CN215078007U - Round brush and cleaning device - Google Patents

Abstract

The utility model discloses a rolling brush and cleaning equipment, the rolling brush comprises a rolling brush cylinder, a cleaning brush, a screw rod, a scraper and a limit structure, wherein the rolling brush cylinder is hollow and provided with a holding cavity, and the rolling brush cylinder is provided with a guide groove communicated with the holding cavity; the cleaning brush is arranged on the periphery of the rolling brush cylinder; the screw rod is rotatably arranged in the accommodating cavity; one end of the scraper is in threaded connection with the screw rod, and the other end of the scraper extends out of the guide groove; the limiting structure is used for limiting the rotation of the screw rod when the rolling brush cylinder rotates in a first steering direction so that the scraper can move along the guide groove, and releasing the limitation on the rotation of the screw rod when the rolling brush cylinder rotates in a second steering direction opposite to the first steering direction so that the scraper can be kept still in the guide groove. The technical proposal of the utility model has the advantages of self-cleaning hair and long service life.

Description

Round brush and cleaning device

Technical Field

The utility model relates to an environmental cleaning technical field, in particular to round brush and cleaning equipment.

Background

The existing cleaning equipment, such as a sweeping robot or a dust collector, is generally provided with a rolling brush, and when cleaning, garbage, dust and the like on the ground can be gathered together through the rolling brush so as to be conveniently sucked by a dust suction device.

However, the roller brush of the existing sweeping robot or the existing dust collector is easily wound by hair, so that the rotating speed of the roller brush is reduced, and the cleaning efficiency of the sweeping robot or the existing dust collector is further influenced.

An exemplary technology provides a rolling brush, which includes a rolling brush cylinder, a screw rod and a scraper, wherein the rolling brush cylinder is arranged in a hollow manner, the screw rod is arranged on the rolling brush cylinder, the scraper is connected to the screw rod in a threaded manner and extends out from a guide groove on the rolling brush cylinder, and the screw rod can be kept static when the rolling brush cylinder rotates, so that the scraper can move along the guide groove to cut hairs on the rolling brush cylinder, and the hairs are cleaned.

However, in the process of rotation of the rolling brush, the scraper always moves back and forth along the guide groove, so that abrasion between the scraper and the screw rod is serious, and the service life of the rolling brush is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a round brush, when aiming at realizing the hair self-cleaning on the round brush, prolong the life of round brush.

In order to achieve the purpose, the rolling brush provided by the utility model comprises a rolling brush cylinder, a cleaning brush, a screw rod, a scraper and a limit structure, wherein,

the rolling brush cylinder is hollow and provided with an accommodating cavity, and a guide groove communicated with the accommodating cavity is formed in the rolling brush cylinder;

the cleaning brush is arranged on the periphery of the rolling brush barrel;

the screw rod is rotatably arranged in the accommodating cavity;

one end of the scraper is in threaded connection with the screw rod, and the other end of the scraper extends out of the guide groove;

the limiting structure is used for limiting the rotation of the screw rod when the rolling brush cylinder rotates in a first rotating direction so as to enable the scraper to move along the guide groove, and releasing the limitation on the rotation of the screw rod when the rolling brush cylinder rotates in a second rotating direction opposite to the first rotating direction so as to enable the scraper to keep still in the guide groove.

In one embodiment, when the rolling brush cylinder rotates and the screw rod keeps static, the scraper moves back and forth along the guide groove.

In one embodiment, the rolling brush further comprises a first mounting cap rotatably connected to one end of the rolling brush cylinder, and the first mounting cap is used for being fixedly connected with a cleaning device;

the limiting structure is arranged between the first mounting cap and the screw rod.

In one embodiment, the limiting structure comprises a first pawl, a first elastic element and a first step, wherein,

the first pawl is movably connected to the screw rod;

the first elastic piece is arranged between the first pawl and the screw rod and can drive the first pawl to move towards the direction far away from the screw rod;

the first step is formed on the first mounting cap;

when the rolling brush drum rotates in a first steering direction, the first pawl can be abutted against the first step under the action of the elastic force of the first elastic piece so as to limit the rotation of the screw rod;

the first pawl may ride over the first step when the roller brush drum rotates in the second rotational direction.

In one embodiment, one end of the first pawl is rotatably connected to the screw rod, and the other end of the first pawl has a tendency to swing away from the screw rod under the action of the first elastic member.

In an embodiment, the rolling brush further comprises a transmission structure, the transmission structure is arranged between the screw rod and the rolling brush barrel, and the transmission structure is used for driving the screw rod to rotate around a second steering direction when the rolling brush barrel rotates in the second steering direction.

In one embodiment, the transmission structure includes a second pawl, a second elastic member and a second step, wherein,

the second pawl is movably connected to the screw rod;

the second elastic piece is arranged between the second pawl and the screw rod and can drive the second pawl to move towards the direction far away from the screw rod;

the second step is formed on the inner wall of the rolling brush cylinder;

when the rolling brush cylinder rotates in the second steering direction, the second pawl is abutted against the second step under the action of the elastic force of the second elastic part so as to drive the screw rod to rotate around the second steering direction.

The second pawl may ride over the second step when the drum rotates in the first direction.

In one embodiment, one end of the second pawl is rotatably connected to the screw rod, and the other end of the second pawl has a tendency to swing away from the screw rod under the action of the second elastic member.

In one embodiment, the second pawl and the first pawl are spaced in the axial direction of the screw rod.

In order to achieve the above object, the present invention further provides a cleaning device, which includes a driving device and any one of the above mentioned devices, the driving device is connected to the rolling brush.

The round brush of this application technical scheme is through with scraper threaded connection on the lead screw to make the scraper stretch out from the guide way on the round brush section of thick bamboo, the rotation of rethread limit structure restriction lead screw when the round brush section of thick bamboo rotates with first turning, make the scraper can follow the guide way and remove, twine the hair on the round brush section of thick bamboo with the cutting. In addition, when the rolling brush cylinder rotates in the second direction, the limiting structure can relieve the limitation on the rotation of the screw rod 30, so that the scraper can only cut hairs when the rolling brush cylinder rotates in the first direction, the starting frequency of the scraper can be reduced, the abrasion of parts such as the scraper and the screw rod can be reduced on the basis of meeting the requirement of hair removal, and the service life of the rolling brush can be prolonged. It can be seen that the rolling brush of the present application has the advantages of self-cleaning of hair, long service life, as compared to conventional rolling brushes.

Drawings

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

FIG. 1 is a schematic structural view of an embodiment of the cleaning apparatus of the present invention;

FIG. 2 is a schematic structural view of an embodiment of the rolling brush of the present invention;

FIG. 3 is a schematic view of the assembly of the roll brush with the first mounting cap in the embodiment of FIG. 2;

FIG. 4 is a schematic view of the assembly of the lead screw and the first mounting cap of the embodiment of FIG. 2;

FIG. 5 is a schematic structural diagram of the position limiting structure in the embodiment shown in FIG. 2;

FIG. 6 is a schematic view of the assembly of the lead screw and the roller brush cartridge of the embodiment of FIG. 2;

FIG. 7 is a schematic structural diagram of a transmission structure in the embodiment shown in FIG. 2;

fig. 8 is a schematic structural diagram of the screw rod in the embodiment shown in fig. 2.

The reference numbers illustrate:

10. a roller brush cylinder; 11. a guide groove; 20. cleaning with a brush; 21. a brush; 22. brushing glue; 30. a screw rod; 40. a scraper; 50. a limiting structure; 51. a first pawl; 52. a first elastic member; 53. a first step; 60. a first mounting cap; 70. a second mounting cap; 80. a transmission structure; 81. a second pawl; 82. A second elastic member; 83. a second step; 200. cleaning device

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a rolling brush which can be used for cleaning equipment, such as a sweeper, a dust collector and the like, and when the rolling brush is applied to the dust collector, the rolling brush can be used as a middle sweeper of the sweeper; when the rolling brush is used for a dust collector, the rolling brush can be arranged at an air inlet of a dust collection head of the dust collector.

Specifically, in the embodiment of the present invention, as shown in fig. 1 to 8, the rolling brush includes a rolling brush cylinder 10, a cleaning brush 20, a screw 30, a scraper 40, and a limiting structure 50. Wherein the content of the first and second substances,

the drum 10 is provided in a cylindrical shape, and when assembled with the cleaning apparatus, the drum 10 is rotatably assembled to the cleaning apparatus and drivingly connected to a provided driving source (typically, a motor) of the cleaning apparatus, and the drum 10 is rotatable by the provided driving source of the cleaning apparatus. The roller brush cylinder 10 is hollow to form a containing cavity (not shown), and the roller brush cylinder 10 is provided with a guide groove 11 communicated with the containing cavity.

The cleaning brush 20 is disposed at the periphery of the rolling brush cylinder 10, and when the rolling brush cylinder 10 is assembled on the cleaning device, the rotation of the rolling brush cylinder 10 drives the cleaning brush 20 to rotate, so as to clean the garbage or the dust.

The screw rod 30 is rotatably disposed in the accommodating cavity, in this embodiment, the screw rod 30 extends in the same direction as the guide groove 11, and a thread groove is disposed on the screw rod 30 along the length direction of the screw rod 30.

One end of the scraper 40 is in threaded connection with the screw rod 30, so that the scraper 40 can rotate around the screw rod 30, and the other end of the scraper 40 extends out of the guide groove 11, so that the scraper 40 is limited by the guide groove 11.

The stopper structure 50 serves to restrict the rotation of the lead screw 30 when the drum 10 rotates in a first direction to move the scraper 40 along the guide groove 11, and to release the restriction of the rotation of the lead screw 30 when the drum 10 rotates in a second direction opposite to the first direction to keep the scraper 40 stationary in the guide groove 11.

Specifically, when the rolling brush cylinder 10 rotates and the lead screw 30 remains static, the rolling brush cylinder 10 drives the scraper 40 to rotate around the lead screw 30 through the guide groove 11, and meanwhile, due to the limitation of the guide groove 11, the scraper 40 can move along the guide groove 11 while the lead screw 30 rotates, and then the scraper 40 can cut off the hair wound on the rolling brush cylinder 10, and the cut hair can be absorbed by a dust absorption device of the cleaning device, so that the problem of hair winding on the rolling brush is avoided. By means of the design, the scraper 40 can move on the rolling brush cylinder 10 by means of an external driving source, so that hairs can be cleaned without an integrated power structure of the rolling brush, the structure of the rolling brush is simplified, the volume of the rolling brush is reduced, and the production cost of the rolling brush is reduced. When the roller brush cylinder 10 rotates in the same direction as the lead screw 30, the scraper 40 remains stationary in the guide groove 11 and cannot cut hair on the roller brush cylinder 10.

Among them, the limiting structure 50 can limit the rotation of the screw rod 30 when the rolling brush cylinder 10 rotates in the first steering direction, and can release the limitation on the rotation of the screw rod 30 when the rolling brush cylinder 10 rotates in the second steering direction; therefore, when the drum brush 10 rotates in the first direction, the scraper 40 can move in the guide groove 11 to clean the hair on the drum brush 10; when the roll brush cylinder 10 rotates in the second direction, since the rotation restriction of the lead screw 30 is released, the roll brush cylinder 10 may drive the lead screw 30 to rotate by the scraper 40 so that the scraper 40 remains stationary in the guide groove 11.

Based on this, in practical applications, the turning direction of the roller brush cylinder 10 when the cleaning apparatus performs the cleaning task may be changed to the second turning direction, so that the scraper 40 and the screw 30 may be kept stationary relative to each other when the cleaning apparatus performs the cleaning task. When it is desired to clean the hair on the roller brush cylinder 10, such as after the cleaning device completes the cleaning task or when a predetermined hair cleaning time is reached, the cleaning device drives the roller brush cylinder 10 to rotate in the first direction. Therefore, the hair on the rolling brush can be cleaned automatically, the starting frequency of the scraper 40 can be reduced, the abrasion of the scraper 40, the screw rod 30 and other parts can be reduced on the basis of cleaning the hair, and the service life of the rolling brush can be prolonged.

It can be understood that, the round brush of this application technical scheme is through with scraper 40 threaded connection on lead screw 30 to make scraper 40 stretch out from the guide way 11 on a round brush section of thick bamboo 10, the rotation of lead screw 30 is restricted to rethread limit structure 50 when a round brush section of thick bamboo 10 rotates with first turning, makes scraper 40 can follow guide way 11 and removes, in order to cut the hair of twining on a round brush section of thick bamboo 10, and then can avoid the round brush because of twining the problem that the hair leads to cleaning device cleaning efficiency to descend. In addition, the limiting structure 50 can also release the limitation on the rotation of the screw rod 30 when the rolling brush drum 10 rotates in the second rotation direction, so that the scraper 40 is kept still in the guide groove 11. Therefore, under the action of the limiting structure 50, the starting frequency of the scraper 40 can be reduced, and further, on the basis of clearing hair, the abrasion of parts such as the scraper 40 and the screw rod 30 can be reduced, so that the service life of the rolling brush is prolonged. It can be seen that the rolling brush of the present application has the advantages of self-cleaning of hair, long service life, as compared to conventional rolling brushes.

Specifically, the guide groove 11 extends from one end of the drum brush 10 to the other end, and it can be understood that the guide groove 11 extends from one end of the drum brush 10 to the other end, then the scraper 40 can move from one end of the drum brush 10 to the other end along the guide groove 11, so that the moving distance of the scraper 40 on the drum brush 10 can be increased to cut off hairs on the drum brush 10 as completely as possible, and the hair removing effect can be improved.

Specifically, the extending direction of the guide groove 11 is parallel to the axial direction of the drum brush 10. With such a design, on the one hand, the moving manner of the scraper 40 can be simplified, and on the other hand, the moving distance required by the guide groove 11 to move from one end of the roller brush cylinder 10 to the other end can be shortened, so that the scraper 40 can cut off the hair on the roller brush cylinder 10 as soon as possible before a large amount of hair is entangled. Of course, the design of the present application is not limited thereto, and in other embodiments, the extending direction of the guide groove 11 may intersect with the axial direction of the roller brush barrel 10.

Specifically, a plurality of cleaning brushes 20 are provided at intervals in the circumferential direction of the drum brush 10, and the guide groove 11 is provided between any adjacent two cleaning brushes 20 and avoids the cleaning brushes 20.

Specifically, the sweeping brush 20 includes a plurality of brushes 21 and a plurality of glue brushes 22, the plurality of brushes 21 are arranged at intervals in the circumferential direction of the rolling brush cylinder 10; the plurality of glue brushes 22 are also provided, the plurality of glue brushes 22 are arranged at intervals in the circumferential direction of the rolling brush cylinder 10, and the plurality of glue brushes 22 and the plurality of brushes 21 are sequentially alternated in the circumferential direction of the rolling brush cylinder 10. The guide groove 11 is provided between any adjacent two brushes 21 and glue brush 22. It can be understood that the guide groove 11 is provided between any adjacent two of the cleaning brushes 20, and the guide groove 11 is made to avoid the cleaning brushes 20, so that the scraper 40 is prevented from moving and interfering with the cleaning brushes 20, and the service life of the roll brush can be prolonged.

Further, when the roll brush cylinder 10 rotates and the lead screw 30 remains stationary, the scraper 40 makes a reciprocating movement in the guide groove 11. Specifically, the screw rod 30 is provided with a first thread groove and a second thread groove having the same thread pitch and opposite rotation directions, and both ends of the first thread groove are respectively communicated with both ends of the second thread groove through a transition curve, so that the scraper 40 can rotate from one of the first thread groove or the second thread groove to the other.

It can be understood that the reciprocating movement of the scraper 40 in the guide groove 11 can be realized by the above-mentioned structure, and thus the cutting effect of the scraper 40 on the hair wound on the drum brush 10 can be improved. Of course, the design of the present application is not limited thereto, and the scraper 40 may move unidirectionally along the guide groove 11 in other embodiments. It should be noted that when the scraper 40 moves along the guide groove 11 in one direction, the scraper 40 can be disengaged from the thread of the screw 30 and idle relative to the screw 30 after moving to the end of the screw 30.

Further, the roller brush further comprises a first mounting cap 60 rotatably connected to one end of the roller brush barrel 10, the first mounting cap 60 is used for fixedly connecting with a cleaning device, and correspondingly, the limiting structure 50 is arranged between the first mounting cap 60 and the lead screw 30.

Specifically, when assembled with the cleaning apparatus, the first mounting cap 60 may be fixedly coupled to the cleaning apparatus, and at this time, since the brush drum 10 is rotatably coupled to the first mounting cap 60, the brush drum 10 may be freely rotated by the driving source of the cleaning apparatus, and the first mounting cap 60 may be kept fixed. Then, the limiting structure 50 is disposed between the roller brush cylinder 10 and the first mounting cap 60, so that the rotation of the screw 30 is limited by the first mounting cap 60 when the rotation direction of the roller brush cylinder 10 is changed. The design can be integrated in the round brush with the part that provides spacingly like this, and need not to rely on the exterior structure to realize the spacing to lead screw 30, and then is favorable to simplifying limit structure 50's design to be favorable to improving the round brush of this application to different cleaning device's suitability. Of course, the design of the present application is not limited thereto, and in other embodiments, the limiting structure 50 may also limit the lead screw 30 by means of an external structure, such as a rolling brush holder on a cleaning device.

As shown in fig. 4 and fig. 5, the limiting structure 50 includes a first pawl 51, a first elastic element 52 and a first step 53, wherein the first pawl 51 is movably connected to the screw rod 30; the first elastic element 52 is arranged between the first pawl 51 and the screw rod 30, and the first elastic element 52 can drive the first pawl 51 to move in a direction away from the screw rod 30; the first step 53 is formed at the first mounting cap 60. In this way, when the roller brush cylinder 10 rotates in the first direction, the first pawl 51 may interfere with the first step 53 by the elastic force of the first elastic member 52 to limit the rotation of the lead screw 30; and when the drum 10 rotates in the second rotation direction, the first pawl 51 may pass over the first step 53.

Specifically, when the roller brush cylinder 10 rotates in the second direction, the scraper 40 drives the screw rod 30 to rotate along with the roller brush cylinder 10 in the same direction under the action of the friction force between the scraper 40 and the screw rod 30, and further drives the first pawl 51 to rotate around the second direction. When the first pawl 51 passes the first step 53 in the second direction, the first pawl 51 can move from the high position of the first step 53 to the low position of the first step 53 to pass the first step 53, so that the first pawl 51 cannot limit the lead screw 30. Thus, the scraper 40 cannot move along the guide groove 11. When the rolling brush drum 10 changes from the second turning direction to the first turning direction, the first pawl 51 is driven by the screw 30 to rotate around the first turning direction, and when the first pawl 51 passes through the first step 53 around the first turning direction, the end of the first pawl 51 opposite to the screw 30 collides with the first step 53. Since the first step 53 is formed on the first mounting cap 60, the first pawl 51 is abutted against the first step 53, the first step 53 limits the rotation of the first pawl 51 in the first rotation direction, and the first pawl 51 limits the rotation of the screw rod 30 in the first rotation direction, so that the screw rod 30 can be kept still, and the scraper 40 can move along the guide groove 11 to cut hair.

It can be understood that, with the above structure, the automatic locking of the screw rod 30 can be realized when the direction of the rolling brush drum 10 is changed, not only can the screw rod 30 be locked quickly, but also the screw rod 30 can be locked without an additional power component, so that the structure of the rolling brush is simpler and the cost is lower. Of course, the design of the present application is not limited thereto, and in other embodiments, the screw rod 30 may be locked by an additional power component, such as a motor-driven claw structure for locking the screw rod 30.

Specifically, in the present embodiment, one end of the first pawl 51 is rotatably connected to the lead screw 30, and the other end has a tendency to swing away from the lead screw 30 by the first elastic member 52.

It can be understood that when the rolling brush cylinder 10 rotates, the screw rod 30 can rotate along the same direction with the rolling brush cylinder 10 without limiting, and then the first pawl 51 is arranged to be rotatably connected with the screw rod 30, so that the first pawl 51 can conveniently rotate along with the screw rod 30 when the rolling brush cylinder 10 rotates around the second direction, and the first pawl 51 can conveniently abut against the first step 53 when the rolling brush cylinder 10 rotates around the first direction; furthermore, this arrangement also facilitates the first pawl 51 to ride over the first step 53.

Accordingly, on the basis of the above-described embodiment, the first elastic member 52 of the present application is a torsion spring fitted to the first pawl 51.

It should be noted that the design of the present application is not limited thereto, and in other embodiments, the first pawl 51 may be slidably connected to the lead screw 30 and may slide along the radial direction of the lead screw 30. Accordingly, the first elastic member 52 may be a spring, a leaf spring, an elastic pad, or the like, which can be extended and contracted along the radial direction of the screw rod 30.

Further, the roller brush of the present application further includes a second mounting cap 70 disposed at the other end of the roller brush barrel 10, and the second mounting cap 70 is configured to drive the roller brush barrel 10 to rotate under the driving of an external driving source.

Specifically, when the roll brush is assembled with the cleaning device, the roll brush cylinder 10 may be drivingly connected to a driving source (i.e., the external driving source) provided by the cleaning device through the second mounting cap 70, so that the cleaning device may drive the roll brush cylinder 10 to rotate through the second mounting cap 70.

Further, the rolling brush of the present application further includes a transmission structure 80, the transmission structure 80 is disposed between the screw rod 30 and the rolling brush cylinder 10, and the transmission structure 80 is configured to drive the screw rod 30 to rotate around the second rotation direction when the rolling brush cylinder 10 rotates in the second rotation direction.

Generally speaking, when the roller brush cylinder 10 rotates around the second rotation direction, the screw rod 30 can rotate around the second rotation direction under the action of the friction force between the scraper 40 and the screw rod 30, so as to drive the screw rod 30 in such a way, a larger friction force needs to exist between the scraper 40 and the screw rod 30, which will cause that the larger friction force needs to be overcome when the scraper 40 rotates around the screw rod 30, so that the mutual abrasion between the scraper 40 and the screw rod 30 is serious, and further, the service life of the scraper 40 and the screw rod 30 will be shortened. Based on this, the round brush of this application technical scheme passes through transmission structure 80 and transmits power between round brush section of thick bamboo 10 and lead screw 30 for lead screw 30 can follow round brush section of thick bamboo 10 syntropy and rotate when round brush section of thick bamboo 10 turns to the rotation with the second, like this, need not to drive lead screw 30 through the frictional force between scraper 40 and the lead screw 30, thereby can reduce the demand to the frictional force between scraper 40 and the lead screw 30, and then be favorable to prolonging the life of scraper 40 and lead screw 30. At the same time, the design can also realize the rotation of the screw rod 30 and the rolling brush cylinder 10 at the same speed, and further can ensure that the scraper 40 can not move along the guide groove 11 when the rolling brush cylinder 10 rotates in the second rotation direction. In addition, the screw rod 30 does not need to be driven to rotate around the second steering direction through the friction force between the scraper 40 and the screw rod 30, so that the design requirements on the scraper 40 and the screw rod 30 are favorably reduced, and the production cost of the rolling brush is saved.

As shown in fig. 6 and 7, the transmission structure 80 includes a second pawl 81, a second elastic member 82 and a second step 83, wherein the second pawl 81 is movably connected to the screw rod 30; the second elastic element 82 is arranged between the second pawl 81 and the screw rod 30, and the second elastic element 82 can drive the second pawl 81 to move towards the direction away from the screw rod 30; the second step 83 is formed on the inner wall of the drum brush 10. In this way, when the roller brush cylinder 10 rotates in the second rotation direction, the second pawl 81 collides with the second step 83 by the elastic force of the second elastic member 82 to drive the screw rod 30 to rotate in the second rotation direction; and when the drum brush 10 rotates in the first direction, the second pawl 81 passes over the second step 83.

Specifically, when the rolling brush drum 10 rotates in the second direction, the second step 83 on the inner wall of the rolling brush drum 10 gradually approaches the second pawl 81, and when the second step 83 meets the second pawl 81, the second step 83 collides with the second pawl 81, so that the rolling brush drum 10 can drive the screw rod 30 to rotate around the second direction, and the rotation speed of the screw rod 30 can be the same as the rotation speed of the rolling brush drum 10, that is, the screw rod 30 and the rolling brush drum 10 can rotate synchronously under the driving of the transmission structure 80. When the rolling brush drum 10 rotates in the second rotation direction, the second pawl 81 can move from the high position of the second step 83 to the low position of the second step 83 to pass the second step 83, so that the second step 83 does not interfere with the second pawl 81, the screw rod 30 is not driven by the rolling brush drum 10 any more, and the screw rod 30 is retained by the retaining structure 50 and is kept still.

It can be understood that, with the above structure, when the rolling brush drum 10 rotates in the second direction, the screw rod 30 is driven to rotate around the second direction at the same speed and in the same direction as the rolling brush drum 10. Therefore, the screw rod 30 can be driven in time, and an additional power part is not needed for driving the screw rod 30, so that the rolling brush is simpler in structure and lower in cost. Of course, the design of the present application is not limited thereto, and in other embodiments, the lead screw 30 may be driven by an additional power component, such as a motor to drive the lead screw 30 to rotate around the second rotation direction.

Specifically, in the present embodiment, one end of the second pawl 81 is rotatably connected to the lead screw 30, and the other end has a tendency to swing away from the lead screw 30 by the second elastic member 82.

It is understood that the interference of the second pawl 81 with the second step 83 when the drum brush 10 rotates in the second rotation direction and the passing of the second step 83 when the drum brush 10 rotates in the second rotation direction are facilitated by the above-described structure.

Accordingly, on the basis of the above embodiment, the second elastic member 82 of the present application is a torsion spring fitted to the second pawl 81.

It should be noted that the design of the present application is not limited thereto, and in other embodiments, the second pawl 81 may be slidably connected to the lead screw 30 and may slide along the radial direction of the lead screw 30. Accordingly, the second elastic member 82 may be a spring, a leaf spring, an elastic pad, etc. which can be extended and contracted along the radial direction of the screw rod 30.

Further, the second pawl 81 is disposed opposite the first pawl 51 on the lead screw 30. With such an arrangement, the first pawl 51 and the second pawl 81 can be away from each other in the radial direction of the screw rod 30, and the assembly of the first pawl 51 and the second pawl 81 on the screw rod 30 is also facilitated.

Further, the second pawl 81 is provided at a distance from the first pawl 51 in the axial direction of the lead screw 30. With this arrangement, the first pawl 51 and the second pawl 81 can be displaced away from each other in the axial direction of the lead screw 30 to avoid interference between the first pawl 51 and the second pawl 81, so as to facilitate engagement between the first pawl 51 and the first step 53 and engagement between the second pawl 81 and the second step 83.

The utility model discloses still provide a cleaning device 200, this cleaning device 200 includes drive arrangement and round brush, and this drive arrangement is connected with the round brush drive, and the concrete structure of this round brush refers to above-mentioned embodiment, because this cleaning device 200 has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and it is here no longer repeated one by one.

Illustratively, the cleaning device 200 may be a sweeping robot, a vacuum cleaner, or the like.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A roll brush, comprising:

the rolling brush cylinder is hollow and provided with an accommodating cavity, a guide groove communicated with the accommodating cavity is formed in the rolling brush cylinder, and the rolling brush cylinder is used for being in driving connection with a driving source and can rotate under the driving of the driving source;

the cleaning brush is arranged on the periphery of the rolling brush cylinder;

the screw rod is rotatably arranged in the accommodating cavity;

one end of the scraper is in threaded connection with the screw rod, and the other end of the scraper extends out of the guide groove; and

and the limiting structure is used for limiting the rotation of the screw rod when the rolling brush cylinder rotates in a first steering direction so as to enable the scraper to move along the guide groove, and releasing the limitation on the rotation of the screw rod when the rolling brush cylinder rotates in a second steering direction opposite to the first steering direction so as to enable the scraper to keep still in the guide groove.

2. The roller brush of claim 1 wherein the scraper reciprocates along the guide channel as the roller brush cartridge rotates and the lead screw remains stationary.

3. The brush roll of claim 1, further comprising a first mounting cap rotatably coupled to an end of the brush roll, the first mounting cap adapted to be fixedly coupled to a cleaning device;

the limiting structure is arranged between the first mounting cap and the screw rod.

4. The round brush according to claim 3, wherein the limit structure comprises a first pawl, a first elastic member, and a first step, wherein,

the first pawl is movably connected to the screw rod;

the first elastic piece is arranged between the first pawl and the screw rod and can drive the first pawl to move towards the direction far away from the screw rod;

the first step is formed on the first mounting cap;

when the rolling brush drum rotates in a first steering direction, the first pawl can be abutted against the first step under the action of the elastic force of the first elastic piece so as to limit the rotation of the screw rod;

the first pawl may ride over the first step when the roller brush drum rotates in the second rotational direction.

5. The round brush according to claim 4, wherein one end of the first pawl is rotatably connected to the lead screw, and the other end thereof has a tendency to swing away from the lead screw by the first elastic member.

6. The roller brush according to claim 4 further comprising a drive structure disposed between the lead screw and the roller brush drum, the drive structure configured to drive the lead screw in a second rotational direction when the roller brush drum is rotated in the second rotational direction.

7. The round brush according to claim 6, wherein the transmission structure comprises a second pawl, a second elastic member, and a second step, wherein,

the second pawl is movably connected to the screw rod;

the second elastic piece is arranged between the second pawl and the screw rod and can drive the second pawl to move towards the direction far away from the screw rod;

the second step is formed on the inner wall of the rolling brush cylinder;

when the rolling brush drum rotates in the second steering direction, the second pawl is abutted against the second step under the action of the elastic force of the second elastic part so as to drive the screw rod to rotate around the second steering direction;

the second pawl may ride over the second step when the drum rotates in the first direction.

8. The round brush according to claim 7, wherein one end of the second pawl is rotatably connected to the lead screw, and the other end thereof has a tendency to swing away from the lead screw by the second elastic member.

9. The roller brush according to claim 7 wherein said second pawl is spaced from said first pawl in an axial direction of said lead screw.

10. A cleaning device comprising a drive means and a roller brush according to any one of claims 1 to 9, said drive means being in driving connection with said roller brush.

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