Rolling brush lifting mechanism and sweeper

Abstract

The utility model belongs to the technical field of sweeping robots, and discloses a rolling brush lifting mechanism and a sweeper, the rolling brush lifting mechanism comprises a rolling brush assembly, a limiting piece and a driving assembly, the rolling brush assembly comprises a rolling brush, and the rolling brush and the limiting piece are movably connected to an external mounting piece; the limiting piece is provided with a top wall and a bottom wall, the driving assembly comprises a driving piece and a cam, the driving piece is arranged on the rolling brush, the cam is arranged at the output end of the driving piece so as to drive the cam to rotate between the top wall and the bottom wall, and a protruding part of the cam can abut against the top wall and the bottom wall so that the rolling brush can ascend and descend equivalent to an external installation piece. The sweeper comprises a shell, the rolling brush lifting mechanism and a detection sensor, the detection sensor can recognize the ground medium type and the ground state, the detection sensor is in signal connection with a driving part, different grounds can be recognized, ascending and descending of the rolling brush are controlled according to the different grounds, and reasonable sweeping is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of floor sweeping robots, in particular to a roller brush lifting mechanism and a floor sweeper. Background Art

[0002] When a floor sweeper cleans a house, it will encounter different floor media and floor conditions, and different cleaning actions need to be performed for different media; for example: when the floor sweeper walks on hard floor media such as floors and tiles to clean dirt, the roller brush needs to contact the above hard floor media; when the ground is in a wet state and has wet dirt, the roller brush needs to be away from the ground so as to pass through the above area to prevent the roller brush from sticking to the dirt and expanding the dirt area; when the floor media is a carpet or a soft media surface, in order to prevent it from being lifted by soft media such as carpets and effectively clean the dirt on the carpet, the height of the roller brush needs to be lowered compared to the hard floor media; thus, for different floor media and floor conditions, the roller brush needs to be able to make corresponding actions; however, the roller brush in the prior art cannot be lifted or lowered, so it cannot achieve reasonable cleaning according to different floor media and floor conditions. Summary of the Utility Model

[0003] One of the purposes of the utility model is to provide a roller brush lifting mechanism that can realize the lifting and lowering of the roller brush;

[0004] Another purpose of the utility model is to provide a floor sweeper that can identify different floors and control the lifting and lowering of the roller brush according to different floors to achieve reasonable cleaning.

[0005] To achieve the above purposes, the utility model adopts the following technical solutions:

[0006] A roller brush lifting mechanism is installed on an external component; the roller brush lifting mechanism includes:

[0007] A roller brush assembly, the roller brush assembly includes a roller brush, and the roller brush is movably connected to the external mounting member;

[0008] A limiting member is arranged on the external mounting member, and the limiting member has a top wall and a bottom wall that are spaced apart from each other up and down;

[0009] A driving assembly, the driving assembly includes a driving member and a cam, the driving member is arranged on the roller brush, the cam is located between the top wall and the bottom wall, and the cam is arranged at the output end of the driving member to drive the protruding part of the cam to rotate and respectively abut against the top wall and the bottom wall, so that the roller brush is lifted or lowered relative to the external mounting member.

[0010] In some embodiments, the limiting member includes a limiting body, the limiting body is provided with a top groove, the cam is located in the top groove, the top wall and the bottom wall are two opposite groove walls in the top groove along the height direction, and the output end of the driving member can be connected to the cam through the notch of the top groove.

[0011] In some embodiments, the limiting member further includes a limiting protrusion, and the limiting protrusion is arranged on the top wall. When the protruding portion of the cam abuts against the bottom wall, the roller brush abuts against the limiting protrusion.

[0012] In some embodiments, a notch is provided on the groove wall adjacent to the top groove and the groove opening, the limiting protrusion is provided on the side of the top wall facing the bottom wall, and a limiting top block is provided on the roller brush, the limiting top block is opposite to the notch, and the limiting top block can resist the limiting protrusion through the notch.

[0013] In some embodiments, the limiting member also includes an extension wall and a reinforcing rib. The extension wall is extended from both the limiting body located above the top wall and the limiting body located below the top wall. The reinforcing rib is connected between the extension wall and the top wall and between the extension wall and the bottom wall.

[0014] In some embodiments, a surface of the reinforcing rib located below the bottom wall facing the rolling brush is an inclined surface, and the inclined surface gradually moves away from the rolling brush from an end close to the bottom wall to an end away from the bottom wall.

[0015] In some embodiments, the limiting body is provided with a connecting hole penetrating along a height direction, and the limiting body is connected to the external mounting member via a connecting member passing through the connecting hole.

[0016] In some embodiments, the roller brush assembly further includes a connecting rod, one end of the connecting rod is connected to the roller brush, the other end of the connecting rod is connected to the external mounting member, and the driving member is disposed on the connecting rod.

[0017] In some embodiments, two connecting rods are provided, and the two connecting rods are respectively connected to opposite ends of the roller brush.

[0018] A sweeper is also provided, which includes a shell, a roller brush lifting mechanism and a detection sensor. The roller brush, the limit member and the detection sensor are all arranged on the shell. The detection sensor can identify the ground medium and the ground state. The detection sensor is connected to the drive member signal.

[0019] Beneficial effects of the utility model:

[0020] The cam is arranged between the top wall and the bottom wall of the limiting member. Thus, when the protruding portion of the cam is located between the top wall and the bottom wall, the rolling brush is in the initial state. When the driving member drives the cam to rotate, when the protruding portion of the cam abuts against the bottom wall, since the limiting member is fixed on the external component and the driving member is fixed on the rolling brush, the rolling brush can be driven to rise relative to the external component, that is, the height of the rolling brush is increased relative to the initial state. When the protruding portion of the cam abuts against the top wall, the rolling brush can be driven to descend relative to the external component, that is, the height of the rolling brush is decreased relative to the initial state. Furthermore, the lifting of the rolling brush is realized when the cam rotates.

[0021] When the above rolling brush lifting mechanism is applied to a floor sweeping robot, the floor sweeping robot can control the rising and falling of the rolling brush according to different floors to achieve reasonable cleaning. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the rolling brush lifting mechanism of the present utility model;

[0023] Figure 2 is a sectional view of the rolling brush lifting mechanism of the present utility model when the cam abuts against the bottom wall;

[0024] Figure 3 is a schematic diagram of the rolling brush lifting mechanism of the present utility model without showing the limiting member;

[0025] Figure 4 is a schematic diagram of the limiting member in the rolling brush lifting mechanism of the present utility model;

[0026] Figure 5 is a schematic diagram of the floor sweeping robot of the present utility model.

[0027] In the figure:

[0028] 1. Rolling brush assembly; 11. Rolling brush; 12. Limiting top block; 13. Link rod;

[0029] 2. Limiting member; 21. Top wall; 22. Bottom wall; 23. Limiting convex block; 24. Notch; 25. Gap; 26. Extension wall; 27. Reinforcing rib plate; 28. Connecting hole;

[0030] 3. Driving assembly; 31. Driving member; 32. Cam;

[0031] 100. Housing; 200. Detection sensor. Detailed Description of the Embodiment

[0032] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.

[0033] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0036] As Figures 1 to 4 shown, the present utility model provides a roller brush lifting mechanism, which is installed on an external component and includes a roller brush assembly 1, a limiting member 2, and a driving assembly 3. The roller brush assembly 1 includes a roller brush 11, and the roller brush 11 is movably connected to an external mounting member; the limiting member 2 is arranged on the external mounting member, and the limiting member 2 has a top wall 21 and a bottom wall 22 spaced apart from each other up and down; the driving assembly 3 includes a driving member 31 and a cam 32. The driving member 31 is arranged on the roller brush 11, and the cam 32 is arranged at the output end of the driving member 31 to drive the cam 32 to rotate between the top wall 21 and the bottom wall 22. The protruding part of the cam 32 can respectively abut against the top wall 21 and the bottom wall 22 to lift or lower the roller brush 11 relative to the external mounting member.

[0037] The cam 32 is arranged between the top wall 21 and the bottom wall 22 of the limiting member 2. Thus, when the protruding portion of the cam 32 is between the top wall 21 and the bottom wall 22, the rolling brush 11 is in the initial state. When the driving member 31 drives the cam 32 to rotate, when the protruding portion of the cam 32 abuts against the bottom wall 22, since the limiting member 2 is fixed on the external mounting member and the driving member 31 is fixed on the rolling brush 11, the rolling brush 11 can be driven to rise relative to the external mounting member, that is, the height of the rolling brush 11 is increased relative to the initial state. When the protruding portion of the cam 32 abuts against the top wall 21, the rolling brush 11 can be driven to descend relative to the external mounting member, that is, the height of the rolling brush 11 is decreased relative to the initial state. Furthermore, the lifting and lowering of the rolling brush 11 are realized when the cam 32 rotates. It can also be that when the protruding portion of the cam 32 is on the top wall 21, the rolling brush 11 is in the initial state. When the driving member 31 drives the cam 32 to rotate, when the protruding portion of the cam 32 abuts against the bottom wall 22, since the limiting member 2 is fixed on the external mounting member and the driving member 31 is fixed on the rolling brush 11, the rolling brush 11 can be driven to rise relative to the external mounting member, that is, the height of the rolling brush 11 is increased relative to the initial state. Of course, it can be understood that the position of the rolling brush 11 when the protruding portion of the cam 32 is on the bottom wall 22 can be used as the initial state, which will not be elaborated here.

[0038] As Figure 1 shown, in some embodiments, the rolling brush assembly 1 further includes a connecting rod 13. One end of the connecting rod 13 is connected to the rolling brush 11, and the other end of the connecting rod 13 is rotatably connected to the external mounting member through a connecting shaft, so that the rolling brush 11 can rotate relative to the external mounting member through the rotating shaft, making it more labor-saving for the rolling brush 11 to lift and lower. In the current embodiment, the driving member 31 is arranged on the connecting rod 13. Thus, when the cam 32 at the output end of the driving member 31 rotates, it can act on the connecting rod 13 in the reverse direction by abutting against the top wall 21 or the bottom wall 22, and then drive the rolling brush 11 to increase or decrease its height. Exemplarily, the driving member 31 is a motor. In some embodiments, the rolling brush 11 can be but is not limited to a cylindrical structure. To ensure the stability of the rolling brush 11, two connecting rods 13 are provided, and the two connecting rods 13 are respectively connected to the axially opposite ends of the rolling brush 11. Further, the rolling brush assembly 1 further has a housing, the housing is U-shaped, the rolling brush 11 is arranged inside the housing, and the connecting rod 13 is connected to the outside of the housing.

[0039] As Figure 2 and Figure 4As shown, in some embodiments, the limiting member 2 includes a limiting body, and an abutting groove is formed on the limiting body. The top wall 21 and the bottom wall 22 are respectively the groove walls of the abutting groove opposite to each other in the height direction, and the cam 32 is located in the abutting groove. The notch 24 faces the side of the driving member 31, so that the output end of the driving member 31 can be connected to the cam 32 through the notch 24 to drive the rotation of the cam 32. It can be understood that the cam 32 can also be installed in the abutting groove through the notch 24. Exemplarily, the limiting body is provided with a connecting hole 28 penetrating in the height direction, and the limiting body is connected to an external mounting member through a connecting member passing through the connecting hole 28. The connecting member can be, but is not limited to, a bolt or a screw, etc.

[0040] When the roller brush 11 rises, that is, when the protruding portion of the cam 32 abuts against the bottom wall 22, in order to keep the roller brush 11 stable and avoid the roller brush 11 from jumping due to contact with protrusions or the like caused by certain factors, such as Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, the limiting member 2 further includes a limiting protrusion 23. The limiting protrusion 23 is arranged on the top wall 21. The protruding portion of the cam 32 abuts against the bottom wall 22, so that when the roller brush 11 rises to the highest point, the roller brush 11 abuts against the limiting protrusion 23, so that when the roller brush 11 has a tendency to jump again, it can be resisted by the limiting protrusion 23. Further, in order to save space, a notch 25 is provided on the groove wall of the abutting groove adjacent to the notch 24, and the limiting protrusion 23 is arranged on the side of the top wall 21 facing the bottom wall 22. A limiting top block 12 is arranged on the roller brush 11. It can be understood that the limiting top block 12 can be arranged on the housing. The limiting top block 12 is opposite to the notch 25. During the lifting and lowering process of the roller brush 11, the limiting protrusion 23 is driven to move at the notch 25. Further, after the roller brush 11 rises to the highest point, the limiting top block 12 can abut against the limiting protrusion 23 through the notch 25 to form a limit in height. It can be understood that when the roller brush 11 descends to the lowest point, that is, after the protruding portion of the cam 32 abuts against the top wall 21, if the roller brush 11 encounters a hard object again, due to its being restricted by the cam 32, there is no such jumping phenomenon.

[0041] Such as Figure 4 As shown, in some embodiments, in order to ensure the strength of the top wall 21 and the bottom wall 22 and avoid deformation, the limiting member 2 further includes extension walls 26 and reinforcing rib plates 27. The extension walls 26 are respectively extended and arranged on the top wall 21 and the bottom wall 22, and the reinforcing rib plates 27 are respectively connected to the extension walls 26 and the top wall 21 and the extension walls 26 and the bottom wall 22, so as to strengthen the strength of the top wall 21 and the bottom wall 22. In the current embodiment, the extension walls 26, the reinforcing rib plates 27 and the limiting body are integrally formed.

[0042] Further, the surface of the reinforcing rib plate 27 below the bottom wall 22 facing the rolling brush 11 is an inclined surface, which gradually moves away from the rolling brush 11 from the end close to the bottom wall 22 to the end away from the bottom wall 22, so as to prevent interference between the rolling brush 11 and the reinforcing rib plate 27 below the bottom wall 22.

[0043] As Figure 5 shown, the present utility model further provides a floor sweeper, which includes a housing 100, the above-mentioned rolling brush lifting mechanism, and a detection sensor 200. The rolling brush 11, the limiting member 2, and the detection sensor 200 are all arranged on the housing 100. The detection sensor 200 can identify the type of ground medium and the ground state. The detection sensor 200 is signal-connected to the driving member 31, so as to control the rotation of the driving member 31 according to the ground medium (such as ceramic tiles, floors or carpets, etc.) and the ground state (whether there is a wet state and wet dirt) detected by the detection sensor 200, so that the cam 32 at the output end of the driving member 31 rotates, driving the rolling brush 11 to lift and lower relative to the housing 100; thus, when the protruding part of the cam 32 is between the top wall 21 and the bottom wall 22, it can clean the dirt while walking on hard ground media such as floors and ceramic tiles; when the ground is in a wet state and wet dirt, the protruding part of the cam 32 abuts against the bottom wall 22, driving the rolling brush 11 to rise above the wet state and wet dirt; when encountering soft media such as carpets, the protruding part of the cam 32 abuts against the top wall 21, which can drive the rolling brush 11 to descend, effectively cleaning the dirt on the carpet and realizing reasonable cleaning of different floors.

[0044] Obviously, the above-mentioned embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limiting the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A rotary brush lifting mechanism, installed on an external mounting member; characterized in that, Comprising: A rotary brush assembly (1), the rotary brush assembly (1) includes a rotary brush (11), and the rotary brush (11) is movably connected to the external mounting member; A limiting member (2), the limiting member (2) is arranged on the external mounting member, and the limiting member (2) has a top wall (21) and a bottom wall (22) spaced relatively up and down; A driving assembly (3), the driving assembly (3) includes a driving member (31) and a cam (32), the driving member (31) is arranged on the rotary brush (11), the cam (32) is located between the top wall (21) and the bottom wall (22), the cam (32) is arranged at the output end of the driving member (31) to drive the protruding part of the cam (32) to rotate and abut against the top wall (21) and the bottom wall (22) respectively, so that the rotary brush (11) moves up and down relative to the external mounting member.

2. The roller brush lifting mechanism according to claim 1, characterized in that The limiting member (2) includes a limiting body, the limiting body is provided with an abutting groove, the cam (32) is located in the abutting groove, the top wall (21) and the bottom wall (22) are two opposite groove walls in the height direction of the abutting groove, and the output end of the driving member (31) can be connected to the cam (32) through the notch (24) of the abutting groove.

3. The roller brush lifting mechanism according to claim 2, characterized in that, The limiting member (2) further includes a limiting protrusion (23), the limiting protrusion (23) is arranged on the top wall (21), and when the protruding part of the cam (32) abuts against the bottom wall (22), the rotary brush (11) abuts against the limiting protrusion (23).

4. The roller brush lifting mechanism according to claim 3, wherein, A notch (25) is arranged on the groove wall of the abutting groove adjacent to the notch (24), the limiting protrusion (23) is arranged on the surface of the top wall (21) facing the bottom wall (22), a limiting top block (12) is arranged on the rotary brush (11), the limiting top block (12) is opposite to the notch (25), and the limiting top block (12) can abut against the limiting protrusion (23) through the notch (25).

5. The roller brush lifting mechanism according to claim 3, wherein, The limiting member (2) further includes an extension wall (26) and a reinforcing rib plate (27), the extension wall (26) extends above the top wall (21) and below the top wall (21) of the limiting body, and the reinforcing rib plate (27) is connected between the extension wall (26) and the top wall (21) and between the extension wall (26) and the bottom wall (22).

6. The roller brush lifting mechanism according to claim 5, wherein, The surface of the reinforcing rib plate (27) located below the bottom wall (22) facing the rotary brush (11) is an inclined surface, and the inclined surface gradually moves away from the rotary brush (11) from the end close to the bottom wall (22) to the end far from the bottom wall (22).

7. The roller brush lifting mechanism according to claim 2, wherein, The limiting body is provided with a connection hole (28) penetrating in the height direction, and the limiting body is connected to the external mounting member through a connecting piece passing through the connection hole (28).

8. The roller brush lifting mechanism according to any one of claims 1-6, characterized in that, The roller brush assembly (1) further comprises a connecting rod (13), one end of the connecting rod (13) is connected to the roller brush (11), the other end of the connecting rod (13) is connected to the external mounting member, and the driving member (31) is arranged on the connecting rod (13).

9. The roller brush lifting mechanism according to claim 8, wherein, Two connecting rods (13) are provided, and the two connecting rods (13) are respectively connected to opposite ends of the roller brush (11).

10. Floor sweeping machine, comprising a housing (100), characterized in that, The invention also includes a roller brush lifting mechanism and a detection sensor (200) as described in any one of claims 1 to 9, wherein the roller brush (11), the limiting member (2) and the detection sensor (200) are all arranged on the housing (100), and the detection sensor (200) can identify the ground medium and the ground state, and the detection sensor (200) is connected to the driving member (31) by signal.

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