Robot Vacuum Cleaner

Abstract

The present application relates to a sweeping robot, which comprises a housing; a roller brush mechanism, which is mounted on the housing, and the roller brush mechanism comprises a housing, which has a roller brush cavity; a roller brush assembly, which is arranged in the roller brush cavity; a roller brush driving assembly, which is mounted on the outside of the housing, and comprises a roller brush motor; wherein the axis of the roller brush motor has a first point on a section perpendicular to the axis of the roller brush assembly, and the axis of the roller brush assembly has a second point on a section perpendicular to it, the first point and the second point are located in the same section and connected to form a first connecting line, the angle between the first connecting line and the first plane ranges from 0 degrees to 35 degrees, the outer peripheral surface of the roller brush assembly forms a rolling surface, the first plane is tangent to the rolling surface, and is parallel to the moving direction of the sweeping robot. The sweeping robot provided by the present application will not squeeze the space above the housing, the space in front of the housing, and the space behind the housing too much, and the roller brush driving assembly is reasonably placed relative to the housing, which reduces the internal space occupied by the sweeping robot.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a sweeping robot. Background Art

[0002] A sweeping robot is a type of smart home appliance that can automatically clean the floor in the room with a certain level of artificial intelligence.

[0003] The sweeping robot collects dust on the ground through a vacuum system. Generally, the vacuum system includes a roller brush mechanism, which includes a shell, a roller brush assembly and a roller brush drive assembly. The roller brush assembly is arranged in the shell, and the roller brush drive assembly is installed in the shell to drive the roller brush assembly to rotate, so as to drive the dust to be adsorbed and cleaned.

[0004] However, the traditional roller brush drive assembly is not properly placed relative to the housing, resulting in a large internal space being occupied by the sweeping robot. Summary of the invention

[0005] Based on this, it is necessary to provide a sweeping robot that can reasonably place the roller brush drive assembly to reduce the space occupied inside the sweeping robot, in order to address the problem that the traditional roller brush drive assembly is placed unreasonable relative to the shell, resulting in a large space occupied inside the sweeping robot.

[0006] The present application provides a sweeping robot, comprising a housing and a roller brush mechanism (20) mounted on the housing, wherein the roller brush mechanism comprises:

[0007] A housing having a roller brush cavity;

[0008] A roller brush assembly is arranged in the roller brush cavity;

[0009] A roller brush driving assembly is installed on the outer side of the housing, and the roller brush driving assembly includes a roller brush motor, and the roller brush motor is used to provide a driving force to rotate the roller brush assembly;

[0010] The axis of the roller brush motor has a first point on a cross section perpendicular to the axis of the roller brush assembly, and the axis of the roller brush assembly has a second point on a cross section perpendicular to the axis of the roller brush assembly. The first point and the second point are located in the same cross section and are connected to form a first connecting line. The angle between the first connecting line and the first plane is in the range of 0 to 35 degrees.

[0011] The outer peripheral surface of the roller brush assembly forms a rolling surface, and the first plane is tangent to the rolling surface and parallel to the moving direction of the sweeping robot.

[0012] The above-mentioned sweeping robot, by setting the angle between the first connecting line and the first plane to be in the range of 0 to 35 degrees, is placed in a reasonable position, which will not over-compress the space above the shell, and if the roller brush motor is located in front of the shell, it will not over-compress the space in front of the shell along the moving direction of the sweeping robot, and if the roller brush motor is located behind the shell, it will not over-compress the space behind the shell along the moving direction of the sweeping robot. Therefore, in the sweeping robot of the present application, the roller brush drive assembly is reasonably placed relative to the shell, which reduces the internal space occupied by the sweeping robot.

[0013] In one embodiment, the angle between the first connecting line and the first plane is not less than 5 degrees, so as to prevent the roller brush drive assembly from protruding from the bottom cover of the housing and affecting the dust collection effect.

[0014] In one embodiment, the angle between the first connecting line and the first plane is 30 degrees, so that the roller brush drive assembly is properly placed, and there is sufficient space above the shell and in front and behind the shell along the moving direction of the sweeping robot.

[0015] In one embodiment, the roller brush driving assembly further comprises a reduction box, the reduction box comprises a box body and a transmission assembly arranged in the box body, the box body is mounted on the housing, and the transmission assembly is transmission-connected between the roller brush motor and the roller brush assembly;

[0016] The box body is located on the inner side of the housing along the first direction;

[0017] The first direction, the axis of the roller brush assembly and the moving direction of the sweeping robot are perpendicular to each other, so as to ensure that the roller brush driving assembly cannot protrude from the bottom surface of the housing and does not affect the dust collection effect.

[0018] In one embodiment, the housing includes a fixed shell, the roller brush mechanism is located in the fixed shell, and the shell is movably connected to the fixed shell;

[0019] The fixed housing is recessed inward to form a bottom-closed floating cavity, and the roller brush motor is configured to extend into the floating cavity and move. The roller brush motor can be limited to move only in the floating cavity and not extend out of the floating cavity, thereby avoiding the influence on the position of the main control board, for example.

[0020] In one embodiment, the roller brush assembly has a roller brush shaft, the roller brush motor has an output shaft, and the roller brush shaft is arranged in parallel with the output shaft, which can simplify the transmission structure of the roller brush motor transmitting the rotational force to the roller brush assembly, thereby making the structure of the roller brush mechanism more compact and improving the internal space utilization rate of the sweeping robot.

[0021] In one embodiment, the roller brush motor is located in front of the housing along the travel direction of the sweeping robot. The roller brush motor placed in front of the housing does not interfere with the position of the cliff assembly also located in the front, and provides sufficient space for the driving wheel assembly behind the housing.

[0022] In one embodiment, the cleaning robot further includes a driving wheel assembly, the driving wheel assembly is mounted on the housing, the driving wheel assembly includes a driving wheel and a driving motor, and the driving motor is used to provide a driving force for the driving wheel to rotate;

[0023] The driving wheel is located between the housing and the driving wheel along the traveling direction of the sweeping robot. There is no position conflict between the roller brush motor and the driving wheel motor. The front placement of the driving wheel motor is more conducive to dust collection, improves the obstacle crossing capability of the driving wheel, and provides the sweeping robot with appropriate counterweight in front of the driving wheel, so that the sweeping robot has even counterweight in the front and rear directions of the driving wheel.

[0024] In one embodiment, the sweeping robot further comprises a dust box, which is mounted on the housing and communicates with the roller brush cavity;

[0025] The dust box and the roller brush motor are located on both sides of the housing along the moving direction of the sweeping robot, so as to avoid the position interference between the two and increase the volume of the dust box.

[0026] In one of the embodiments, the roller brush motor at least partially overlaps with the housing in a first direction;

[0027] The first direction, the axis of the roller brush assembly and the moving direction of the sweeping robot are perpendicular to each other, so that the distance between the housing and the roller brush motor can be shortened, making the roller brush mechanism structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural diagram of a part of the structure of a sweeping robot in an embodiment of the present application;

[0029] Figure 2 A schematic structural diagram of a roller brush mechanism in an embodiment of the present application is shown;

[0030] Figure 3 Shows Figure 2 A schematic structural diagram of a side view of a roller brush mechanism shown;

[0031] Figure 4 Shows Figure 2 A schematic structural diagram of the roller brush mechanism shown in a side view from another angle;

[0032] Figure 5Shows Figure 1 The schematic diagram of the structure of the sweeping robot from a side view is shown as a partial structure. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0041] Figure 1 A three-dimensional structural diagram showing a partial structure of a sweeping robot in an embodiment of the present application is shown. Figure 2 The figure shows a schematic diagram of the structure of the roller brush mechanism in an embodiment of the present application. For the convenience of description, the figure only shows the structure related to the embodiment of the present application.

[0042] Referring to the drawings, an embodiment of the present application provides a sweeping robot 100, including a housing 10 and a roller brush mechanism 20 mounted on the housing 10. Specifically, the housing 10 includes an upper housing component, a lower housing and a bottom cover, and the upper housing component, the lower housing and the bottom cover are surrounded to form an installation cavity to install components of the sweeping robot 100, such as a dust collection component, a mopping component, a main controller and a battery. It should be pointed out that for ease of understanding, Figure 1Only the structure of the bottom cover of the housing 10 is shown to reveal the roller brush mechanism 20 .

[0043] The roller brush mechanism 20 includes a housing 21, a roller brush assembly (not shown) and a roller brush driving assembly 22. The housing 21 has a roller brush cavity 211. The roller brush assembly is arranged in the roller brush cavity 211. The roller brush driving assembly 22 is installed on the outside of the housing 21. The roller brush driving assembly 22 includes a roller brush motor 221. The roller brush motor 221 is used to provide a driving force to rotate the roller brush assembly. As a part of the dust collection assembly of the sweeping robot 100, the roller brush assembly can use the roller brush to bring the ground dust into the roller brush cavity 211 and then into the dust box, thereby completing the function of cleaning the ground.

[0044] In the embodiment of the present application, the roller brush drive assembly 22 further includes a reduction box 222, such as Figure 3 As shown, the reduction box 222 includes a box body 2221 and a transmission assembly disposed in the box body 2221. The box body 2221 is mounted on the housing 21. The transmission assembly is transmission-connected between the roller brush motor 221 and the roller brush assembly. More specifically, the transmission assembly includes a gear set.

[0045] like Figure 4 As shown, the axis of the roller brush motor 221 has a first point A on a section perpendicular to the axis of the roller brush assembly, and the axis of the roller brush assembly has a second point B on a section perpendicular to the axis of the roller brush assembly. The first point A and the second point B are located in the same section and connected to form a first connecting line AB. The angle α between the first connecting line AB and the first plane ranges from 0 degrees to 35 degrees. The outer peripheral surface of the roller brush assembly forms a rolling surface. The first plane is tangent to the rolling surface and is parallel to the moving direction of the sweeping robot 100. It should be pointed out that Figure 2 Point B of the middle reduction box 222 refers to the gear shaft connected to the rotating shaft of the roller brush assembly, which coincides with the axis of the roller brush assembly of the present application.

[0046] In this way, by setting the angle α between the first connecting line AB and the first plane to be in the range of 0 to 35 degrees, the placement position is reasonable, and the space above the housing 21 will not be squeezed too much. If the roller brush motor 221 is located in front of the housing 21, the space in front of the housing 21 along the travel direction of the sweeping robot 100 will not be squeezed too much. If the roller brush motor 221 is located behind the housing 21, the space behind the housing 21 along the travel direction of the sweeping robot 100 will not be squeezed too much. Therefore, in the sweeping robot 100 of the present application, the roller brush drive assembly 22 is reasonably placed relative to the housing 21, which reduces the internal space occupied by the sweeping robot.

[0047] Specifically in the embodiment of the present application, the roller brush assembly has a roller brush shaft, the roller brush motor 221 has an output shaft, and the roller brush shaft is arranged in parallel with the output shaft. The transmission structure for transmitting the rotational force from the roller brush motor 221 to the roller brush assembly can be simplified, thereby making the structure of the roller brush mechanism 20 more compact and the internal space utilization rate of the sweeping robot 100 higher.

[0048] In some embodiments, the sweeping robot 100 further includes a dust box, which is mounted on the housing 10, and is connected to the roller brush chamber. The dust box and the roller brush motor 221 are located on both sides of the housing 21 along the travel direction of the sweeping robot 100. If the dust box and the roller brush motor 221 are located on the same side of the housing 21, the dust box needs to provide an escape space to avoid the roller brush motor 221, which will result in a reduction in the volume of the dust box. Therefore, the dust box and the roller brush motor 221 are located on both sides of the housing 21, which can avoid interference between the positions of the two and increase the volume of the dust box.

[0049] like Figure 5 As shown, in some embodiments, the roller brush motor 221 is located in front of the housing 21 along the traveling direction of the cleaning robot 100. Based on the rationality of placing the roller brush motor 221 relative to the housing 21 in the present application, the roller brush motor 221 placed in front of the housing 21 will not interfere with the position of the cliff assembly also located in the front, and provides sufficient space for the driving wheel assembly 30 behind the housing 21.

[0050] Please refer again Figure 1 Specifically, the cleaning robot 100 further includes a driving wheel assembly 30, which is mounted on the housing 10. The driving wheel assembly 30 includes a driving wheel 31 and a driving wheel motor 32. The driving wheel motor 32 is used to provide a driving force to rotate the driving wheel 31. Please refer to Figure 5 , the driving wheel motor 32 is located between the housing 21 and the driving wheel 32 along the traveling direction of the sweeping robot. Therefore, there will be no position conflict between the roller brush motor 221 and the driving wheel motor 32. The front placement of the driving wheel motor 32 can also be more conducive to dust collection, improve the obstacle crossing ability of the driving wheel 31, and provide the sweeping robot 100 with appropriate counterweight in front of the driving wheel 31, so that the counterweight of the sweeping robot 100 in the front and rear directions of the driving wheel 31 is uniform. Therefore, placing the roller brush motor 221 in front of the housing 21 can make the components of the sweeping robot 100 more reasonably arranged and make better use of the space of the sweeping robot 100.

[0051] In some embodiments, the roller brush motor 221 and the housing 21 at least partially overlap in the first direction, wherein the first direction, the axis of the roller brush assembly, and the travel direction of the sweeping robot are perpendicular to each other. In this way, the distance between the housing 21 and the roller brush motor 221 can be shortened, making the roller brush mechanism 20 more compact. Specifically, the first direction is a vertical direction.

[0052] In some embodiments, the housing 10 also includes a fixed shell, the roller brush mechanism 20 is located in the fixed shell, and the shell 21 is movably connected to the fixed shell, the fixed shell is recessed inward to form a floating cavity with a closed bottom, and the roller brush motor 221 is constructed to be able to extend into the floating cavity and move.

[0053] In the conventional technology, since the roller brush motor 221 squeezes the space above the shell 21, in order to prevent the fixed shell from being too high and affecting the positions of other components within a limited height, a through hole is usually opened above the fixed shell so that the roller brush motor 221 can extend from the through hole and move outside the floating cavity. However, based on the rationality of placing the roller brush motor 221 relative to the shell 21 in the present application, the height of the roller brush motor 221 is reduced to a certain extent. Therefore, the bottom of the floating cavity can be closed to limit the roller brush motor 221 to move only within the floating cavity, and not extend out of the floating cavity, thereby avoiding the impact on the position of, for example, the main control board.

[0054] In some embodiments, an angle α between the first line AB and the first plane is not less than 5 degrees.

[0055] The inventor has found that if the angle is too small, the roller brush drive assembly 22 may protrude from the bottom surface of the housing 10, which will further raise the distance between the cleaning robot 100 and the ground, which is not conducive to dust collection. Therefore, the angle α between the first connecting line AB and the first plane is designed to be not less than 5 degrees, which can prevent the roller brush drive assembly 22 from protruding from the bottom cover of the housing 10 and affecting the dust collection effect.

[0056] Please refer again Figure 3 In other embodiments, the minimum angle of the angle α between the first line AB and the first plane can also be determined by using the fact that the box body 2221 is located on the inner side of the housing 10 along the first direction. Specifically, the outer contour line of the box body 2221 is located above the bottom surface of the housing 10 along the vertical direction. Specifically, the bottom surface of the housing 10 refers to the bottom surface of the bottom cover. It should also be pointed out that the box body 2221 is located on the inner side of the housing 10 along the first direction, which includes an implementation method in which the lowest point of the box body 2221 along the first direction coincides with the bottom surface of the housing 10.

[0057] In an embodiment of the present application, the box body 2221 includes a box body 2222 and at least two connecting lugs 2223, and the at least two connecting lugs 2223 are arranged at intervals along the outer periphery of the box body 2222. The box body 2221 is installed on the shell 21 through the connecting lugs 2223. The outer contour line of the connecting lugs 2223 is located on the inner side of the casing 10 along the first direction, and the minimum angle of the angle α between the first connecting line AB and the first plane can be determined.

[0058] In a preferred embodiment of the present application, the angle α between the first line AB and the first plane is 30 degrees. In this way, the roller brush drive assembly 22 is properly placed, and there is sufficient space above the housing 21 and in front and behind the housing 21 along the moving direction of the sweeping robot 100.

[0059] The cleaning robot 100 provided in the embodiment of the present application has the following beneficial effects:

[0060] By setting the angle α between the first connecting line AB and the first plane to be in the range of 0 to 35 degrees, the placement position is reasonable, and the space above the housing 21 will not be squeezed too much. If the roller brush motor 221 is located in front of the housing 21, the space in front of the housing 21 along the travel direction of the sweeping robot 100 will not be squeezed too much. If the roller brush motor 221 is located behind the housing 21, the space behind the housing 21 along the travel direction of the sweeping robot 100 will not be squeezed too much. Therefore, in the sweeping robot 100 of the present application, the roller brush drive assembly 22 is reasonably placed relative to the housing 21, which reduces the internal space occupied by the sweeping robot.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A sweeping robot (100), characterized in that: The invention comprises a housing (10) and a roller brush mechanism (20) mounted on the housing (10), wherein the roller brush mechanism (20) comprises: The housing (21) has a rolling brush chamber (211); A rolling brush assembly is arranged in the rolling brush chamber (211); A roller brush driving assembly (22) is mounted on the outside of the housing (21), the roller brush driving assembly (22) comprising a roller brush motor (221), the roller brush motor (221) being used to provide a driving force for rotating the roller brush assembly; the roller brush motor (221) is located in front of the housing (21) along the travel direction of the sweeping robot; The axis of the roller brush motor (221) has a first point (A) on a cross section perpendicular to the axis of the roller brush assembly, and the axis of the roller brush assembly has a second point (B) on a cross section perpendicular to the axis of the roller brush assembly, the first point (A) and the second point (B) are located in the same cross section and are connected to form a first connecting line (AB), and the angle (α) between the first connecting line (AB) and the first plane is in the range of 0 degrees to 35 degrees; The outer peripheral surface of the rolling brush assembly forms a rolling surface, and the first plane is tangent to the rolling surface and parallel to the moving direction of the sweeping robot; a driving wheel assembly (30), the driving wheel assembly (30) being mounted on the housing (10), the driving wheel assembly (30) comprising a driving wheel (31) and a driving wheel motor (32), the driving wheel motor (32) being used to provide a driving force for the driving wheel (31) to rotate; The driving wheel motor (32) is located between the housing (21) and the driving wheel (31) along the moving direction of the cleaning robot (100).

2. The cleaning robot (100) according to claim 1, characterized in that: The angle (α) between the first connecting line (AB) and the first plane is not less than 5 degrees.

3. The cleaning robot (100) according to claim 2, characterized in that: The included angle (α) between the first connecting line (AB) and the first plane is 30 degrees.

4. The cleaning robot (100) according to claim 1, characterized in that: The roller brush driving assembly (22) further comprises a reduction box (222), the reduction box (222) comprising a box body (2221) and a transmission assembly arranged in the box body (2221), the box body (2221) being mounted on the housing (21), and the transmission assembly being transmission-connected between the roller brush motor (221) and the roller brush assembly; The box body (2221) is located on the inner side of the housing (10) along the first direction; Wherein, the first direction, the axis of the roller brush assembly and the moving direction of the sweeping robot are perpendicular to each other.

5. The cleaning robot (100) according to claim 1, characterized in that: The housing (10) comprises a fixed shell, the roller brush mechanism (20) is located in the fixed shell, and the shell (21) is movably connected to the fixed shell; The fixed shell is recessed inwardly to form a floating cavity with a closed bottom, and the roller brush motor (221) is constructed to be able to extend into the floating cavity and move.

6. The cleaning robot (100) according to claim 1, characterized in that: The roller brush assembly has a roller brush rotating shaft, and the roller brush motor (221) has an output shaft, and the roller brush rotating shaft is arranged in parallel with the output shaft.

7. The cleaning robot (100) according to claim 1, characterized in that: The sweeping robot (100) further comprises a dust collection box, the dust collection box being mounted on the housing (10), and the dust collection box being in communication with the rolling brush chamber (211); The dust collection box and the roller brush motor (221) are located on both sides of the housing (21) along the moving direction of the sweeping robot (100).

8. The cleaning robot (100) according to claim 1, characterized in that: The roller brush motor (221) at least partially overlaps with the housing (21) in a first direction; Wherein, the first direction, the axis of the roller brush assembly and the moving direction of the sweeping robot (100) are perpendicular to each other.

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