Sweeping mechanism, sweeping device and sweeping robot

Abstract

The utility model provides a sweeping mechanism, a sweeping device and a sweeping robot. The cleaning mechanism comprises a cleaning piece, a connecting piece and a plurality of connecting rod assemblies hinged to the connecting piece, and the connecting rod assemblies are arranged in the circumferential direction of the connecting piece. Wherein the sweeping piece is connected to the connecting piece, or the part, close to the connecting piece, of one connecting rod assembly, and the sweeping piece can be lifted when torque is input into at least one connecting rod assembly. After at least one connecting rod assembly inputs torque, the part, close to the connecting piece, of each connecting rod assembly and the connecting piece are lifted. Due to the fact that the sweeping piece is connected to the connecting piece or the part, close to the connecting piece, of one connecting rod assembly, when the torque is input into at least one connecting rod assembly, the sweeping piece can be lifted, the sweeping piece is prevented from making contact with liquid pollutants, then the adverse effect of the liquid pollutants on the sweeping piece is avoided, and the sweeping effect of the sweeping piece is improved.

Description

Technical Field

[0001] This disclosure relates to the technical field of sweeping robots, and in particular to a sweeping mechanism, a sweeping device, and a sweeping robot. Background Technology

[0002] Robotic vacuum cleaners have become a mainstream appliance in young families due to their automated cleaning capabilities. Their cleaning devices use high-speed rotating bristles to sweep dry debris such as dust and crumbs towards the suction port, thus achieving efficient cleaning.

[0003] However, the shortcomings of cleaning devices become apparent when dealing with liquid contaminants such as water stains on the floor and kitchen grease. Because the bristles of the cleaning device are made of soft fibers with numerous pores, liquid contaminants adhere to the bristles upon contact. As the cleaning device continues to rotate, the liquid contaminants are carried away from the original contaminated area and then onto the clean floor, causing secondary pollution. Therefore, it is urgent to address the problem of the cleaning effect of cleaning devices being affected by liquid contaminants. Utility Model Content

[0004] The purpose of this disclosure is to overcome the above-mentioned technical defects and provide a cleaning mechanism, cleaning device, and sweeping robot that drives the cleaning component to lift through multiple linkage components to avoid contact between the cleaning component and liquid contaminants, thereby solving the problem that the cleaning effect of the cleaning device is affected by liquid contaminants.

[0005] The purpose of this disclosure is achieved through the following technical solution:

[0006] A cleaning mechanism includes a cleaning component, the cleaning mechanism further comprising:

[0007] Connectors; and

[0008] A plurality of link assemblies are hinged to the connector, and the plurality of link assemblies are arranged circumferentially along the connector;

[0009] The cleaning member is connected to the connecting member, or to a portion of one of the linkage assemblies adjacent to the connecting member; the cleaning member can be lifted when at least one of the linkage assemblies is subjected to input torque.

[0010] In some embodiments, each of the linkage assemblies includes a plurality of sequentially hinged drive rods.

[0011] In some embodiments, each of the linkage assemblies includes a first drive rod and a second drive rod hinged together; a plurality of second drive rods are respectively hinged to the connector and arranged along the circumference of the connector;

[0012] The cleaning member is connected to the connecting member, or to a portion of one of the second drive rods adjacent to the cleaning member; the cleaning member can be lifted when at least one of the first drive rods inputs torque.

[0013] In some embodiments, the first end of the second drive rod of each linkage assembly is hinged to the corresponding first drive rod, the second end of the second drive rod of each linkage assembly is hinged to the connector, and the second ends of the plurality of second drive rods are arranged circumferentially along the connector.

[0014] In some embodiments, the number of the linkage assemblies is three, and the second drive rods of the three linkage assemblies are spaced apart circumferentially along the connector.

[0015] A cleaning device, comprising:

[0016] case;

[0017] The output shaft is disposed within the housing; and

[0018] In any of the above embodiments of the cleaning mechanism, one of the connecting rod assemblies is connected to the output shaft for transmission, and the remaining connecting rod assemblies are mounted on the housing.

[0019] Another cleaning device includes a housing, an output shaft, and a cleaning component, wherein the output shaft is disposed within the housing, and the cleaning device further includes a connector and multiple linkage assemblies;

[0020] Each of the connecting rod assemblies includes a first transmission rod and a second transmission rod. The first end of the second transmission rod of each connecting rod assembly is hinged to the first end of the corresponding first transmission rod. The second end of the second transmission rod of each connecting rod assembly is hinged to the connecting member. The second ends of the plurality of second transmission rods are arranged along the circumference of the connecting member.

[0021] One of the first transmission rods is provided with a torque input section, which is connected to the output shaft for transmission. The other first transmission rods are fixedly connected to the housing. The cleaning member is connected to the connecting member, or to a portion of one of the second transmission rods adjacent to the connecting member. The cleaning member can be lifted when torque is input at the torque input section.

[0022] In some embodiments, the housing is provided with a limiting portion for limiting the lifting stroke of the cleaning component.

[0023] In some embodiments, the housing is provided with a clearance hole, and one end of the cleaning member passes through the clearance hole.

[0024] A robotic vacuum cleaner includes the cleaning device described in any of the above embodiments.

[0025] Compared with the prior art, this disclosure has at least the following advantages:

[0026] At least one linkage assembly is used to input torque. After the torque is input by the at least one linkage assembly, the portions of each linkage assembly adjacent to the connecting member, as well as the connecting member, are raised or lowered. Since the cleaning component is connected to the connecting member, or to the portion of one of the linkage assemblies adjacent to the connecting member, the cleaning component can be raised when the torque is input by the at least one linkage assembly. This prevents the cleaning component from coming into contact with liquid contaminants, thereby avoiding adverse effects of liquid contaminants on the cleaning component and improving the cleaning effect of the cleaning component. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the cleaning mechanism in the cleaning position according to one embodiment;

[0029] Figure 2 for Figure 1 The diagram shown is a structural schematic of the cleaning mechanism in the retracted position.

[0030] Figure 3 This is a schematic diagram of the cleaning device in the cleaning position according to an embodiment;

[0031] Figure 4 for Figure 3 The diagram shown is a structural schematic of the cleaning device in the retracted position.

[0032] Figure 5 This is a schematic diagram of the cleaning device according to another embodiment;

[0033] Figure 6 for Figure 5 An enlarged schematic diagram of the cleaning device at point A;

[0034] Figure 7 for Figure 5 A partial cross-sectional view of the cleaning device shown.

[0035] Reference numerals: 10, cleaning device; 100, cleaning mechanism; 110, cleaning component; 120, connecting component; 130, connecting rod assembly; 131, first transmission rod; 131a, torque input part; 132, second transmission rod; 200, housing; 201, clearance hole; 300, output shaft; 400, outer swing arm; 500, overrunning clutch; 510, locking seat; 501, locking groove; 511, locking end; 512, releasing end; 520, rolling element; 600, connecting sleeve. Detailed Implementation

[0036] To facilitate understanding of this disclosure, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this disclosure are shown in the drawings. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide the reader with a more thorough and complete understanding.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0040] like Figure 1 As shown, this disclosure provides a cleaning mechanism 100, including a cleaning member 110, a connecting member 120, and a plurality of link assemblies 130 hinged to the connecting member 120, wherein the plurality of link assemblies 130 are arranged circumferentially along the connecting member 120. The cleaning member 110 has bristles for cleaning, and the cleaning member 110 is connected to the connecting member 120, or one of the link assemblies 130 is adjacent to a portion of the connecting member 120. The cleaning member 110 is liftable when at least one link assembly 130 is input torque.

[0041] In this disclosure, when the cleaning mechanism 100 is cleaning normally, the cleaning component 110 is in a position Figure 1The cleaning position is shown, at which point the cleaning component 110 is in contact with the surface to be cleaned. As the cleaning mechanism 100 is about to pass the liquid contaminant, at least one linkage assembly 130 inputs a first torque, causing the cleaning component 110 to rise to... Figure 2 The image shows the retracted position. When cleaning is required again using the cleaning component 110, the at least one linkage assembly 130 inputs a second torque opposite to the first torque, causing the cleaning component 110 to descend to the cleaning position. It can be understood that the end of the cleaning component 110 away from the connector 120 is a bristle bundle, which can effectively clean the surface to be cleaned.

[0042] In the aforementioned cleaning mechanism 100, at least one linkage assembly 130 is used to input torque. After the torque is input by the at least one linkage assembly 130, the portions of each linkage assembly 130 adjacent to the connecting member 120, as well as the connecting member 120, are raised or lowered. Since the cleaning member 110 is connected to the connecting member 120, or to the portion of one of the linkage assemblies 130 adjacent to the connecting member 120, the cleaning member 110 can be raised when the torque is input by the at least one linkage assembly 130, so as to avoid the cleaning member 110 from contacting liquid contaminants, thereby avoiding the adverse effects of liquid contaminants on the cleaning member 110 and improving the cleaning effect of the cleaning member 110.

[0043] like Figure 1 As shown, in some embodiments, each linkage assembly 130 includes a plurality of sequentially hinged drive rods. In this embodiment, when at least one linkage assembly 130 is subjected to torque, the plurality of drive rods of each linkage assembly 130 rotate relative to each other, causing the cleaning member 110 to rise and fall.

[0044] like Figure 1 and Figure 2 As shown, in some embodiments, each linkage assembly 130 includes a first drive rod 131 and a second drive rod 132 hinged together. A plurality of second drive rods 132 are respectively hinged to a connector 120 and arranged circumferentially along the connector 120. A cleaning member 110 is connected to the connector 120, or one of the second drive rods 132 is adjacent to a portion of the cleaning member 110. The cleaning member 110 is liftable when at least one first drive rod 131 receives torque. In this embodiment, when at least one linkage assembly 130 receives torque, the first drive rod 131 and the corresponding second drive rod 132 of each linkage assembly 130 move relative to each other, causing the cleaning member 110 to rise or fall.

[0045] like Figure 2As shown, in some embodiments, the first end of the second transmission rod 132 of each linkage assembly 130 is hinged to the corresponding first transmission rod 131, and the second end of the second transmission rod 132 of each linkage assembly 130 is hinged to the connector 120. The second ends of the plurality of second transmission rods 132 are arranged along the circumference of the connector 120, so that the two ends of the second transmission rod 132 are respectively used for transmission, reducing the ineffective size of the second transmission rod 132, improving the compactness of the second transmission rod 132, thereby improving the structural compactness of the sweeping device 10 and reducing the space occupied by the sweeping device 10.

[0046] like Figure 2 As shown, in some embodiments, the number of linkage assemblies 130 is three, and the second transmission rods 132 of the three linkage assemblies 130 are arranged circumferentially spaced along the connector 120, thereby improving the structural stability of the cleaning mechanism 100 with fewer linkage assemblies 130.

[0047] It is understood that the number of linkage assemblies 130 disclosed herein is multiple and is not limited to three. For example, in other embodiments, the number of linkage assemblies 130 may be 2, 4, 5, 6, 7, etc.

[0048] like Figure 3 As shown, this disclosure also provides a cleaning device 10, including a housing 200, an output shaft 300, and a cleaning mechanism 100 as described in any of the above embodiments. The output shaft 300 is disposed within the housing 200, with one linkage assembly 130 tractively connected to the output shaft 300, and the remaining linkage assemblies 130 mounted on the housing 200. The output shaft 300 drives one of the linkage assemblies 130 to move, causing the cleaning component 110 to rise and fall. When the output shaft 300 outputs a first torque, the cleaning component 110 rises to a retracted position. When the output shaft 300 outputs a second torque opposite to the first torque, the cleaning component 110 descends to a cleaning position.

[0049] In the aforementioned cleaning device 10, a linkage assembly 130 is used to input torque. After the linkage assembly 130 inputs torque, the portions of each linkage assembly 130 adjacent to the connecting member 120, as well as the connecting member 120, are raised or lowered. Since the cleaning member 110 is connected to the connecting member 120, or to the portion of one linkage assembly 130 adjacent to the connecting member 120, the cleaning member 110 can be raised when the linkage assembly 130 inputs torque. This prevents the cleaning member 110 from contacting liquid contaminants, thereby avoiding adverse effects of liquid contaminants on the cleaning member 110 and improving the cleaning effect of the cleaning member 110.

[0050] like Figure 3As shown, this embodiment of the present disclosure also provides another cleaning device 10, including a housing 200, an output shaft 300 and a cleaning component 110, wherein the output shaft 300 is disposed inside the housing 200.

[0051] like Figure 1 As shown, the cleaning device 10 further includes a connector 120 and multiple linkage assemblies 130. Each linkage assembly 130 includes a first transmission rod 131 and a second transmission rod 132. The first end of the second transmission rod 132 of each linkage assembly 130 is hinged to the first end of the corresponding first transmission rod 131, and the second end of the second transmission rod 132 of each linkage assembly 130 is hinged to the connector 120. The second ends of the multiple second transmission rods 132 are arranged circumferentially along the connector 120. When the output shaft 300 outputs a first torque, the cleaning member 110 is raised to the retracted position. When the output shaft 300 outputs a second torque opposite to the first torque, the cleaning member 110 is lowered to the cleaning position.

[0052] Preferably, the second ends of the plurality of second transmission rods 132 are arranged at equal intervals along the circumference of the connector 120.

[0053] like Figure 2 and Figure 3 As shown, one of the first transmission rods 131 is provided with a torque input section 131a, which is connected to the output shaft 300. The other first transmission rods 131 are fixedly connected to the housing 200. The cleaning member 110 is connected to the connecting member 120, or to a portion of one of the second transmission rods 132 adjacent to the connecting member 120. The cleaning member 110 can be lifted when torque is input to the torque input section 131a.

[0054] In the aforementioned cleaning device 10, a first transmission rod 131 is used to input torque. After the first transmission rod 131 inputs torque, the portions of each second transmission rod 132 adjacent to the connecting member 120, as well as the connecting member 120, are raised and lowered. Since the cleaning member 110 is connected to the connecting member 120, or to the portion of one of the second transmission rods 132 adjacent to the connecting member 120, the cleaning member 110 can be raised when the first transmission rod 131 inputs torque. This prevents the cleaning member 110 from contacting liquid contaminants, thereby avoiding adverse effects of liquid contaminants on the cleaning member 110 and improving the cleaning effect of the cleaning member 110. Moreover, the raising and lowering of the cleaning member 110 can be achieved with a single power source, simplifying the structure of the cleaning mechanism 100 and reducing the space occupied by the cleaning mechanism 100.

[0055] like Figure 4As shown, in some embodiments, the housing 200 is provided with a limiting portion (not shown) to limit the lifting stroke of the cleaning member 110. Further, the limiting portion (not shown) is provided with a limiting area (not shown), and the first transmission rod 131, which is tractively connected to the output shaft 300, is located within the limiting area, thereby limiting the swing stroke of the first transmission rod 131 and thus limiting the lifting stroke of the cleaning member 110.

[0056] like Figure 4 As shown, in some embodiments, the housing 200 is provided with a clearance hole 201, and one end of the cleaning member 110 passes through the clearance hole 201 to avoid the housing 200 interfering with the movement of the cleaning member 110.

[0057] This disclosure also provides a robotic vacuum cleaner, including the cleaning device 10 of any of the above embodiments.

[0058] like Figures 5 to 7 As shown, in some embodiments, the cleaning device 10 further includes an outer swing arm 400, an overrunning clutch 500, and a connecting sleeve 600. The overrunning clutch 500 includes a locking seat 510 and a rolling element 520. The locking seat 510 is fixedly connected to the outer swing arm 400 and has a locking groove 501 that gradually increases in size circumferentially, giving it a locking end 511 and a releasing end 512. The rolling element 520 is rotatably disposed within the locking groove 501. The rolling element 520 is locked at the locking end 511 and moves at the releasing end 512. The connecting sleeve 600 is fixedly connected to the housing 200 and also passes through the overrunning clutch 500 and is connected to the rolling element 520.

[0059] like Figure 6 As shown, further, when the connecting sleeve 600 rotates along the first direction A, it pushes the rolling element 520 to the locking end 511, locking the rolling element 520, thereby causing the overrunning clutch 500 to lock the rotation of the connecting sleeve 600 along the first direction A. When the rotational torque of the connecting sleeve 600 along the second direction B is less than the locking force of the rolling element 520, the connecting sleeve 600 cannot push the rolling element 520 from the locking end 511 to the releasing end 512, that is, it cannot unlock the rolling element 520, so the connecting sleeve 600 cannot rotate along the second direction B. When the rotational torque of the connecting sleeve 600 along the second direction B is greater than the locking force of the rolling element 520, the connecting sleeve 600 pushes the rolling element 520 to unlock and move it to the releasing end 512, so that the connecting sleeve 600 can rotate along the second direction B.

[0060] In this embodiment, when the cleaning component 110 is cleaning, the cleaning component 110, the housing 200, and the connecting sleeve 600 rotate synchronously along the second direction B. At this time, the rolling component 520 is at the loosened end 512, preventing the connecting sleeve 600 from locking in the second direction B. When the cleaning component 110 is lifted from the cleaning position to the retracted position, the output shaft 300 outputs a first torque, causing the first transmission rod 131 and the second transmission rod 132 to move relative to each other, thereby causing the cleaning component 110 to be lifted. When the cleaning component 110 is raised to the retracted position, the cleaning component 110 abuts against the housing 200 along the first direction A, causing the housing 200 and the connecting sleeve 600 to rotate synchronously along the first direction A. When the connecting sleeve 600 rotates along the first direction A, the connecting sleeve 600 pushes the rolling component 520 to the locking end 511, causing the rolling component 520 to lock at the locking end 511, thereby locking the connecting sleeve 600 and the housing 200 in the first direction A, that is, the connecting sleeve 600 locks immediately after a small stroke.

[0061] When the cleaning component 110 is lowered from the retracted position to the cleaning position, the output shaft 300 outputs a second torque opposite to the first torque, causing the first transmission rod 131 and the second transmission rod 132 to move relative to each other, thereby causing the cleaning component 110 to descend. When the cleaning component 110 descends to the cleaning position, it abuts against the housing 200 along the second direction B, causing the housing 200 and the connecting sleeve 600 to have torque along the second direction B. At this time, the torque of the connecting sleeve 600 along the second direction B is greater than the locking force of the rolling element 520, causing the rolling element 520 to unlock to the release end 512. After the rolling element 520 unlocks, the cleaning component 110, the housing 200, and the connecting sleeve 600 rotate synchronously along the second direction B to achieve the cleaning action.

[0062] It should be noted that the hinge described in any of the above embodiments refers to a hinged connection, and the hinge types that can be selected here include, but are not limited to, cylindrical hinges and spherical hinges. As one implementation method, cylindrical hinges are typically used when there is a gap between the hinged parts or when the hinged parts are made of elastically deformable materials. Spherical hinges are more suitable when the gap between the hinged parts is very small and the material is not easily deformable.

[0063] Compared with the prior art, this disclosure has at least the following advantages:

[0064] At least one linkage assembly 130 is used to input torque. After the torque is input by the at least one linkage assembly 130, the portions of each linkage assembly 130 adjacent to the connector 120, as well as the connector 120, are raised or lowered. Since the cleaning member 110 is connected to the connector 120, or to the portion of one of the linkage assemblies 130 adjacent to the connector 120, the cleaning member 110 can be raised when the torque is input by the at least one linkage assembly 130 to avoid contact between the cleaning member 110 and liquid contaminants, thereby avoiding adverse effects of liquid contaminants on the cleaning member 110 and improving the cleaning effect of the cleaning member 110.

[0065] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A cleaning mechanism, comprising a cleaning component (110), characterized in that, The cleaning mechanism also includes: Connector (120); and A plurality of link assemblies (130) are hinged to the connector (120), and the plurality of link assemblies (130) are arranged circumferentially along the connector (120); The cleaning member (110) is connected to the connecting member (120), or one of the linkage assemblies (130) is adjacent to the portion of the connecting member (120); the cleaning member (110) can be lifted when at least one of the linkage assemblies (130) is input torque.

2. The cleaning mechanism according to claim 1, characterized in that, Each of the link assemblies (130) includes a plurality of sequentially hinged transmission rods.

3. The cleaning mechanism according to claim 1, characterized in that, Each of the connecting rod assemblies (130) includes a first transmission rod (131) and a second transmission rod (132) that are hinged together; a plurality of second transmission rods (132) are respectively hinged to the connecting member (120) and arranged along the circumference of the connecting member (120); The cleaning member (110) is connected to the connecting member (120), or one of the second drive rods (132) is adjacent to the portion of the cleaning member (110); the cleaning member (110) can be lifted when at least one of the first drive rods (131) inputs torque.

4. The cleaning mechanism according to claim 3, characterized in that, The first end of the second transmission rod (132) of each of the connecting rod assemblies (130) is hinged to the corresponding first transmission rod (131), and the second end of the second transmission rod (132) of each of the connecting rod assemblies (130) is hinged to the connector (120). The second ends of the plurality of second transmission rods (132) are arranged along the circumference of the connector (120).

5. The cleaning mechanism according to claim 3, characterized in that, The number of the linkage assembly (130) is three, and the second transmission rods (132) of the three linkage assemblies (130) are arranged at circumferential intervals along the connector (120).

6. A cleaning device, characterized in that, include: Casing (200); An output shaft (300) is disposed within the housing (200); as well as The cleaning mechanism according to any one of claims 1 to 5, wherein one of the connecting rod assemblies (130) is drively connected to the output shaft (300), and the remaining connecting rod assemblies (130) are mounted on the housing (200).

7. A cleaning device, comprising a housing (200), an output shaft (300), and a cleaning component (110), wherein the output shaft (300) is disposed within the housing (200), characterized in that, The cleaning device also includes a connector (120) and multiple linkage assemblies (130); Each of the connecting rod assemblies (130) includes a first transmission rod (131) and a second transmission rod (132). The first end of the second transmission rod (132) of each of the connecting rod assemblies (130) is hinged to the first end of the corresponding first transmission rod (131). The second end of the second transmission rod (132) of each of the connecting rod assemblies (130) is hinged to the connector (120). The second ends of the plurality of second transmission rods (132) are arranged along the circumference of the connector (120). One of the first transmission rods (131) is provided with a torque input section (131a), which is connected to the output shaft (300) for transmission. The other first transmission rods (131) are fixedly connected to the housing (200). The cleaning member (110) is connected to the connecting member (120), or one of the second transmission rods (132) is adjacent to the connecting member (120). The cleaning member (110) can be lifted when the torque is input to the torque input section (131a).

8. The cleaning device according to claim 6 or 7, characterized in that, The housing (200) is provided with a limiting part, which is used to limit the lifting stroke of the cleaning component (110).

9. The cleaning device according to claim 6 or 7, characterized in that, The housing (200) is provided with a clearance hole (201), and one end of the cleaning member (110) passes through the clearance hole (201).

10. A sweeping robot, characterized in that, The cleaning device includes any one of claims 6 to 9.

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