Shielding structure and cleaning robot

Abstract

The utility model relates to the technical field of cleaning equipment, and provides a shielding structure and a cleaning robot, which comprise a support part, a shielding layer and a driving unit. The support part is arranged at an opening position of a cleaning unit of the cleaning robot, the shielding layer is connected to the support part, and the driving unit is connected with the support part to drive the support part to be switched between a first position state and a second position state. According to the scheme, through the combined design of the support part and the shielding layer, the cleaning unit can be effectively shielded when the robot passes through an area which does not need to be cleaned, and the situation that the cleaning unit secondarily pollutes the ground or interferes with objects on the ground is prevented. When the floor is cleaned, the shielding layer can be folded, so that the cleaning unit can work normally, and when the floor passes through an area which does not need to be cleaned, the shielding layer is unfolded, so that the area which does not need to be cleaned and the cleaning unit are protected. Meanwhile, the occupied space is smaller after the folding structure is folded, and miniaturization of the cleaning robot is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a shielding structure and a cleaning robot. Background Technology

[0002] Current cleaning robots are generally equipped with active cleaning components (cleaning parts), such as microfiber mops and rotating brushes, to achieve sweeping and mopping in one step or deep cleaning. These cleaning components need to remain in contact with the ground during operation.

[0003] However, some areas do not require cleaning, and the cleaning components themselves may contaminate these areas or interfere with them (e.g., brush bristles get caught in carpets or crevices). Therefore, the cleaning components need to be shielded when the cleaning robot passes through areas that do not require cleaning. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to propose a shielding structure and a cleaning robot that can shield the cleaning components.

[0005] To achieve the above and other related objectives, this utility model provides a shielding structure, the shielding structure comprising:

[0006] The support unit is located at the opening of the cleaning unit of the cleaning robot;

[0007] A shielding layer, connected to the support portion;

[0008] A drive unit, connected to the bracket portion, drives the bracket portion to switch between the following position states.

[0009] In the first position state, in response to the support portion being in the first position state, the shielding layer unfolds to cover the opening position.

[0010] In the second position state, in response to the bracket being in the second position state, the shielding layer folds to avoid the opening position.

[0011] In one specific embodiment of this utility model, the support portion includes multiple connecting rods, which are interconnected to form a multi-link structure. At least one connecting rod is connected to the driving unit to drive the multi-link structure to move. In response to the support portion being in a first position, the rigid support surface formed by the multi-link structure blocks the opening position. In response to the support portion being in a second position, the multi-link structure avoids the opening position.

[0012] In one specific embodiment of this utility model, the support portion includes a first rod and a second rod, one end of the first rod and one end of the second rod are hinged together by a first hinge axis, and the driving unit is connected to the second rod to drive the second rod to rotate around the first hinge axis to unfold or fold the shielding layer in a fan shape.

[0013] In one specific embodiment of this utility model, the support portion includes:

[0014] The first member is fixedly installed;

[0015] The second member, one end of which is hinged to one end of the first member via a first hinge axis;

[0016] The third member is hinged at one end to the first hinge shaft. In response to the bracket being in the first position, the third member is located between the first member and the second member.

[0017] The fourth member has one end hinged to the third member via the second hinge axis;

[0018] A slider is disposed on the fourth rod, the sliding direction of the slider is the length direction of the fourth rod, and the slider is hinged to the end of the second rod away from the first hinge axis.

[0019] In one specific embodiment of this utility model, the second hinge shaft is located at the middle of the length direction of the third rod.

[0020] In one specific embodiment of the present invention, in response to the bracket portion being in the second position state, the first rod and the second rod overlap in the axial direction of the first hinge axis.

[0021] In one specific embodiment of this utility model, the first rod is fixedly disposed at the edge of one side of the opening of the cleaning unit.

[0022] In one specific embodiment of the present invention, the shielding layer includes multiple folded areas. In response to the bracket being in a first position, the boundaries of the multiple folded areas correspond to the positions of the connecting rods, and at least one of the folded areas is independently set with respect to the other folded areas.

[0023] In one specific embodiment of this utility model, a support portion is provided on the bracket portion, and the support portion supports the shielding layer in response to the bracket portion being in a first position state.

[0024] In one specific embodiment of this utility model, the support part includes a plurality of support rods, which are connected to the same hinge axis between the connecting rods, and the plurality of support rods are assembled to be able to fan out at certain angular intervals.

[0025] In one specific embodiment of this utility model, a set of support portions are provided on each hinge axis between the connecting rods.

[0026] In one specific embodiment of this utility model, the shielding layer is a flexible curtain structure.

[0027] This utility model also proposes a cleaning robot, comprising:

[0028] cavity;

[0029] A cleaning unit is disposed within the cavity;

[0030] An opening is formed in the cavity, and the opening is located directly below the cleaning unit;

[0031] A shielding structure is provided at the opening, and the shielding structure is the aforementioned shielding structure.

[0032] In one specific embodiment of this utility model, the shielding structure is provided in two sets symmetrically at the opening.

[0033] In one specific embodiment of this utility model, the driving units of the two sets of shielding structures are located at the edge of the opening on the same side, and the driving units of the two sets of shielding structures are located at the middle of the length direction of the opening edge.

[0034] In one specific embodiment of the present invention, in response to the bracket portion being in the second position state, the shielding structure is located at the front edge of the opening in the direction of movement of the cleaning robot.

[0035] The technical advantages of this invention are as follows: The combined design of the support unit and the shielding layer effectively shields the cleaning unit when the robot passes through areas that do not require cleaning, preventing secondary contamination of the ground or interference with objects on the ground. The introduction of the drive unit allows the support unit and the shielding layer to easily switch between a first position and a second position. When cleaning the ground, the shielding layer can be retracted, allowing the cleaning unit to operate normally; when passing through areas that do not require cleaning, the shielding layer unfolds, protecting both the area and the cleaning unit. Furthermore, the folding structure occupies less space when retracted, contributing to the miniaturization of the cleaning robot. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram showing the position of the shielding structure of the present invention installed on a cleaning robot in one embodiment;

[0038] Figure 2 This is a schematic diagram of the shielding structure in one embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the support portion of the shielding structure in a first position state in one embodiment of the present invention, wherein the dashed lines represent the movement trajectories of each component of the shielding structure.

[0040] Figure 4 This is a schematic diagram of the support portion of the shielding structure in a second position state in one embodiment of the present invention, where the dashed lines represent the movement trajectories of each component of the shielding structure.

[0041] Explanation of reference numerals in the attached drawings: 1. Cleaning unit; 2. Cavity; 3. Opening; 10. Support section; 11. First rod; 12. Second rod; 13. Third rod; 131. Head section; 132. Tail section; 14. Fourth rod; 15. Slider; 16. First hinge shaft; 17. Second hinge shaft; 18. Slide groove; 20. Shielding layer; 30. Drive unit; 40. Support section; 41. First support rod; 42. Second support rod. Detailed Implementation

[0042] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0043] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0044] Existing cleaning robot technology has made significant progress in design and functionality, providing users with convenient cleaning services. These robots are typically equipped with water-absorbing cleaning components, such as the combination of microfiber mops and water-permeable systems used in floor mopping robots to achieve wet cleaning. This design is particularly effective when cleaning hard floors, effectively removing stains and bacteria.

[0045] However, many homes have large carpet areas that significantly impact the aesthetics and comfort of the home environment. Existing cleaning robots present certain problems when cleaning carpets. Because the cleaning components on these robots typically have a high water content, they may release moisture as the robot passes over the carpet, causing it to become wet. Carpets are prone to mold growth in damp environments, which not only affects their lifespan but can also pose a threat to the health of family members, as mold can produce allergens and harmful substances.

[0046] Furthermore, some cleaning robot cover mechanisms have limitations. For example, some cover mechanisms, due to their design, can only be used with specific types of cleaning items; such as roller-flipping baffles, which are only suitable for cylindrical cleaning items, i.e., roller mops. This limits the application of cover mechanisms in different cleaning items and different home environments.

[0047] Therefore, a more effective and flexible solution is needed to protect carpets from getting wet while ensuring cleaning effectiveness and user health. This led to the proposal of this utility model, which aims to provide a novel shielding structure to solve the problems in the prior art and improve the applicability of cleaning robots in different environments and the user experience.

[0048] like Figure 1-4 As shown, this utility model provides a shielding structure for shielding the cleaning unit 1 of a cleaning robot. The shielding structure includes a support 10, a shielding layer 20, and a drive unit 30.

[0049] like Figure 1 As shown, the support portion 10 is positioned at the opening 3 of the cleaning unit 1. The support portion 10 is the core of the shielding structure; its main function is to support the entire shielding structure and ensure that the shielding layer 20 effectively shields the opening 3 of the cleaning unit 1 (i.e., below the cleaning unit 1). The unfolding and folding states of the shielding layer 20 can be controlled by adjusting the support portion 10. The support portion 10 can be a linkage structure.

[0050] The linkage structure is similar to the design of a robotic arm. The support part 10 is connected by multiple linkages, and its position can be flexibly adjusted according to needs. Other structures, such as slide rail structures and spring structures, can also achieve similar support functions. In this utility model, a linkage structure is specifically selected as the support part 10. At least one linkage in the linkage structure is connected to the drive unit 30 to drive the multi-link structure to move. In response to the support part 10 being in a first position, the rigid support surface formed by the multi-link structure covers the opening 3. In response to the support part 10 being in a second position, the multi-link structure avoids the opening. The multi-link structure is connected to the shielding layer 20, so that the shielding layer 20 can be unfolded and folded with the multi-link structure. The rigid support surface formed by the unfolding of the multi-link allows the shielding layer 20 on it to form a flat shielding surface, avoiding the sagging problem of the flexible shielding layer 20.

[0051] The shielding layer 20 is connected to the support portion 10. The main function of the shielding layer 20 is to cover the opening 3 of the cleaning unit 1, preventing the cleaning unit 1 from releasing moisture when it comes into contact with sensitive surfaces (such as carpets or fabrics), thus preventing unnecessary moisture buildup. It unfolds or folds depending on the state of the support portion 10. The shielding layer 20 can have different structural designs; in this invention, a flexible curtain structure (specifically, a fabric curtain) is used, meaning that the shielding layer 20 is made of soft, flexible material, allowing for flexible unfolding and folding. Its design is more adaptable to different working environments, allowing for quick raising or lowering as needed. The shielding layer 20 can also be composed of multiple folded ribs. This structure provides a certain degree of rigidity when unfolded.

[0052] like Figure 1 As shown, the drive unit 30 is connected to the support portion 10 and is responsible for controlling the movement of the support portion 10, thereby adjusting the unfolding and folding of the shielding layer 20. The drive unit 30 enables the shielding layer 20 to switch between a first position state (shielding layer 20 unfolded, covering opening 3) and a second position state (shielding layer 20 folded, avoiding opening 3). The drive unit 30 can achieve the position switching of the support portion 10 through electric motors, servo motors, springs, pneumatic components, etc. For example, an electric motor can precisely control the movement of the shielding layer 20 according to a set program or sensor feedback, ensuring that it can flexibly cover the opening 3 during cleaning and prevent moisture leakage.

[0053] like Figure 3 As shown, when the support portion 10 is in the first position, the shielding layer 20 unfolds, completely covering the opening 3 of the cleaning unit 1. At this time, moisture below the cleaning unit 1 will not leak and contaminate floor areas that do not need cleaning (such as carpets).

[0054] like Figure 4As shown, when the support portion 10 is in the second position, the shielding layer 20 folds to avoid the opening 3 of the cleaning unit 1. In this way, the cleaning robot can continue its cleaning work without the shielding layer 20 obstructing the cleaning process.

[0055] Example 1, as Figure 3 As shown, the support portion 10 includes a first rod 11 and a second rod 12. One end of the first rod 11 and one end of the second rod 12 are hinged together by a first hinge axis 16. The first rod 11 can be considered as part of the support structure and is fixed to one side of the cleaning unit 1 or the frame of the cleaning robot. The second rod 12 is connected to the first rod 11 and is used to drive the unfolding and folding of the shielding layer 20. The change in the position and angle of the second rod 12 determines the state (unfolded or folded) of the shielding layer 20. The drive unit 30 is connected to the second rod 12 to drive the second rod 12 to rotate around the first hinge axis 16 to unfold or fold the shielding layer 20 in a fan shape. When the drive unit 30 starts working, the second rod 12 rotates around the first hinge axis 16. When the drive unit 30 pushes the second rod 12 to rotate counterclockwise, the shielding layer 20 opens as the support portion 10 unfolds, shielding the opening 3 of the cleaning unit 1. When the drive unit 30 pushes the second rod 12 to rotate clockwise, the shielding layer 20 retracts to avoid obstructing the opening 3 of the cleaning unit 1. Since the support part 10 consists of two rods, the unfolding process of the shielding layer 20 is similar to the unfolding process of a folding fan.

[0056] With this support unit 10 design, the shielding layer 20 can be flexibly unfolded and folded without affecting the cleaning effect. This design allows the cleaning robot to work more efficiently when cleaning different areas, avoiding excessive moisture leakage, and is particularly suitable for cleaning carpets and similar damp surfaces. This design makes the cleaning robot more adaptable, automatically adjusting the position of the shielding layer 20 according to different cleaning needs, increasing the robot's functionality and flexibility. Through the combination of the hinge shaft and the drive unit 30, the support unit 10 provides stable motion support. Whether unfolded or folded, the shielding layer 20 operates smoothly, avoiding irregular unfolding or folding of the shielding layer 20.

[0057] Example 2, as Figure 3 As shown, the support portion 10 includes a first rod 11, a second rod 12, a third rod 13, a fourth rod 14, and a slider 15.

[0058] The first rod 11 is fixedly mounted on the base or frame of the cleaning robot to provide support.

[0059] One end of the second rod 12 is hinged to one end of the first rod 11 via the first hinge shaft 16. The second rod 12 is connected to the drive unit 30, which is used to drive the second rod 12 to swing.

[0060] The third member 13 is hinged at one end to the first hinge shaft 16. In response to the support portion 10 being in the first position, the third member 13 is located between the first member 11 and the second member 12. This design allows the third member 13 to provide support in a specific state, ensuring the stability of the support portion 10.

[0061] One end of the fourth member 14 is hinged to the third member 13 via a second hinge shaft 17. The second hinge shaft 17 is located at the middle of the length of the third member 13. This design ensures that the fourth member 14 has a balanced support point when moving, reducing the impact of unbalanced forces on other parts of the support 10.

[0062] The slider 15 is mounted on the fourth member 14 and can slide along the length of the fourth member 14. The slider 15 is connected to the end of the second member 12 away from the first hinge axis 16, and the sliding process allows the distal end of the second member 12 to move accordingly. The fourth member 14 is provided with a groove 18, through which the slider 15 slides guided. This design ensures that the slider 15 can move freely within a restricted trajectory, avoiding excessive deviation, thereby ensuring the stability and accuracy of the entire structure.

[0063] The first hinge shaft 16 and the second hinge shaft 17 form the head section 131 of the third rod 13, and the second hinge shaft 17 and the free end of the third rod 13 form the tail section 132 of the third rod 13. The shielding layer 20 includes a first region 21, a second region 22, and a third region 23. In response to the support portion 10 being in a first position, the first region 21 is located within the area enclosed by the second rod 12, the third rod 13, and the fourth rod 14. The two side edges of the second region 22 are connected to the fourth rod 14 and the third rod 13, respectively, and the two side edges of the third region 23 are connected to the first rod 11 and the second rod 12, respectively.

[0064] When the shielding structure needs to be deployed, the driving torque of the drive unit 30 is transmitted to the second rod 12, and the second rod 12 begins to rotate counterclockwise. Since the second rod 12 is connected to the first rod 11 via the first hinge axis 16, the second rod 12 rotates around the center of the first hinge axis 16. This movement is driven by the power provided by the drive unit 30, and due to the constraint of the hinge, the rotation of the second rod 12 is around a fixed axis. The end of the second rod 12 is hinged to the slider 15, and the slider 15 rotates with the second rod 12 through this hinge constraint. When the second rod 12 begins to rotate counterclockwise, the slider 15 also moves accordingly. Since the slider 15 is located on the fourth rod 14, and the slider 15 slides along the slide rail on the fourth rod 14, the sliding of the slider 15 causes the fourth rod 14 to move accordingly. The other end of the fourth rod 14 is connected to the center of the third rod 13 via the second hinge axis 17. As slider 15 drives fourth link 14, fourth link 14 will rotate around the hinge center connected to third link 13 until slider 15 slides to the end of the slide rail of fourth link 14. At this time, first region 21 and second region 22 have been fully deployed. This means that through the action of second link 12 and slider 15, the first two parts of bracket 10 have entered a fully deployed state. As second link 12 continues to rotate, fourth link 14 drives third link 13 to rotate further counterclockwise through its hinge constraint. Specifically, the hinge between fourth link 14 and third link 13 acts on third link 13, causing it to rotate around the hinge center connected to first link 11 until the entire multi-link mechanism is fully deployed and third region 23 is also fully deployed. When the deployment of third link 13 is complete, as Figure 3 As shown, the entire support section 10 is fully extended, forming a complete structure. At this time, the first region 21, the second region 22, and the third region 23 have all been extended, and the support section 10 reaches its maximum working range, providing the intended support or shielding effect.

[0065] When the shielding structure needs to be folded, the drive unit 30 transmits the driving torque to the second link 12. At this time, the second link 12 rotates clockwise about the hinge center between itself and the first link 11. This rotation process begins the first step of the folding structure. The end of the second link 12 is connected to the slider 15, which moves along with the second link 12, causing the fourth link 14 to move accordingly along its slide rail. As the second link 12 rotates, the fourth link 14 also moves, gradually folding the first region 21 and the second region 22. The fourth link 14 and the third link 13 are connected by a second hinge shaft 17, and a return torsion spring is installed thereon. The function of the return torsion spring is to provide the clockwise rotational torque of the fourth link 14 about its rotation center. When the second link 12 begins to rotate clockwise, the return torsion spring generates torque to help the fourth link 14 rotate clockwise, so that the fourth link 14 coincides with the third link 13. The return torsion spring ensures that the fourth link 14 can rotate smoothly clockwise, and allows the first region 21 and the second region 22 to fold when the second link 12 rotates, thus preparing for subsequent actions. When the second link 12 continues to rotate clockwise until it coincides with the third link 13, the torque between the second link 12 and the third link 13 begins to act. Due to the hinge connection between the second link 12 and the third link 13, the torque of the second link 12 on the third link 13 is completely perpendicular to the length direction of the third link 13. This torque acts on the third link 13, causing it to rotate clockwise around the hinge center with the first link 11. As the second link 12 continues to rotate clockwise, the third link 13 also rotates until the entire structure is completely folded, as shown. Figure 4 As shown, this ultimately brings the entire shielding structure back to a compact, folded state.

[0066] The degrees of freedom of the support section 10 are calculated. The formula for the degrees of freedom is:

[0067]

[0068] in:

[0069] F represents the degrees of freedom;

[0070] n is the number of moving parts. The support part 10 has 4 moving parts (second rod 12, third rod 13, fourth rod 14 and slider 15), so n=4;

[0071] The term "low-pair" refers to a connection method using a single degree of freedom, such as a hinge and slider 15. The support portion 10 has four constraints: three hinges and slider 15. One of these hinges is a conformal hinge (first hinge axis 16), which connects to three components. Therefore, there are two low-pairs corresponding to the first hinge axis 16. The other three constraints each have one low-pair. =5;

[0072] Because of the number of high-pair pairs, there are no high-pair pairs in the support section 10, therefore =0;

[0073] Substitute into the formula to calculate:

[0074]

[0075] The results show the degrees of freedom of the support section 10. .

[0076] This means that the support section 10 has two independent degrees of freedom during movement. Specifically, this is reflected in:

[0077] The fact that the first region 21 and the second region 22 can expand or contract simultaneously indicates that the first region 21 and the second region 22 are coordinated at a certain moment and can simultaneously reach a fully expanded or fully folded state. The actions of these two regions are deterministic.

[0078] The order of unfolding and retracting of the third region 23 is not entirely determined. It may be related to the unfolding / folding state of the first two regions, but the order of unfolding and retracting is not fixed, meaning that there may be a certain delay or stagger in the entire shielding structure. Although the order is uncertain, a complete shielding effect can ultimately be achieved, that is, the structure can be fully unfolded or fully folded to achieve the final effect of the shielding function.

[0079] In the degree-of-freedom analysis, one degree of freedom is driven by the drive unit 30, and the return torsion spring serves as the drive device for the other degree of freedom. The return torsion spring effectively coordinates the movement of the shielding structure by influencing the motion of the links and providing rotational torque, enabling the mechanism to achieve the predetermined folding and unfolding process. The return torsion spring provides additional power and stability to the overall mechanism, especially maintaining structural stability during folding. As an additional power source, the return torsion spring helps control the movement of the fourth link 14, maintaining mechanism stability and assisting in the completion of the structure's folding and unfolding.

[0080] like Figure 3As shown, the shielding layer 20 includes multiple folded areas. In response to the support portion 10 being in a first position, the boundaries of the multiple folded areas correspond to the positions of the connecting rods, and at least one folded area is independently configured with respect to the other folded areas. Each area can have an independent connection method. This division allows each area to have a certain degree of independence when unfolding or retracting, enabling independent control of each area during movement and avoiding interference caused by conflicting actions between different areas. This is crucial for shielding structures requiring precise control, enabling smoother folding and unfolding.

[0081] The first region 21 is surrounded by the second member 12, the third member 13, and the fourth member 14. The two side edges of the first region 21 are connected to the second member 12 and the head section 131, respectively. In response to the support portion 10 being in the first position, the two side edges of the second region 22 are connected to the fourth member 14 and the tail section 132, respectively. The two side edges of the third region 23 are connected to the first member 11 and the second member 12, respectively.

[0082] Specifically, the first region 21 is separated from the second region 22, and the first region 21 is also separated from the fourth rod 14. Based on the movement trajectory of the support portion 10, the second region 22 and the third region 23 will not be pulled by other components when folded or unfolded. However, if the first region 21 is connected to the second region 22 or the fourth rod 14, it will be pulled by the fourth rod 14 during folding, causing interference. By separating the first region 21 from the second region 22 and the fourth rod 14, the first region 21 can be folded or unfolded independently without being affected by the movements of other regions or rods. This ensures that the regions do not interfere with each other during movement, resulting in smoother operation and reducing uneven force transmission.

[0083] like Figure 3 As shown in Embodiments 1 and 2 above, in response to the support portion 10 being in the first position, the length directions of the first rod 11 and the second rod 12 are perpendicular to each other. In this state, the vertical arrangement helps to balance the load of the shielding layer 20 and reduce the swaying or uneven force distribution of the shielding layer 20. This angular configuration can provide better rigid support, making the movement of each area more precise and stable.

[0084] like Figure 4 As shown, in response to the support portion 10 being in the second position, the first rod 11 and the second rod 12 overlap in the axial direction of the first hinge axis 16. Specifically, in response to the support portion 10 being in the second position, the first rod 11, the second rod 12, the third rod 13, the fourth rod 14, and the slider 15 all overlap in the axial direction of the first hinge axis 16.

[0085] The overlapping configuration allows the device to occupy less space in its retracted state. This is crucial for space-saving devices such as cleaning robots. When the support unit 10 is in the second position, the overlapping state allows the shielding layer 20 to fold or retract more tightly, avoiding wasted space while maintaining structural stability. In this state, because the rods are overlapping, external environmental disturbances or vibrations have less impact on the folding action, ensuring operational precision.

[0086] like Figure 1 As shown, the first rod 11 is fixedly disposed at one side edge of the opening 3 of the cleaning unit 1. Fixing the first rod 11 to one side edge of the opening 3 of the cleaning unit 1 means that it provides structural support during opening or closing. This support ensures the stability of the support portion 10 and prevents deformation or shaking of the support portion 10 during operation of the cleaning unit 1.

[0087] like Figure 1 , 2 As shown, a support portion 40 is provided on the bracket portion 10. In response to the bracket portion 10 being in the first position, the support portion 40 supports the shielding layer 20. The function of the support portion 40 is to ensure that the flexible curtain structure of the shielding layer 20 can be supported when unfolded, and that the flexible curtain structure of the shielding layer 20 can be better retracted with the rod when retracted.

[0088] In one specific embodiment of this utility model, the support part 40 includes a plurality of support rods, which are connected between the connecting rods through the same hinge shaft. This hinge structure ensures that under the action of external force, the support rods can be flexibly extended or retracted at certain angular intervals to form a dynamic support surface.

[0089] Multiple support rods are assembled to unfold in a fan shape at certain angular intervals. These support rods can be directly connected to the shielding layer 20 for fan-shaped opening. Angle limiters can also be set to control the unfolding angle of the support rods. Angle limiters are devices that restrict the unfolding angle of the support rods, preventing them from exceeding a preset angle and avoiding structural instability or damage due to over-expansion. This limiting design ensures that the unfolding angle of the support rods is within a safe and effective range, thereby guaranteeing the controllability and stability of the entire shielding structure.

[0090] like Figure 4As shown, in response to the support portion 10 being in the second position, the first rod 11, the second rod 12, the third rod 13, the fourth rod 14, the slider 15, and the support rod all overlap axially along the first hinge axis 16. Overlapping axially along the first hinge axis 16 means that these components (including the rods, slider 15, and support rod, etc.) are axially fitted together and their length directions are approximately aligned. This overlap of multiple components along the same axis makes the device more compact and occupies less space when retracted.

[0091] like Figure 2 As shown, a set of supports 40 is provided on each hinge axis between the links.

[0092] Specifically, the support part 40 includes a first support rod 41 and a second support rod 42.

[0093] On the second hinge shaft 17, a plurality of second support rods 42 are hinged. In response to the bracket portion 10 being in the first position, these second support rods 42 are positioned between the fourth rod 14 and the tail section 132, meaning they are closely aligned with the other components in this position. These support rods are designed to unfold in a fan shape at angular intervals, meaning they can unfold into a fan-shaped structure, providing more flexible and effective support or shielding functions.

[0094] Multiple first support rods 41 are hinged. In response to the bracket portion 10 being in a first position, these first support rods 41 will be positioned between the first rod 11 and the second rod 12, i.e., their extended position is in the middle of these two rods. Similar to the second support rod 42, the first support rods 41 can also be fanned out at certain angular intervals, thereby allowing the entire shielding structure to be angled and extended as needed.

[0095] Multiple support rods are connected by first and second hinge shafts 17 to form a mutually supporting structure. This structure ensures that the support rods maintain a stable angle and spacing in the deployed state, guaranteeing the stability of the shielding structure during use. The support section 40 is designed to unfold in a fan shape, providing a larger support surface when needed and retracting the support rods when not in use, minimizing the space occupied by the equipment. This design effectively reduces volume, especially when space saving is required (such as for storage or transportation). The hinged design of the support rods not only provides flexible angle adjustment but also improves the stability of the shielding structure by limiting the unfolding angle. The support rods unfold at precise angular intervals, avoiding excessive twisting or imbalance, thereby improving the overall durability and reliability of the structure.

[0096] This utility model also proposes a cleaning robot, including a cavity 2, a cleaning unit 1, an opening 3, and the aforementioned shielding structure.

[0097] like Figure 1 As shown, cleaning unit 1 is located inside cavity 2. Cleaning unit 1 is the core component of the robot for cleaning. Cleaning unit 1 can be a disc mop, a flat mop, a tracked mop, a roller mop, etc. When the cleaning robot detects a carpet, it triggers a mechanical structure through sensors (such as ultrasonic, pressure, or vision sensors) to automatically raise or disassemble cleaning unit 1, avoiding direct contact between the wet mop and the carpet.

[0098] Opening 3 is located on the cleaning robot cavity 2, and directly below the cleaning unit 1. This opening 3 is designed to ensure that the cleaning unit 1 is in direct contact with the ground to perform the cleaning work. The opening 3 allows the cleaning unit 1 to contact and clean the ground.

[0099] A shielding structure is located at opening 3. This shielding structure physically blocks contact between the cleaning unit 1 and the carpet, preventing moisture penetration and inhibiting mold growth, thus meeting household health needs. The same shielding mechanism can be adapted to various cleaning units 1 (disc, flat, roller, etc.), reducing model development costs.

[0100] like Figure 1 , 2 As shown, two sets of shielding structures are symmetrically arranged at opening 3. The symmetrical layout ensures a uniform distribution of driving torque, reducing body vibration and improving motion stability during unfolding or folding. For example, when one side of the drive unit 30 is activated, the other side uses a reverse compensation mechanism to counteract the deflection torque, preventing the robot from deviating from its path due to uneven force distribution.

[0101] In one specific embodiment of this utility model, at the edge position on the same side of the opening 3, the drive units 30 of the two sets of shielding structures are located at the middle of the length direction of the opening edge, that is, the drive units 30 of the two sets of shielding structures are arranged close to each other. The close design of the drive units 30 reduces the length of internal cables and significantly compresses the overall thickness of the mechanism, adapting to the compact cavity 2 structure. This layout also optimizes the utilization of the robot's internal space and facilitates the integration of other functional modules (such as sensors or vacuuming systems).

[0102] In one specific embodiment of this utility model, in response to the support portion 10 being in the second position, the shielding structure is located at the front edge of the opening 3 in the direction of movement of the cleaning robot. In this way, the support portion 10 is extended and suspended backward, avoiding interference and lifting of the suspended end of the support portion 10 with the ground during the movement of the cleaning robot, reducing the contact force between the shielding structure and obstacles, and preventing the mechanism from jamming or fibers from getting caught.

[0103] In summary, the shielding structure in the above solution effectively blocks the opening 3 of the cleaning unit 1, preventing the cleaning unit 1 from releasing moisture during the cleaning process and avoiding wetting of carpets or other easily damp surfaces. This protects the carpet from mold and prevents mold from harming family health. The shielding layer 20 can be unfolded in the first position, completely blocking the opening 3 of the cleaning unit 1, through the adjustment of the support part 10. In the second position, it can be folded to avoid interfering with the cleaning process. The flexible unfolding and folding mechanism can automatically adjust according to different cleaning needs, ensuring that the cleaning robot can operate efficiently in various environments. The design of the support part 10 can adapt to cleaning units 1 of different shapes (such as discs, rollers, etc.), greatly improving the adaptability of the shielding structure. The support part 10 adopts an overlapping design, allowing the shielding structure to be compactly folded in the second position, occupying less space. Through the reasonable layout and optimization of the support part 10, the overall structure is more compact, adapting to the smaller space of the cleaning robot cavity 2, thereby improving the utilization rate of internal space. The folding and unfolding process of the support unit 10 is unaffected by the external environment, maintaining precise movements and avoiding the impact of vibration on the equipment. Especially when folded, it reduces volume and facilitates storage. The shielding layer 20 is divided into multiple folding areas, with the first area 21 independently set from the others, ensuring that the unfolding and folding of different areas do not interfere with each other. This design not only improves the coordination of movement but also reduces uneven force transmission, ensuring the stable operation of the shielding structure. The support unit 40 consists of multiple support rods connected by hinge shafts, allowing them to unfold at certain angles, providing dynamic support for the shielding layer 20. Corner limiting ensures that the support rods do not exceed a preset angle when unfolded, guaranteeing structural stability. The support rod design provides a large support surface and can be folded away when not needed, reducing space occupation and optimizing the storage and transportation efficiency of the cleaning robot. This shielding structure is adaptable to various cleaning units 1, effectively preventing moisture leakage and avoiding damage to or dampness of sensitive surfaces such as carpets during cleaning. This design not only improves the applicability of the cleaning robot but also reduces the development cost of different models of cleaning robots.

[0104] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0105] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0106] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0107] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0108] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0109] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0110] The above description of the embodiments shown in this utility model (including the content set forth in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments described herein, and such modifications will be within the spirit and scope of the utility model.

[0111] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0112] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A shielding structure, characterized in that, include: The support unit is located at the opening of the cleaning unit of the cleaning robot; A shielding layer, connected to the support portion; A drive unit, connected to the bracket portion, drives the bracket portion to switch between the following position states. In the first position state, in response to the support portion being in the first position state, the shielding layer unfolds to cover the opening position. In the second position state, in response to the bracket being in the second position state, the shielding layer folds to avoid the opening position.

2. The shielding structure according to claim 1, characterized in that, The support unit includes multiple links, which are interconnected to form a multi-link structure. At least one link is connected to the drive unit to drive the multi-link structure to move. In response to the support unit being in a first position, the rigid support surface formed by the multi-link structure blocks the opening. In response to the support unit being in a second position, the multi-link structure avoids the opening.

3. The shielding structure according to claim 2, characterized in that, The support unit includes a first rod and a second rod. One end of the first rod and one end of the second rod are hinged together by a first hinge axis. The driving unit is connected to the second rod to drive the second rod to rotate around the first hinge axis to unfold or fold the shielding layer in a fan shape.

4. The shielding structure according to claim 2, characterized in that, The support portion includes: The first member is fixedly installed; The second member, one end of which is hinged to one end of the first member via a first hinge axis; The third member is hinged at one end to the first hinge shaft. In response to the bracket being in the first position, the third member is located between the first member and the second member. The fourth member has one end hinged to the third member via the second hinge axis; A slider is disposed on the fourth rod, the sliding direction of the slider is the length direction of the fourth rod, and the slider is hinged to the end of the second rod away from the first hinge axis.

5. The shielding structure according to any one of claims 3-4, characterized in that, In response to the bracket being in the second position, the first rod and the second rod overlap axially on the first hinge axis.

6. The shielding structure according to any one of claims 3-4, characterized in that, The first rod is fixedly installed at the edge of one side of the opening of the cleaning unit.

7. The shielding structure according to any one of claims 2-4, characterized in that, The shielding layer includes multiple folded areas. In response to the bracket being in a first position, the boundaries of the multiple folded areas correspond to the positions of the connecting rods, and at least one of the folded areas is independently set with respect to the other folded areas.

8. The shielding structure according to any one of claims 2-4, characterized in that, The bracket is provided with a support portion, and in response to the bracket being in a first position, the support portion supports the shielding layer.

9. The shielding structure according to claim 8, characterized in that, The support includes multiple support rods, which are connected to the same hinge axis between the connecting rods. The multiple support rods are assembled to be able to fan out at certain angular intervals.

10. The shielding structure according to claim 8, characterized in that, A set of supports is provided on each hinge axis between the links.

11. The shielding structure according to claim 1, characterized in that, The shielding layer is a flexible curtain structure.

12. A cleaning robot, characterized in that, include: cavity; A cleaning unit is disposed within the cavity; An opening is formed in the cavity, and the opening is located directly below the cleaning unit; A shielding structure is disposed at the opening, wherein the shielding structure is the shielding structure as described in any one of claims 1-11.

13. The cleaning robot according to claim 12, characterized in that, The shielding structure is arranged in two sets symmetrically at the opening.

14. The cleaning robot according to claim 13, characterized in that, The driving units of the two sets of shielding structures are located at the edge of the opening on the same side, and the driving units of the two sets of shielding structures are located at the middle of the length direction of the opening edge.

15. The cleaning robot according to any one of claims 12-14, characterized in that, In response to the bracket being in the second position, the shielding structure is located at the front edge of the opening in the direction of movement of the cleaning robot.

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