A side brush device and a cleaning robot

Abstract

The application discloses a side brush device and a cleaning robot, and relates to the technical field of cleaning robots, in particular to a side brush device for a cleaning robot, which comprises a shell, a side brush and a lifting driving assembly. The shell has a containing cavity capable of containing the side brush. A limiting rotation part for limiting rotation of the side brush is arranged on the inner wall of the containing cavity. A clamping part capable of being clamped with the limiting rotation part is arranged on the side brush. The lifting driving assembly is connected with the side brush. When the limiting rotation part and the clamping part are clamped, the lifting driving assembly drives the side brush to lift. Since the side brush is connected to the cleaning robot through the lifting driving assembly and is driven to lift through the lifting driving assembly, when a road section that does not need to be cleaned is encountered, the side brush is lifted, which is beneficial to avoiding hindering the travel of the cleaning robot. In addition, the side brush is lifted to realize adjustment of the height of the side brush, thereby realizing cleaning of some special areas and improving the practicability of the cleaning robot.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of robots, in particular to a side brush device and a cleaning robot. BACKGROUND

[0002] The bottom end of the cleaning robot is fixedly provided with a side brush device, which rotates around a vertical axis by a side brush driving motor to clean the ground.

[0003] When encountering a road section that does not need to be cleaned, the side brush device hinders the travel of the cleaning robot, in addition, when the side brush height needs to be adjusted to clean some special areas, since the side brush height cannot be adjusted, the cleaning of these special areas cannot be realized. SUMMARY

[0004] The side brush device provided by the embodiments of the present application can lift the side brush, which is conducive to avoiding hindering the travel of the cleaning robot, in addition, the lifting of the side brush realizes the adjustment of the side brush height, thereby realizing the cleaning of certain special areas, and improving the practicability of the cleaning robot.

[0005] In a first aspect, the embodiments of the present application provide a side brush device for a cleaning robot, comprising a shell, a side brush and a lifting driving assembly; the shell has a containing cavity capable of containing the side brush, a limiting rotation part for limiting the rotation of the side brush is arranged on the inner wall of the containing cavity, a clamping part capable of being clamped with the limiting rotation part is arranged on the side brush, and the lifting driving assembly is connected with the side brush; when the limiting rotation part and the clamping part are clamped, the lifting driving assembly drives the side brush to lift.

[0006] In a specific embodiment, the lifting driving assembly comprises a power assembly and a transmission assembly;

[0007] The power assembly is in transmission connection with the transmission assembly, and is used for driving the transmission assembly to rotate to drive the side brush to lift.

[0008] In a specific embodiment, the transmission assembly comprises a screw rod;

[0009] One end of the screw rod is in transmission connection with the power assembly;

[0010] The side brush is sleeved on the other end of the screw rod, and the side brush is in screw transmission cooperation with the screw rod.

[0011] In a specific embodiment, the side brush comprises a base and bristles fixed on the base;

[0012] The clamping part is arranged on the base, and the base is sleeved on the screw rod.

[0013] In one specific embodiment, the locking member comprises an up locking member and a down locking member;

[0014] The up locking member and the down locking member are rotatably installed on the base, and the up locking member is arranged adjacent to the down locking member.

[0015] When the screw rod rotates, the up locking member or the down locking member rotates under the action of centrifugal force and extends out of the base to abut against the rotation limiting part.

[0016] In one specific embodiment, the rotation limiting part comprises a convex rib and a concave groove arranged on the inner wall of the accommodating cavity along the direction of the rotation axis of the edge brush.

[0017] When the screw rod rotates in the first direction, the down locking member locks the convex rib or the concave groove, and the edge brush descends.

[0018] When the screw rod rotates in the second direction, the up locking member locks the concave groove or the convex rib, and the edge brush ascends.

[0019] In one specific embodiment, when the down locking member is used to lock the convex rib and the up locking member is used to lock the concave groove, the bottom end of the concave groove extends below the bottom end of the convex rib along the height direction of the rotation axis of the screw rod.

[0020] In one specific embodiment, the base is provided with a limiting member for limiting the rotation angle of the up locking member and the down locking member, respectively.

[0021] In one specific embodiment,

[0022] The concave groove is recessed in the direction away from the axis of the shell, and the convex rib is extended in the direction close to the axis of the shell.

[0023] The number of the concave groove and the convex rib is multiple, and they are arranged at intervals along the circumferential direction of the shell.

[0024] The various embodiments of the present application can be combined as needed, and the combinations of these embodiments are also within the scope of the present application and are part of the specific embodiments of the present application.

[0025] In the second aspect, the embodiments of the present application provide a cleaning robot comprising the edge brush device in the first aspect.

[0026] The embodiments of the present application have the following beneficial effects:

[0027] It can be seen that the edge brush device provided by the application has the advantages that the edge brush is connected to the cleaning robot through the lifting driving assembly, and the edge brush is lifted and driven through the lifting driving assembly, so that when encountering a section that does not need to be cleaned, the edge brush is lifted to avoid hindering the movement of the cleaning robot, and the edge brush is lifted to adjust the height of the edge brush, thereby realizing cleaning of some special areas and improving the practicability of the cleaning robot. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0029] Figure 1 An isometric structural schematic view of the edge brush device provided by the application;

[0030] Figure 2 An exploded structural schematic view of the edge brush device provided by the application;

[0031] Figure 3 A partial sectional structural schematic view of the edge brush device provided by the application;

[0032] Figure 4 A bottom structural schematic view of the edge brush device provided by the application;

[0033] Figure 5 An isometric structural schematic view of the edge brush device provided by the application when it is upside down;

[0034] Figure 6 A structural schematic view of the shell provided by the application.

[0035] Among them, Figures 1-6 Among them,

[0036] The edge brush device 1000, the edge brush 100, the base 101, the bristles 102, the soft rubber coated strip 103, the upper base cover 104, the lower base cover 105, the lifting driving assembly 200, the power assembly 201, the transmission assembly 202, the speed change assembly 202b, the output gear 202b-1, the transmission gear 202b-2, the input gear 202b-3, the screw 202a, the shell 300, the upper shell 301, the lower shell 302, the rotating shaft 303, the partition plate 304, the rotation limiting part 400, the convex rib 401, the groove 402, the clamping part 500, the upward clamping part 501, the downward clamping part 502, the limiting part 600, and the plug 700. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. Figures 1-6 The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application.

[0038] It should be understood that the terms used herein are only used to describe specific embodiments and not to limit the present application. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, elements, components, and / or groups thereof. The description that follows is the preferred embodiment of implementing the present application, which is intended to illustrate the general principles of the present application, and is not intended to limit the scope of the present application. The scope of protection of the present application is defined by the appended claims.

[0039] As shown in the drawings, in one aspect, the present application provides a side brush device 1000 for cleaning robots. Figures 1-3

[0040] The side brush device 1000 includes a side brush 100, a lifting driving assembly 200, and a housing 300. The housing 300 is mounted on the cleaning robot, and the housing 300 has a containing cavity capable of containing the side brush 100 to achieve the storage of the side brush 100.

[0041] In order to facilitate the lifting of the side brush 100, the present application discloses that a rotation limiting part 400 for limiting the rotation of the side brush 100 is arranged on the inner wall of the containing cavity. A clamping part 500 capable of being clamped with the rotation limiting part 400 is mounted on the side brush 100. When the side brush 100 is lifted, the clamping part 500 on the side brush 100 is clamped with the rotation limiting part 400 in the containing cavity of the housing 300, so as to avoid the rotation of the side brush 100 during lifting.

[0042] The lifting driving assembly 200 is mounted on the housing 300, and the lifting driving assembly 200 is in transmission connection with the side brush 100 for driving the side brush 100 to lift. Specifically, the side brush 100 is detachably connected with the lifting driving assembly 200, which is convenient for replacing the side brush 100.

[0043] When encountering a section that does not need to be cleaned, the side brush 100 is lifted and kept in the lifted position, which is conducive to avoiding hindering the travel of the cleaning robot. In addition, the side brush 100 is lifted to adjust the height of the side brush 100, thereby realizing the cleaning of some special areas and improving the practicability of the cleaning robot.​

[0044] In a possible example, as shown in Figure 2 The lifting driving assembly 200 comprises a power assembly 201 and a transmission assembly 202, the power assembly 201 is in transmission connection with the transmission assembly 202, and is used to drive the transmission assembly 202 to rotate to drive the edge brush 100 to lift. The transmission assembly 202 transmits the power of the power assembly 201 to the edge brush 100 to realize the lifting of the edge brush 100.

[0045] It should be noted that the lifting driving assembly 200 can also be arranged to only comprise the power assembly 201, for example, the power assembly 201 is a gas cylinder, a hydraulic cylinder or an electric push rod mounted on the cleaning robot, so as to realize the lifting of the whole edge brush 100.

[0046] In a possible example, as shown in Figure 3 The transmission assembly 202 comprises a screw rod 202a, the screw rod 202a is in transmission connection with the power assembly 201, the edge brush 100 is sleeved outside the screw rod 202a, and a threaded hole is formed on the edge brush 100, and the threaded hole on the edge brush 100 is in screw transmission cooperation with the screw rod 202a. That is, the screw rod 202a not only drives the edge brush 100 to lift, but also drives the edge brush 100 to rotate. When the edge brush 100 is lowered to be separated from the limit rotation part 400, the screw rod 202a is driven to rotate to realize the cleaning operation. The screw rod 202a can realize the driving of lifting and rotation at the same time, and the structure of the edge brush device 1000 is simplified.

[0047] Of course, a lead screw nut can also be sleeved outside the screw rod 202a, the lead screw nut is in screw transmission cooperation with the screw rod 202a, and the edge brush 100 is integrally mounted on the lead screw nut to realize the lifting of the edge brush 100.

[0048] In order to avoid the edge brush 100 from slipping down on the screw rod 202a, the bottom end of the screw rod 202a is fixed with a plug 700 for limiting the edge brush 100, and the specific mechanism of the plug 700 is not limited, as long as the structure can block the edge brush 100 from slipping, which belongs to the protection scope of the present application. Figures 4-5 As shown in

[0049] In a possible example, the transmission assembly further comprises a speed change assembly 202b, and the speed change assembly 202b is a gear set or a chain wheel and chain in mesh transmission.

[0050] Taking the speed change assembly 202b as a gear set as an example, as shown in Figure 2As shown, the gear set comprises an output gear 202b-1, a transmission gear 202b-2 and an input gear 202b-3, the output gear 202b-1 is installed at the output end of the power assembly 201, the transmission gear 202b-2 is rotatably installed on the housing 300 through the rotating shaft 303, and the input gear 202b-3 is installed on the screw rod 202a.

[0051] The power assembly 201 comprises a motor and an output shaft, the output shaft is rotatably installed on the motor and is in transmission connection with the gear set 202b to drive the screw rod 202a to rotate. It should be noted that the power assembly 201 is not limited to the above structure, and can also be a rotary air cylinder or the like.

[0052] In a possible example, the housing 300 is further provided with a containing cavity, the gear set 202b is arranged in the containing cavity, and the containing cavity and the accommodating cavity are provided with a partition plate 304, as shown in Figure 3 As shown, the partition plate 304 is provided with a mounting through hole allowing the screw rod 202a to pass through, a bearing is installed at the mounting through hole, the screw rod 202a is fixed on the bearing, that is, the screw rod 202a is rotatably connected with the partition plate 304 through the bearing, and the gear set 202b is contained in the containing cavity.

[0053] In a possible example, in order to facilitate disassembly and assembly of the transmission assembly 202, the housing 300 comprises an upper shell 301 and a lower shell 302, the containing cavity and the accommodating cavity are arranged on the lower shell 302, and the upper shell 301 is detachably installed on the lower shell 302 to close the containing cavity. Specifically, the upper shell 301 and the lower shell 302 are detachably connected through screws or the like, and can also be clamped or the like, and the specific connection mode is not limited.

[0054] The material of the upper shell 301 and the lower shell 302 is not limited, and can be plastic material or metal material or the like.

[0055] In a possible example, the edge brush 100 comprises a base 101 and bristles 102, the bristles 102 are fixed in the circumferential direction of the base 101, and the base 101 is in transmission connection with the transmission assembly. Specifically, the base 101 is in screw transmission connection with the screw rod 202a.

[0056] In order to facilitate the bristles 102 to be accommodated in the accommodating cavity, the base 101 is provided with a plurality of soft rubber coated strips 103 in the circumferential direction, and the bristles 102 are fixed on the soft rubber coated strips 103.

[0057] In a possible example, the locking member 500 comprises a rising clamping member 501 and a falling clamping member 502, as shown in Figure 2 As shown, one end of the rising clamping member 501 and the falling clamping member 502 is rotatably installed on the base 101.

[0058] Specifically, the base 101 comprises a base upper cover 104 and a base lower cover 105, the rising buckle 501 and the falling buckle 502 are both mounted on the base lower cover 105, the bristles 102 are mounted on the circumference of the base lower cover 105, and the base upper cover 104 is covered on the base lower cover 105 and is detachably fixed together through screws or the like.

[0059] When the screw rod 202a is in a static state, the rising buckle 501 and the falling buckle 502 are both completely accommodated on the base 101. The rising buckle 501 is arranged adjacent to the falling buckle 502; when the screw rod 202a rotates, the rising buckle 501 or the falling buckle 502 rotates under the action of centrifugal force and extends out of the base 101 to abut against the rotation limiting part 400.

[0060] The rising buckle 501 and the falling buckle 502 are set to realize extension and retraction through centrifugal force, so that a special driver is avoided to drive the rising buckle 501 and the falling buckle 502 to move, energy is saved, and cost is reduced.

[0061] Of course, the structure of the above-mentioned buckling part 500 is only a preferred embodiment of the present application, and in actual application, the buckling part 500 can also be set to other structures. For example, the buckling part 500 is telescopically mounted on the side brush 100 through a driver, and the driver is a pneumatic cylinder, a hydraulic cylinder or an electric push rod, etc. At this time, the rising buckle 501 and the falling buckle 502 can also be combined into one buckle.

[0062] The rising buckle 501 and the falling buckle 502 are both eccentrically mounted on the mounting surface of the side brush 100, and the mounting surface of the side brush 100 is vertically arranged with the screw rod 202a. The hinge end of the rising buckle 501 and the hinge end of the falling buckle 502 are both large ends, and the other end of the rising buckle 501 and the other end of the falling buckle 502 are both small ends, so as to facilitate the opening of the rising buckle 501 and the falling buckle 502 under the action of centrifugal force.

[0063] In order to facilitate the control of the rotation angle of the rising buckle 501 and the falling buckle 502, the base 101 is provided with a limiting part 600 for limiting the rotation angle of the rising buckle 501 and the falling buckle 502.

[0064] Specifically, the mounting surface of the side brush 100 is provided with a plurality of containing grooves for separately placing the rising buckle 501 and the falling buckle 502.

[0065] The limiting part 600 is a convex part surrounding the containing groove on the mounting surface of the side brush 100. In order to facilitate the rising buckle 501 and the falling buckle 502 to be in contact with the convex part when being in the retracted state (i.e. the state that the rising buckle 501 and the falling buckle 502 are completely accommodated in the mounting surface of the side brush 100), the present application discloses that the surfaces of the rising buckle 501 and the falling buckle 502 respectively abutting against the convex part are all arc surfaces in contact with the convex part.

[0066] In one possible example, as shown in Figure 3 The present application discloses that the limiting rotation part 400 includes the convex edges 401 and the concave grooves 402, which are both arranged on the inner wall of the containing cavity along the direction of the rotation axis of the side brush 100. The number of the convex edges 401 and the concave grooves 402 is not limited to one. In order to realize the uniformity of the circumferential limiting rotation force applied to the side brush 100 when the side brush 100 is raised or lowered, the present application discloses that the convex edges 401 and the concave grooves 402 are uniformly distributed on the circumferential inner wall of the containing cavity.

[0067] When the screw rod 202a rotates in the first direction, the falling buckle 502 clamps the convex edge 401 or the concave groove 402, and the side brush 100 is lowered. When the screw rod 202a rotates in the second direction, the rising buckle 501 clamps the concave groove 402 or the convex edge 401, and the side brush 100 is raised. It should be noted that the rotation directions of the first direction and the second direction are opposite. The first direction can be set as clockwise or counterclockwise, and correspondingly, the second direction can be set as counterclockwise or clockwise.

[0068] In order to realize that the side brush 100 can be automatically raised when the screw rod 202a rotates in the second direction, it is preferred that the falling buckle 502 is used to clamp the convex edge 401, the rising buckle 501 is used to clamp the concave groove 402, and the bottom end of the concave groove 402 extends below the bottom end of the convex edge 401 along the height direction of the rotation axis of the screw rod 202a. The length by which the bottom end of the concave groove 402 extends beyond the bottom end of the convex edge 401 is not limited, as long as the side brush 100 can rotate with the screw rod 202a after the falling buckle 502 is separated from the convex edge 401, and the rising buckle 501 can open the clamping in the concave groove 402 when the screw rod 202a reversely rotates. The length belongs to the protection scope of the present application. As shown in Figure 6 The bottom end of the concave groove 402 extends to the bottom end of the housing 300, i.e. the bottom end of the concave groove 402 is open. It can be understood that the length of the above-mentioned concave groove 402 is only one specific embodiment of the present application. In actual application, the bottom end of the concave groove 402 can also be set not to extend to the bottom end of the housing 300, i.e. the bottom end of the concave groove 402 is closed. It should be noted that the bottom end of the concave groove 402 refers to the bottom end of the concave groove 402 along the height direction of the housing 300 in use.

[0069] When it is detected that the side brush 100 is locked, the side brush 100 stops ascending.

[0070] It can be seen from the present application that, by setting the bottom end of the groove 402 to extend below the bottom end of the convex rib 401, the descending buckle 502 can be clamped by the convex rib 401 to limit the rotation of the side brush 100 during the descending process when the screw rod 202a rotates in the first direction, so as to realize the descending of the side brush 100; and the ascending buckle 501 can be smoothly clamped by the groove 402 to limit the rotation of the side brush 100 during the ascending process when the screw rod 202a reversely rotates, so as to realize the ascending of the side brush 100.

[0071] It should be noted that the rotation limiting part 400 can also be provided with only the convex rib 401 or the groove 402. Taking the case that the rotation limiting part 400 only contains the convex rib 401 as an example, a retractable extension is arranged on the inner wall of the accommodating cavity, the cross section and the length direction of the extension are the same as those of the convex rib 401, the top end of the extension is attached to the bottom end of the convex rib 401 when the extension is extended, and the extension is completely accommodated in the inner wall of the accommodating cavity and flush with the inner wall surface of the accommodating cavity when the extension is retracted. When the side brush 100 needs to descend, the extension is in the retracted state, and when the side brush 100 needs to ascend, the extension is in the extended state.

[0072] In a possible example, the present application specifically discloses that the groove 402 is recessed in the direction away from the axis of the shell 300, and the convex rib 401 is extended in the direction close to the axis of the shell 300. That is, along the radial direction of the shell, the convex rib 401 is closer to the axis of the shell 300 than the groove 402, so that one of the ascending buckle 501 or the descending buckle 502 can be clamped to the convex rib 401 or the groove 402 when the screw rod 202a rotates in the first direction, and the other one can be clamped to the groove 402 or the convex rib 401 when the screw rod 202a rotates in the second direction.

[0073] It can be understood that the width of the convex rib 401 along the circumferential direction of the shell 300 is not limited, as long as it can clamp the ascending buckle 501 or the descending buckle 502, and the width of the groove 402 along the circumferential direction of the shell 300 needs to meet the requirement that the end of the ascending buckle 501 or the descending buckle 502 can be extended into the groove 402.

[0074] The number of the groove 402 and the convex rib 401 is multiple, and they are arranged at intervals along the circumferential direction of the shell 300.

[0075] The present application also provides a cleaning robot comprising the side brush device 1000 according to any one of the above embodiments.

[0076] Since the cleaning robot disclosed in the present application comprises the side brush device 1000 in any one of the above embodiments, the side brush device 1000 has the beneficial effects.

[0077] It should be noted that the words indicating the orientation, such as up, down, etc. in the present application are set in the direction of the drawings attached to the specification, only for the convenience of expression, and do not have other specific meanings. Figure 1

[0078] It should also be noted that in the present application, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the article or device including the above element.

[0079] The principles and implementation modes of the present application are described by applying specific examples in the present application, and the above embodiment description is only used to help understand the core idea of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.​

Claims

1. A side brush device for a cleaning robot, characterized in that, Includes the housing, side brushes, and lifting drive assembly; The outer shell has a receiving cavity that can accommodate the side brush. The inner wall of the receiving cavity is provided with a rotation limiting part that limits the rotation of the side brush. The side brush is provided with a locking member that can engage with the rotation limiting part. The lifting drive assembly is connected to the side brush for driving the side brush to lift. When the side brush is raised, the rotation limiting part and the locking member engage to prevent the side brush from rotating during the raising process, and the side brush remains in the raised position.

2. The side brush device according to claim 1, characterized in that, The lifting drive assembly includes a power assembly and a transmission assembly; The power component is connected to the transmission component and is used to drive the transmission component to rotate so as to drive the side brush to rise and fall.

3. The side brush device according to claim 2, characterized in that, The transmission assembly includes a screw; One end of the screw is connected to the power assembly for transmission. The side brush is mounted on the other end of the screw, and the side brush is engaged with the screw in a helical transmission.

4. The side brush device according to claim 3, characterized in that, The side brush includes a base and bristles fixed on the base; The locking element is provided on the base, and the base is fitted onto the screw.

5. The side brush device according to claim 4, characterized in that, The locking mechanism includes an upward locking mechanism and a downward locking mechanism; Both the rising and lowering fasteners can be rotatably mounted on the base, and the rising and lowering fasteners are arranged adjacent to each other; When the screw rotates, the rising or falling latching member rotates under the action of centrifugal force, extending out of the base and abutting against the rotation limiting part.

6. The side brush device according to claim 5, characterized in that, The rotation limiting part includes a protrusion and a groove disposed on the inner wall of the receiving cavity along the rotation axis direction of the side brush; When the screw rotates in the first direction, the descending latch engages the protrusion or groove, and the side brush descends; When the screw rotates in the second direction, the rising buckle engages the groove or protrusion, and the side brush rises.

7. The side brush device according to claim 6, characterized in that, When the descending latch is used to lock the protruding ridge and the ascending latch is used to lock the groove, the bottom end of the groove extends below the bottom end of the protruding ridge along the height direction of the rotation axis of the screw.

8. The side brush device according to claim 7, characterized in that, The base is respectively provided with limiting members to limit the rotation angle of the rising buckle and the falling buckle.

9. The side brush device according to any one of claims 6-8, characterized in that, The groove is formed by the outer shell being recessed in a direction away from the center line of the outer shell, and the ridge is formed by the outer shell extending in a direction close to the center line of the outer shell; The number of grooves and protrusions are both multiple, and they are spaced apart along the circumferential direction of the outer shell.

10. A cleaning robot, characterized in that, Includes the side brush device as described in any one of claims 1-9.

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