Cleaning robot

Abstract

A cleaning robot relates to the technical field of intelligent cleaning equipment and comprises a machine body, the machine body is provided with a suction module used for enabling the machine body to be adsorbed to a to-be-cleaned face and a driving module used for driving the machine body to move on the to-be-cleaned face, and the bottom of the machine body is provided with a cleaning element used for making contact with the to-be-cleaned face and executing the cleaning function. A cavity is formed in the bottom of the machine body, a sealing strip surrounds the periphery of the cavity, and an isolation barrier is formed when the sealing strip makes contact with the to-be-cleaned face so as to isolate the inner space and the outer space of the cavity; the suction module communicates with the cavity and is used for extracting air in the cavity to form negative pressure in the cavity, so that the pressure difference is generated between the inner side and the outer side of the isolation barrier, the machine body moves towards the side of the to-be-cleaned face, and the bottom end of the sealing strip presses the to-be-cleaned face to keep sealing. According to the utility model, the problem that the interior of the cavity is moist due to wetting of the cleaning cloth in the prior art can be improved.

Description

Technical Field

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

[0002] Chinese patent document CN105361786A discloses an adsorption-type self-moving device, which has a cavity at the bottom of the base that is connected to a vacuum source. A movable support is provided around the outside of the cavity. The movable support is connected to the bottom of the base through a support spring (the movable support connected to the base through the support spring is equivalent to a floating plate that can move up and down). The cleaning element (wiping cloth) at the bottom of the movable support forms a seal with the adsorption surface, so that the cavity constitutes a vacuum chamber.

[0003] However, existing cleaning robots typically have nozzles on the side of the machine to spray water onto the surface to be cleaned, thus reducing the difficulty of cleaning. In this case, the cleaning element (cloth) will become wet. Since the device mainly relies on the sealing between the cleaning element (cloth) and the adsorption surface to form a vacuum chamber, once the cloth is wetted, water can easily enter the chamber through the cloth's own permeability or from the tiny gaps between the cloth and the adsorption surface, causing internal dampness and affecting the normal operation of the internal components. Utility Model Content

[0004] The purpose of this invention is to provide a cleaning robot to improve the problem of dampness inside the cavity caused by a wet cloth in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cleaning robot, comprising a body, wherein the body is provided with a suction module for adsorbing onto the surface to be cleaned and a drive module for moving on the surface to be cleaned; the bottom of the body is provided with a cleaning element for contacting the surface to be cleaned and performing a cleaning function; the bottom of the body is provided with a chamber and a sealing strip is provided around the outside of the chamber; when the sealing strip contacts the surface to be cleaned, it forms an isolation barrier to isolate the interior and exterior spaces of the chamber.

[0006] The suction module is connected to the chamber and is used to extract air from the chamber to create a negative pressure inside the chamber, thereby creating a pressure difference between the inside and outside of the isolation barrier. This causes the machine body to move towards the surface to be cleaned and presses the bottom end of the sealing strip against the surface to be cleaned to maintain a seal.

[0007] Furthermore, the sealing strip is configured to elastically deform and / or float relative to the body when the cleaning robot is adsorbed onto the surface to be cleaned, so that the sealing strip maintains dynamic sealing contact with the surface to be cleaned during the movement of the body.

[0008] Furthermore, the bottom of the machine body is provided with an annular mounting groove, the sealing strip is embedded in the annular mounting groove, and its sealing working surface protrudes from the bottom surface of the machine body.

[0009] Furthermore, the annular mounting groove has a locking hole on its groove wall, and the back of the sealing strip has a locking protrusion corresponding to the locking hole. When the sealing strip is installed in place, the locking protrusion engages with the locking hole to form a fixed position.

[0010] Furthermore, the drive module includes a motor, a transmission wheel driven by the motor, and a transmission belt looped around the transmission wheel. The bottom contact section of the transmission belt passes through the area enclosed by the sealing strip and contacts the surface to be cleaned. A continuous waterproof sealing boundary is formed between the sealing strip and the surface to be cleaned, so that the drive area where the bottom contact section of the transmission belt is located is isolated inside the waterproof sealing boundary. The negative pressure state maintained by the suction module makes the drive area a dry working environment in which liquid cannot enter.

[0011] Furthermore, the sealing strip has a multi-layer sealing structure, including an inner main sealing layer and an outer waterproof sealing layer. The inner main sealing layer is used to maintain the sealing performance of the isolation barrier, and the outer waterproof sealing layer is spaced apart from the main sealing layer to form a stepped sealing structure.

[0012] Furthermore, the side of the body facing away from the surface to be cleaned is provided with an anti-deformation structure to resist the deformation of the body toward the surface to be cleaned when the chamber is under negative pressure adsorption.

[0013] Furthermore, the sealing strip is connected to the machine body via a floating mechanism, the floating mechanism comprising:

[0014] Mounting base fixed to the bottom of the machine body;

[0015] A movable support that can move vertically relative to the mounting base, and the sealing strip is fixed on the movable support;

[0016] A resilient reset element is located between the mounting base and the movable bearing base;

[0017] The resilient reset element is configured to allow the sealing strip to float in a direction perpendicular to the surface to be cleaned, while providing a resilient preload that presses the sealing strip against the surface to be cleaned.

[0018] Furthermore, the chamber is provided with a partition, and the partition is provided with ventilation holes.

[0019] This invention utilizes a sealing strip on the outer periphery of the cleaning chamber. When the sealing strip contacts the surface to be cleaned, it forms an effective barrier, isolating the interior and exterior spaces of the chamber. Compared to methods that rely solely on a seal between the cleaning element (such as a cloth) and the surface, this design more effectively prevents external moisture from entering the chamber. Even if the cleaning element becomes wet, the sealing strip prevents moisture from penetrating through the cleaning element or entering the chamber through tiny gaps between the cleaning element and the surface, thus protecting the suction module and other electronic components inside the chamber from the effects of a humid environment. By effectively preventing internal components from getting damp, it reduces problems such as short circuits and corrosion caused by moisture, thereby extending the service life of the cleaning robot, reducing maintenance costs and repair frequency, and improving the user experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the bottom structure of the cleaning robot;

[0021] Figure 2 This is a schematic diagram of the top structure of a cleaning robot;

[0022] Figure 3 A three-dimensional diagram of the organism;

[0023] Figure 4 This is a 3D view of the sealing strip;

[0024] Figure 5 This is a schematic diagram of the drive module.

[0025] In the picture:

[0026] 1—Body 1a—Cavity

[0027] 1b – Annular mounting groove; 1b1 – Locking hole

[0028] 2 - Suction Module 3 - Drive Module

[0029] 3a - Motor; 3b - Drive wheel

[0030] 3c - Drive belt 4 - Cleaning element

[0031] 5—Sealing strip 5a—Locking protrusion

[0032] 6—Partition plate 6a—Ventilation hole

[0033] 7 - Deformation-resistant reinforcing strip; 8 - Nozzle. Detailed Implementation

[0034] To facilitate a clearer understanding of the concept of this utility model by those skilled in the art, the following description, in conjunction with embodiments and accompanying drawings, will provide a further explanation.

[0035] like Figure 1-5 As shown, the cleaning robot in this embodiment mainly includes a suction module 2, a drive module 3, a controller, and a body 1. The bottom of the body 1 has a chamber 1a. The suction module 2 draws air from the chamber 1a to create negative pressure, allowing the robot to adhere to the surface to be cleaned. The suction module 2 includes, but is not limited to, a negative pressure fan or a vacuum pump. The drive module 3 includes a transmission belt 3c, a transmission wheel 3b, and a motor 3a that drives the transmission wheel 3b to rotate. The transmission belt 3c is wrapped around the outer edge of the transmission wheel 3b. When the body 1 adheres to the surface to be cleaned, the transmission belt 3c is in direct contact with the surface, and the body 1 moves directionally along the surface through frictional transmission. A cleaning element 4, such as a cleaning cloth, is also provided at the bottom of the body 1 for contacting the surface to be cleaned and performing the cleaning function. The aforementioned surface to be cleaned includes, but is not limited to, the surface of a panel, such as a vertical glass window or a glass curtain wall. This embodiment mainly uses a glass window as an example for explanation. Furthermore, the overall shape of the cleaning robot in this embodiment adopts a square (rectangular or square) outer contour, but this design can be adjusted to other shapes according to actual needs. As for the air duct, walking mechanism, and control circuit of the cleaning robot, this embodiment is similar to existing cleaning robots, and will not be described in detail for the sake of simplicity.

[0036] Unlike existing cleaning robots, this embodiment has a sealing strip 5 surrounding the outer periphery of the chamber 1a, as can be seen in [reference]. Figure 1 When the sealing strip 5 contacts the surface to be cleaned, it forms an isolation barrier, effectively isolating the interior and exterior spaces of chamber 1a. The suction module 2 is connected to chamber 1a, creating negative pressure by extracting air from chamber 1a, resulting in a pressure difference between the inside and outside of the isolation barrier. This pushes the body 1 towards the surface to be cleaned, causing the bottom of the sealing strip 5 to press firmly against the surface, maintaining a seal. Compared to relying solely on the cleaning element 4 (such as a cloth) to form a seal with the surface to be cleaned, this design more effectively prevents external moisture from entering chamber 1a and reduces air permeability. Even if the cleaning cloth is wet, the sealing strip 5 prevents moisture from penetrating through the cleaning cloth or entering the interior of chamber 1a through tiny gaps between the cloth and the surface to be cleaned, thus protecting the suction module 2 and other electronic components inside chamber 1a from the effects of a humid environment. By effectively preventing internal components from getting damp, problems such as short circuits and corrosion caused by moisture are reduced, extending the service life of the cleaning robot, reducing maintenance costs and repair frequency, and improving the user experience.

[0037] In this embodiment, the sealing strip 5 achieves dynamic sealing through at least one of the following mechanisms: (1) Material deformation mechanism: The sealing strip 5 is made of elastic materials such as silicone, utilizing its compression and rebound characteristics to adapt to the undulations of the surface to be cleaned. This material can undergo elastic deformation when the cleaning robot is adsorbed onto the surface to be cleaned, thereby maintaining dynamic sealing contact with the surface to be cleaned continuously during the movement of the robot body 1. (2) Structural floating mechanism: The sealing strip 5 is connected to the robot body 1 through a floating mechanism, allowing it to move as a whole in a direction perpendicular to the surface to be cleaned to compensate for the height difference. This design allows the sealing strip 5 to float relative to the robot body 1 when the cleaning robot is adsorbed onto the surface to be cleaned, thereby maintaining dynamic sealing contact with the surface to be cleaned continuously during the movement of the robot body 1. The two mechanisms can be implemented independently or in combination.

[0038] Most existing tracked cleaning robots are equipped with a floating plate that can move up and down. A cleaning element (such as a cloth) at the bottom of the floating plate forms a seal with the surface to be cleaned, thus creating a vacuum chamber. However, this structure is relatively complex and increases cost due to the need for the floating plate. In contrast, this embodiment uses a sealing strip 5 at the bottom of the body 1, configured to be elastically deformable and / or float relative to the body 1, allowing it to form a seal with the surface to be cleaned, thereby creating a vacuum chamber. Compared to the traditional floating plate structure, the sealing strip 5 is not only simpler in structure, but also further reduces cost due to this simplification.

[0039] If the sealing strip 5 achieves dynamic sealing solely through its elastic deformation capacity, the following installation method can be adopted: (e.g.) Figure 1 , 3 As shown, an annular mounting groove 1b is provided at the bottom of the body 1, and the sealing strip 5 is embedded in the mounting groove, with the sealing working surface of the sealing strip 5 (the end used to contact the surface to be cleaned) protruding from the bottom surface of the body 1. Compared with directly fixing it to the surface of the body 1, using an annular mounting groove 1b to install the sealing strip 5 has many advantages. The annular mounting groove 1b can play a limiting and guiding role: radial limiting can prevent the sealing strip 5 from moving laterally, and axial guiding can ensure that the sealing working surface is perpendicular to the surface to be cleaned.

[0040] The sealing strip 5 can be fixed in the annular mounting groove 1b by adhesive, or it can be installed in a detachable manner.

[0041] For the detachable connection structure between the sealing strip 5 and the annular mounting groove 1b, the following design can be made: Figure 3 , 4As shown, a locking hole 1b1 is provided on the groove wall of the annular mounting groove 1b, and a locking protrusion 5a corresponding to the locking hole 1b1 is provided on the back side of the sealing strip 5. When the sealing strip 5 is installed in place, the locking protrusion 5a engages with the locking hole 1b1, forming a fixed position. The front end of the locking protrusion 5a can be designed as a cone shape to better fit into the locking hole 1b1; the rear end of the locking protrusion 5a can be designed as a flat shape to better position and fix it in the locking hole 1b1, preventing it from falling out.

[0042] The floating mechanism (not shown in the figure) mainly includes a mounting base, a movable support, and an elastic reset element (e.g., a spring). The mounting base is fixed to the bottom of the body 1, the movable support can move vertically relative to the mounting base, and the sealing strip 5 is fixed to the movable support. The elastic reset element is located between the mounting base and the movable support. Its function is to allow the sealing strip 5 to float in a direction perpendicular to the surface to be cleaned, and simultaneously provide an elastic preload, enabling the sealing strip 5 to press tightly against the surface to be cleaned.

[0043] The sealing strip 5 not only surrounds the chamber 1a at the bottom of the body 1, but also the drive belt 3c of the drive module 3 and its surrounding gaps. The nozzle 8 and cleaning cloth are located outside the sealing strip 5. In this way, external liquid water is effectively blocked, making it difficult for it to enter the drive module 3 and thus avoiding any impact. Specifically, the bottom contact section of the drive belt 3c (the bottom section used to contact the surface to be cleaned) passes through the area enclosed by the sealing strip 5 and contacts the surface to be cleaned. At this time, a continuous waterproof sealing boundary is formed between the sealing strip 5 and the surface to be cleaned, isolating the drive area where the bottom contact section of the drive belt 3c is located inside the boundary. The negative pressure maintained by the suction module 2 further creates a dry working environment in the drive area that prevents liquid from entering.

[0044] Normally, a single-layer sealing structure is sufficient for basic requirements of the sealing strip 5. However, to further improve sealing performance, it can be designed as a multi-layer sealing structure, specifically including an inner main sealing layer and an outer waterproof sealing layer. The inner main sealing layer is primarily used to maintain the sealing of the isolation barrier, while the outer waterproof sealing layer is spaced apart from the main sealing layer, forming a stepped sealing structure. This design effectively enhances the sealing effect; even if a minor leak occurs in the main sealing layer, the outer waterproof sealing layer can still play a supporting sealing role, thereby further improving the reliability of the seal.

[0045] When the suction-type cleaning robot is working, the suction module 2 creates a negative pressure within chamber 1a, causing the body 1 to experience a strong suction force towards the surface to be cleaned. However, without anti-deformation measures, a series of problems may arise. First, under continuous negative pressure, the body 1 (especially the plastic shell) may undergo plastic deformation, such as central depression or edge warping. This deformation not only affects the fit between the sealing strip 5 and the surface to be cleaned, leading to vacuum leakage, but also accelerates material fatigue, thereby shortening the lifespan of the device. Second, if the deformation of the body 1 causes abnormal changes in the volume of chamber 1a, it may interfere with the stability of the negative pressure, causing fluctuations in the suction force, thus affecting the robot's mobility. To solve these problems, an anti-deformation structure can be provided on the side of the body 1 facing away from the surface to be cleaned (i.e., the top or non-working surface). For example, an anti-deformation reinforcing strip 7 can be used, with its two ends projected onto the surface to be cleaned on the inner and outer sides of the projection area of ​​chamber 1a, respectively. (See [reference needed]). Figure 2 This design effectively resists deformation of the body 1 under negative pressure, maintaining structural stability and functional reliability, and ensuring the efficient and stable operation of the cleaning robot.

[0046] In addition, such as Figure 1 As shown, the cleaning robot's chamber 1a contains a partition 6 with ventilation holes 6a, typically multiple holes evenly distributed. The partition 6 is located within the chamber 1a, forming a recessed structure and maintaining a distance from the surface to be cleaned. This design offers several advantages: firstly, the ventilation holes 6a on the partition 6 optimize airflow distribution within the chamber 1a, allowing negative pressure to act more evenly on the surface to be cleaned, thereby improving adsorption efficiency; secondly, the gap between the partition 6 and the surface to be cleaned effectively prevents dust or debris generated during cleaning from directly entering the chamber 1a, reducing the risk of blockage; furthermore, the partition 6 provides support, enhancing the structural stability of the chamber 1a and reducing potential deformation under negative pressure, thus improving the overall performance and lifespan of the cleaning robot.

[0047] The above embodiments are preferred implementations of this utility model. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A cleaning robot, comprising a body (1), wherein the body (1) is provided with a suction module (2) for adsorbing itself onto a surface to be cleaned and a drive module (3) for moving itself on the surface to be cleaned, and a cleaning element (4) is provided at the bottom of the body (1) for contacting the surface to be cleaned and performing a cleaning function, characterized in that: The bottom of the body (1) is provided with a chamber (1a) and a sealing strip (5) is provided around the outer periphery of the chamber (1a). When the sealing strip (5) comes into contact with the surface to be cleaned, it forms an isolation barrier to isolate the space inside and outside the chamber (1a). The suction module (2) is connected to the chamber (1a) and is used to extract air from the chamber (1a) to form a negative pressure in the chamber (1a), so that a pressure difference is generated on both sides of the isolation barrier, thereby causing the body (1) to move towards the surface to be cleaned and pressing the bottom end of the sealing strip (5) against the surface to be cleaned to maintain a seal.

2. The cleaning robot according to claim 1, wherein: The sealing strip (5) is configured to be elastically deformable and / or float relative to the body (1) when the cleaning robot is adsorbed onto the surface to be cleaned, so that the sealing strip (5) maintains dynamic sealing contact with the surface to be cleaned during the movement of the body (1).

3. The cleaning robot of claim 1, wherein: The bottom of the body (1) is provided with an annular mounting groove (1b), and the sealing strip (5) is embedded in the annular mounting groove (1b), and its sealing working surface protrudes from the bottom surface of the body (1).

4. The cleaning robot according to claim 3, characterized in that: The annular mounting groove (1b) has a locking hole (1b1) on its groove wall. The back side of the sealing strip (5) has a locking protrusion (5a) corresponding to the locking hole (1b1). When the sealing strip (5) is installed in place, the locking protrusion (5a) is inserted into the locking hole (1b1) to form a fixed position.

5. The cleaning robot of claim 1, wherein: The drive module (3) includes a motor (3a), a transmission wheel (3b) driven by the motor (3a), and a transmission belt (3c) looped around the transmission wheel (3b). The bottom contact section of the transmission belt (3c) passes through the area enclosed by the sealing strip (5) and contacts the surface to be cleaned. A continuous waterproof sealing boundary is formed between the sealing strip (5) and the surface to be cleaned, so that the drive area where the bottom contact section of the transmission belt (3c) is located is isolated inside the waterproof sealing boundary. The negative pressure state maintained by the suction module (2) makes the drive area a dry working environment in which liquid cannot enter.

6. The cleaning robot according to claim 1 or 5, wherein: The sealing strip (5) is a multi-layer sealing structure, including an inner main sealing layer and an outer waterproof sealing layer. The outer waterproof sealing layer and the main sealing layer are spaced apart to form a stepped sealing structure.

7. The cleaning robot of claim 1, wherein: The body (1) has an anti-deformation structure on the side facing away from the surface to be cleaned, which is used to resist the deformation of the body (1) towards the surface to be cleaned when the chamber (1a) is subjected to negative pressure adsorption.

8. The cleaning robot according to claim 1, characterized in that: The sealing strip (5) is connected to the body (1) via a floating mechanism, the floating mechanism comprising: Mounting base fixed to the bottom of the body (1); A movable support that can move vertically relative to the mounting base, wherein the sealing strip (5) is fixed on the movable support; A resilient reset element is located between the mounting base and the movable bearing base; The elastic reset element is configured to allow the sealing strip (5) to float in a direction perpendicular to the surface to be cleaned, while providing an elastic preload that presses the sealing strip (5) against the surface to be cleaned.

9. The cleaning robot of claim 1, wherein: The chamber (1a) is provided with a partition (6), and the partition (6) is provided with a vent (6a).

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