only a length smaller than that of the bristles far from the liquid discharge region 13.

In some embodiments, the radial dimension of the bristles 12 decreases gradually from the edge of the brush disc 11 towards the liquid outlet zone 13; from the edge of the brush disc 11 towards the liquid outlet area 13, the length of the bristles 12 gradually decreases; the stiffness of the bristles 12 decreases from the edge of the brush disc 11 towards the liquid outlet zone 13.

That is, in the present embodiment, the size of the brush staples 12 is gradually reduced from the side far from the liquid discharge area 13 to the side near the liquid discharge area 13. Meanwhile, the hardness of the bristles 12 is gradually reduced from the side far away from the liquid outlet area 13 to the side close to the liquid outlet area 13, so that the bristle area 14 forms a concave curved surface around the liquid outlet area 13. Of course, such an arrangement also enables a reduction in manufacturing costs while ensuring thorough cleaning.

With continued reference to fig. 1-5, in some embodiments, the bristles 12 are circular in cross-section. That is, the bristles 12 are cylindrical in structure. Of course, not only the bristles 12 are limited to be cylindrical structures, but also the cross sections of the bristles 12 can be quadrangular or triangular, and no matter which arrangement mode is adopted, the cleaning brush can be used for thoroughly cleaning the ground as long as the bristles 12 and the cleaning liquid act together.

With continued reference to fig. 1-5, in some embodiments, the axis of the liquid outlet area 13 coincides with the axis of the brush plate 11. That is, in the present embodiment, the liquid outlet area 13 is disposed at the middle of the brush tray 11. When the brush disc 11 is a circular disc, the liquid outlet area 13 is located at the center of the brush disc 11, and the bristle area 14 is a circular ring structure arranged around the circumference of the liquid outlet area 13.

With continued reference to fig. 1-5, in practical use, the liquid outlet area 13 includes a plurality of liquid outlets 131, and the plurality of liquid outlets 131 are spaced around the axis of the brush plate 11. In particular, the outlet area 13 is provided, which means that a region for discharging the cleaning liquid is provided in the middle of the brush plate 11, in order to facilitate the interaction of the bristle field 14 with the cleaning liquid. The liquid outlet area 13 comprises a plurality of liquid outlets 131, the plurality of liquid outlets 131 are uniformly distributed at intervals around the axis of the brush disc 11, and each liquid outlet 131 is communicated with a liquid outlet channel of the cleaning mechanism so as to facilitate the conveying of the cleaning liquid. Wherein, the arrangement of the liquid outlets 131 can increase the number of the liquid outlets 131 as much as possible when the brush tray 11 is ensured to have good structural strength as a whole, so as to increase the flow rate of the output cleaning liquid. Meanwhile, the liquid outlet 131 may be arranged in a horn shape, a large end of the horn shape faces the ground, and a small end of the horn shape faces the liquid outlet channel. Alternatively, the liquid outlet 131 may be provided with a double-trumpet shape, that is, the small ends of two trumpets are butted, the large end of one trumpet is communicated with the liquid outlet channel, and the large end of the other trumpet faces the ground.

Wherein, a reinforcing rib can be arranged between any two adjacent liquid outlets 131, and the structural strength of the brush disc 11 can be increased through the arrangement of the reinforcing rib, so as to apply pressure to the ground.

It should be noted that, the number of the liquid outlets 131 may also be one, and one liquid outlet 131 is located in the middle of the brush tray 11, or is disposed at an interval with a portion for connecting the brush tray 11 to the rotating shaft. As long as the delivery of the cleaning liquid can be achieved.

With continued reference to fig. 1-5, in some embodiments, the brush plate 11 has a mounting hole 15, and the plurality of liquid outlets 131 are spaced around the mounting hole 15.

Specifically, the mounting holes 15 are disposed in the middle of the plurality of liquid outlets 131 in an annular array, and the mounting holes 15 are disposed to connect a rotating shaft for driving the cleaning brush 10 to rotate. The rotating shaft is connected with the hole wall of the mounting hole 15 through a key, so that the brush disc 11 can rotate synchronously with the rotating shaft. Wherein, the edge of the mounting hole 15 is provided with a baffle plate which is a curved surface, and the baffle plate is sunken towards one side close to the ground.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A cleaning brush, characterized by comprising a brush plate (11) and a plurality of bristles (12);

the brush disc (11) is provided with a liquid outlet area (13), the bristles (12) are arranged at intervals in the circumferential direction of the liquid outlet area (13) to form a bristle area (14) which is arranged in a closed ring shape, the bristle area (14) is provided with a plurality of hairless parts (141) which are arranged at intervals around the axis of the liquid outlet area (13), and the radial size of the hairless parts (141) along the liquid outlet area (13) is smaller than that of the bristle area (14) along the radial direction of the liquid outlet area (13).

2. The cleaning brush according to claim 1, wherein the bristle field (14) comprises a plurality of brush loops (142), and the plurality of brush loops (142) have a diameter that gradually increases from the liquid outlet region (13) in a direction towards the edge of the brush disc (11).

3. The cleaning brush according to claim 2, characterized in that the side of the bristle-free portion (141) facing the liquid outlet area (13) is provided with at least one turn of the brush loop loops (142), and the side of the bristle-free portion (141) facing the edge of the brush plate (11) is provided with at least one turn of the brush loop loops (142).

4. A cleaning brush according to claim 1, characterized in that of the bristles (12), the bristles (12) near the liquid outlet zone (13) have a smaller radial dimension than the bristles (12) near the edge of the brush disc (11);

and/or the length of the bristles (12) close to the liquid outlet area (13) in the bristles (12) is smaller than that of the bristles (12) close to the edge of the brush disc (11);

and/or the hardness of the bristles (12) close to the liquid outlet area (13) in the bristles (12) is lower than that of the bristles (12) close to the edge of the brush disc (11).

5. A cleaning brush according to claim 1, characterized in that the radial dimension of the bristles (12) decreases from the edge of the brush disc (11) towards the liquid outlet zone (13);

and/or the length of the brush hair (12) is gradually reduced from the edge of the brush disc (11) to the liquid outlet area (13);

and/or the hardness of the bristles (12) is gradually reduced from the edge of the brush disc (11) to the liquid outlet area (13).

6. A cleaning brush as claimed in claim 1, characterized in that the bristles (12) are circular in cross-section.

7. A cleaning brush as claimed in claim 1, characterized in that the axis of the liquid outlet zone (13) coincides with the axis of the brush disc (11).

8. The cleaning brush according to any of claims 1-7, wherein the liquid outlet area (13) comprises a plurality of liquid outlets (131), the plurality of liquid outlets (131) being arranged at intervals around the axis of the brush disc (11).

9. The cleaning brush according to claim 8, wherein the brush disk (11) has a mounting hole (15), and the plurality of liquid outlets (131) are arranged at intervals on a peripheral side of the mounting hole (15).

10. A cleaning device comprising the cleaning brush according to any one of claims 1 to 9.

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