Self-adapting flexible cleaning disc for window cleaning machine

Abstract

The utility model relates to cleaning equipment technical field especially, relates to a kind of self-adapting elastic cleaning disc of window cleaning machine, including rotating support, installation unit, several springs and cleaning disc main body, rotating support has mounting hole and multiple air vents, rotating support is installed on the output shaft for driving cleaning disc rotation in window cleaning machine by mounting hole, cleaning disc main body is installed on rotating support by installation unit, the both ends of several springs are connected with rotating support and cleaning disc main body respectively, cleaning disc main body is made of polyurethane or elastic plastic material, cleaning disc main body has suction opening, to solve the technical problem that cleaning disc in prior art is caused by material structure problem to poor negative pressure cavity seal, insufficient sealing reliability, and lack of glass curvature adaptive mechanism, only applicable to the technical problem of plane glass cleaning.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to an adaptive elastic cleaning disc for a window cleaning machine. Background Technology

[0002] With the acceleration of urbanization, the demand for cleaning exterior windows of high-rise buildings is increasing. Traditional manual window cleaning is gradually being replaced by automated equipment due to the high risks, low efficiency, and high costs associated with working at heights. Window cleaning robots, as a representative of intelligent cleaning equipment, achieve autonomous cleaning of glass surfaces. The cleaning disc is an important component of window cleaning robots.

[0003] In existing technology, there are two main types of cleaning discs in commercially available circular window cleaning machines, both made of rigid materials. One type uses clips on the cleaning disc to directly engage with the rotating bracket, while the other uses several springs and screws to form a simple floating structure between the cleaning disc and the transition chuck, which is then secured to the rotating bracket by clips on the transition chuck. Both types of window cleaning machines with rigid cleaning discs have significant gaps between their structural components and between the cleaning disc and the glass, inevitably leading to poor sealing of the negative pressure chamber and a high negative pressure leakage rate. Furthermore, the cleaning disc only forms a closed negative pressure chamber with its edge in contact with the glass, resulting in insufficient sealing reliability. Even a partial separation of the sealing flange on the cleaning disc from the glass will cause serious air leakage, significantly reducing the suction power of the window cleaning machine, affecting its normal operation, and even causing it to fall. In addition, existing technology lacks a glass curvature adaptive mechanism, only supporting cleaning operations on flat glass with high flatness.

[0004] In summary, existing circular window cleaning machines with rigid cleaning discs suffer from poor sealing of the negative pressure chamber and insufficient sealing reliability due to material and structural issues, and lack an adaptive mechanism for glass curvature, making them only suitable for cleaning flat glass. Utility Model Content

[0005] The purpose of this utility model is to provide an adaptive elastic cleaning disc for a window cleaning machine, which aims to solve the technical problems in the prior art where the cleaning disc has poor sealing of the negative pressure chamber and insufficient sealing reliability due to material and structural issues, and lacks a glass curvature adaptive mechanism, making it only suitable for cleaning flat glass.

[0006] To achieve the above objectives, this utility model employs an adaptive elastic cleaning disc for a window cleaning machine, comprising a rotating bracket, a mounting unit, several springs, and a cleaning disc body. The rotating bracket has mounting holes and multiple ventilation openings. The rotating bracket is mounted on the output shaft of the window cleaning machine, which drives the cleaning disc to rotate, through the mounting holes. The cleaning disc body is mounted on the rotating bracket through the mounting unit. The two ends of the several springs are respectively connected to the rotating bracket and the cleaning disc body. The cleaning disc body is made of polyurethane or elastic plastic material and has an air intake opening.

[0007] The adaptive elastic cleaning disc of the window cleaning machine also includes an annular protrusion, the rotating bracket has an annular groove, the annular protrusion is fixedly connected to the main body of the cleaning disc, and the annular protrusion is adapted to the annular groove.

[0008] The adaptive elastic cleaning disc of the window cleaning machine also includes an outer annular sealing strip, an inner annular sealing strip, and several radial sealing strips. The outer annular sealing strip and the inner annular sealing strip are fixedly connected to the main body of the cleaning disc, and the two ends of the radial sealing strip are fixedly connected to the outer annular sealing strip and the inner annular sealing strip, respectively.

[0009] The cleaning tray body has an annular lip.

[0010] The rotating bracket has a beveled structure.

[0011] The installation unit includes multiple positioning posts and multiple screws. The multiple positioning posts are fixedly connected to the rotating bracket. One end of each screw passes through the cleaning disc body and is tightened onto the corresponding positioning post.

[0012] This utility model discloses an adaptive elastic cleaning disc for a window cleaning machine. In practical use, before use, a cleaning cloth is placed over the main body of the cleaning disc, and then the main body of the cleaning disc is attached to the glass to be cleaned, thus forming a complete and closed negative pressure chamber. After the machine is turned on, the fan starts, drawing air from the negative pressure chamber to create negative pressure. The pressure difference firmly adheres the window cleaning machine to the glass, thereby enabling the cleaning operation.

[0013] The elasticity of the cleaning tray body and its suspension structure with the rotating bracket allow the cleaning tray body to adapt well to unevenness and curvature of the glass. After the fan is started, the window cleaning machine generates suction on the glass. At the outward-protruding (theoretically flat) parts of the glass, the outer and inner annular sealing strips and corresponding springs on the cleaning tray body experience relatively greater pressure than other parts. Consequently, the compression of the springs and the deformation of the cleaning tray body due to pressure are relatively larger. At other parts, the pressure is relatively smaller, resulting in relatively smaller spring compression and deformation of the outer and inner annular sealing strips on the cleaning tray body. This achieves the desired effect for the cleaning tray body... The compression of the spring and the main body of the cleaning disc is adaptively adjusted. Both the outer and inner annular sealing strips can press the cleaning cloth installed on them tightly against the glass, thereby ensuring a stable adsorption force between the window cleaning machine and the glass. This helps to improve the cleaning ability of the window cleaning machine and avoid or reduce the occurrence of the window cleaning machine stopping work or even falling off due to insufficient adsorption force. This method solves the technical problems of the existing technology, such as poor sealing of the negative pressure chamber and insufficient sealing reliability due to material and structure issues of the cleaning disc, and the lack of glass curvature adaptive mechanism, which makes it only suitable for cleaning flat glass. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0015] Figure 1 This is a cross-sectional view of the adaptive elastic cleaning disc of the window cleaning machine of this utility model.

[0016] Figure 2 This is a schematic diagram of the main structure of the cleaning tray of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the rotating bracket of this utility model.

[0018] Figure 4 This is a simulation diagram of the airflow kinetic energy at the sealed interface of this utility model.

[0019] Figure 5 This is a schematic diagram of the adaptive deformation (curved glass) when this utility model is in use.

[0020] 1-Rotating bracket, 2-Spring, 3-Cleaning disc body, 4-Mounting hole, 5-Ventilation port, 6-Suction opening, 7-Annular protrusion, 8-Annular groove, 9-Outer annular sealing strip, 10-Inner annular sealing strip, 11-Radial sealing strip, 12-Annular lip, 13-Beveled structure, 14-Positioning post, 15-Screw, 16-Auxiliary air vent, 17-Anti-slip strip, 18-Independent negative pressure chamber, 19-Air vent. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Please see Figures 1 to 5 , Figure 1 This is a cross-sectional view of the adaptive elastic cleaning disc of the window cleaning machine of this utility model. Figure 2 This is a schematic diagram of the structure of the cleaning tray body 3 of this utility model. Figure 3 This is a schematic diagram of the structure of the rotating bracket 1 of this utility model. Figure 4 This is a simulation diagram of the airflow kinetic energy at the sealed interface of this utility model. Figure 5 This is a schematic diagram of the adaptive deformation (curved glass) when this utility model is in use.

[0023] This utility model provides an adaptive elastic cleaning disc for a window cleaning machine, including a rotating bracket 1, a mounting unit, several springs 2, and a cleaning disc body 3. The rotating bracket 1 has mounting holes 4 and multiple ventilation openings 5. The rotating bracket 1 is mounted on the output shaft of the window cleaning machine for driving the cleaning disc to rotate through the mounting holes 4. The cleaning disc body 3 is mounted on the rotating bracket 1 through the mounting unit. The two ends of the several springs 2 are respectively connected to the rotating bracket 1 and the cleaning disc body 3. The cleaning disc body 3 is made of polyurethane or elastic plastic material and has an air intake opening 6.

[0024] The adaptive elastic cleaning disc of the window cleaning machine also includes an annular protrusion 7, the rotating bracket 1 has an annular groove 8, the annular protrusion 7 is fixedly connected to the cleaning disc body 3, and the annular protrusion 7 is adapted to the annular groove 8.

[0025] The adaptive elastic cleaning disc of the window cleaning machine also includes an outer annular sealing strip 9, an inner annular sealing strip 10, and several radial sealing strips 11. The outer annular sealing strip 9 and the inner annular sealing strip 10 are both fixedly connected to the cleaning disc body 3. The two ends of the radial sealing strip 11 are fixedly connected to the outer annular sealing strip 9 and the inner annular sealing strip 10, respectively.

[0026] In this specific embodiment, before use, the cleaning cloth is placed over the cleaning disc body 3, and then the cleaning disc body 3 is attached to the glass to be cleaned, thereby forming a complete and closed negative pressure chamber (e.g., Figure 4 (As shown). After the machine is turned on, the window cleaning machine's fan starts and draws air out of the negative pressure chamber to create negative pressure. The air pressure difference firmly adheres the window cleaning machine to the glass, thus enabling the cleaning operation to be carried out.

[0027] The elasticity of the cleaning tray body 3 and its suspension structure with the rotating bracket 1 allow the cleaning tray body 3 to adapt well to unevenness and curvature of the glass. After the fan is started, the window cleaning machine generates suction on the glass. At the outward protruding (theoretical plane) part of the glass, the pressure on the outer annular sealing strip 9 and the inner annular sealing strip 10 on the cleaning tray body 3 and the corresponding spring 2 is relatively greater than in other parts. Therefore, the compression of the spring 2 and the deformation of the cleaning tray body 3 due to pressure are relatively larger. At other parts, due to relatively smaller pressure, the compression of the spring 2 and the deformation of the outer annular sealing strip 9 and the inner annular sealing strip 10 on the main body of the cleaning tray are relatively smaller. This allows the cleaning tray body 3 to adaptively adjust the compression of the spring 2 and the cleaning tray body 3. The outer annular sealing strip 9 and the inner annular sealing strip 10 can both press the cleaning cloth installed on them tightly against the glass (e.g., Figure 5 As shown in the diagram, the outer annular sealing strip 9 and the inner annular sealing strip 10 are connected by the radial sealing strip 11, thereby forming independent negative pressure chambers 18 with the glass. Each independent negative pressure chamber 18 has an air passage hole 19 at its bottom near the edge of the inner annular sealing strip 10, which ensures a stable adsorption force between the window cleaning machine and the glass. This is beneficial to improving the cleaning ability of the window cleaning machine and avoiding or reducing the occurrence of the window cleaning machine stopping work or even falling off due to insufficient adsorption force. In this way, the technical problems of the existing technology, such as poor sealing of the negative pressure chamber and insufficient sealing reliability due to material and structure issues of the cleaning disc, and lack of glass curvature adaptive mechanism, are only applicable to the cleaning of flat glass.

[0028] The cleaning disc body 3 has an annular lip 12. By setting the annular lip 12, the annular lip 12 of the cleaning disc body 3 is tightly fitted with the smooth surface of the rotating bracket 1. After the cleaning cloth is installed on the cleaning disc body 3, the rubber band on the cleaning cloth plays an auxiliary tightening role for the annular lip 12. In addition, the negative pressure difference between the negative pressure chamber and the atmosphere will cause the annular lip 12 to fit more tightly with the mating surface of the rotating bracket 1, thereby eliminating micro gaps.

[0029] Secondly, the rotating bracket 1 has a chamfered structure 13. By setting the chamfered structure 13, the cleaning tray body 3 can be guided when it is installed on the rotating bracket 1, which improves the ease of installation.

[0030] Furthermore, the installation unit includes multiple positioning posts 14 and multiple screws 15. The multiple positioning posts 14 are all fixedly connected to the rotating bracket 1. One end of the screw 15 passes through the cleaning disc body 3 and is tightened onto the corresponding positioning post 14. By passing one end of the screw 15 through the cleaning disc body 3 and tightening it onto the corresponding positioning post 14, the cleaning disc body 3 can be fixed onto the rotating bracket 1.

[0031] Furthermore, the cleaning disc body 3 also has a plurality of auxiliary air vents 16, which are evenly distributed along the axial center line of the cleaning disc body 3. By setting the auxiliary air vents 16, the adsorption effect during adsorption can be further improved.

[0032] Finally, the outer wall of the cleaning tray body 3 is provided with a number of anti-slip strips 17, which can improve the anti-slip effect after the cleaning cloth is covered.

[0033] Using the adaptive elastic cleaning disc of a window cleaning machine according to this embodiment, in specific use, before use, a cleaning cloth is placed on the cleaning disc body 3, and then the cleaning disc body 3 is attached to the glass to be cleaned, thereby forming a complete and closed negative pressure chamber (e.g., ...). Figure 4 (As shown). After the machine is turned on, the window cleaning machine's fan starts and draws air out of the negative pressure chamber to create negative pressure. The air pressure difference firmly adheres the window cleaning machine to the glass, thus enabling the cleaning operation to be carried out.

[0034] The elasticity of the cleaning tray body 3 and its suspension structure with the rotating bracket 1 allow the cleaning tray body 3 to adapt well to unevenness and curvature of the glass. After the fan is started, the window cleaning machine generates suction on the glass. At the outward protruding (theoretical plane) part of the glass, the pressure on the outer annular sealing strip 9 and the inner annular sealing strip 10 on the cleaning tray body 3 and the corresponding spring 2 is relatively greater than in other parts. Therefore, the compression of the spring 2 and the deformation of the cleaning tray body 3 due to pressure are relatively larger. At other parts, due to relatively smaller pressure, the compression of the spring 2 and the deformation of the outer annular sealing strip 9 and the inner annular sealing strip 10 on the main body of the cleaning tray are relatively smaller. This allows the cleaning tray body 3 to adaptively adjust the compression of the spring 2 and the cleaning tray body 3. The outer annular sealing strip 9 and the inner annular sealing strip 10 can both press the cleaning cloth installed on them tightly against the glass (e.g., Figure 5As shown in the figure, this ensures a stable adsorption force between the window cleaning machine and the glass, which is beneficial to improving the cleaning ability of the window cleaning machine and avoiding or reducing the occurrence of the window cleaning machine stopping work or even falling off due to insufficient adsorption force. This method solves the technical problems of the existing technology, which has poor sealing of the negative pressure chamber and insufficient sealing reliability due to material and structure problems of the cleaning disc, and lacks glass curvature adaptive mechanism, and is only suitable for cleaning flat glass.

[0035] This invention also provides a dynamic sealing method for the adaptive elastic cleaning disc of a window cleaning machine, applicable to the adaptive elastic cleaning disc of the window cleaning machine as described above.

[0036] include:

[0037] The double-layer dynamic seal between the cleaning tray body 3 and the rotating bracket 1;

[0038] The cleaning tray body 3 and the glass form an adaptive independent dynamic seal.

[0039] The specific details of the double-layer dynamic seal between the cleaning disc body 3 and the rotating bracket 1 are as follows:

[0040] The annular lip 12 of the cleaning disc body 3 is tightly fitted with the smooth surface of the rotating bracket 1. After the cleaning cloth is installed on the cleaning disc body 3, the rubber band on the cleaning cloth plays an auxiliary tightening role on the annular lip 12. In addition, the negative pressure difference between the negative pressure chamber and the atmosphere will cause the annular lip 12 to fit more tightly with the mating surface of the rotating bracket 1, thereby eliminating micro gaps and forming the first layer of dynamic sealed negative pressure chamber.

[0041] The annular protrusion 7 on the main body 3 of the cleaning tray cooperates with the annular groove 8 at the corresponding position of the rotating bracket 1 to form a labyrinth seal between them; the labyrinth structure consumes kinetic energy by changing the direction of airflow, and the air resistance efficiency is improved, thereby forming a second layer of sealing negative pressure.

[0042] The adaptive independent dynamic seal between the cleaning tray body 3 and the glass is as follows:

[0043] The cleaning tray body 3 has an outer annular sealing strip 9 and an inner annular sealing strip 10 on the contact surface with the glass. The outer annular sealing strip 9 is located at the edge of the cleaning tray body 3, and the inner annular sealing strip 10 is located on the inner side. The outer annular sealing strip 9 and the inner annular sealing strip 10 are connected by a radial sealing strip 11, thereby forming independent negative pressure chambers 18 with the glass. Each independent negative pressure chamber 18 has a vent hole 19 at the bottom near the edge of the inner annular sealing strip 10. When a few independent negative pressure chambers 18 detach from the glass, serious leakage of the negative pressure chamber will not occur.

[0044] During the cleaning operation, the window cleaning machine uses the elastic force of the spring 2 and the deformation of the elastic matrix of the cleaning disc body 3 to match uneven or curved glass, thereby achieving a reliable dynamic seal between the window cleaning machine and the glass and maintaining sufficient adhesion between the window cleaning machine and the glass.

[0045] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. An adaptive elastic cleaning disc for a window cleaning machine, characterized in that, The device includes a rotating bracket, a mounting unit, several springs, and a cleaning disc body. The rotating bracket has mounting holes and multiple ventilation openings. The rotating bracket is mounted on the output shaft of the window cleaning machine, which drives the cleaning disc to rotate, through the mounting holes. The cleaning disc body is mounted on the rotating bracket through the mounting unit. The two ends of the several springs are respectively connected to the rotating bracket and the cleaning disc body. The cleaning disc body is made of polyurethane or elastic plastic material and has an air intake opening.

2. The adaptive elastic cleaning disc of the window cleaning machine as described in claim 1, characterized in that, The adaptive elastic cleaning disc of the window cleaning machine also includes an annular protrusion, the rotating bracket has an annular groove, the annular protrusion is fixedly connected to the main body of the cleaning disc, and the annular protrusion is adapted to the annular groove.

3. The adaptive elastic cleaning disc of the window cleaning machine as described in claim 2, characterized in that, The adaptive elastic cleaning disc of the window cleaning machine also includes an outer annular sealing strip, an inner annular sealing strip, and several radial sealing strips. The outer annular sealing strip and the inner annular sealing strip are both fixedly connected to the main body of the cleaning disc, and the two ends of the radial sealing strip are fixedly connected to the outer annular sealing strip and the inner annular sealing strip, respectively.

4. The adaptive elastic cleaning disc of the window cleaning machine as described in claim 3, characterized in that, The cleaning tray body has an annular lip.

5. The adaptive elastic cleaning disc of the window cleaning machine as described in claim 4, characterized in that, The rotating support has a chamfered structure.

6. The adaptive elastic cleaning disc of the window cleaning machine as described in claim 5, characterized in that, The installation unit includes multiple positioning posts and multiple screws. The multiple positioning posts are fixedly connected to the rotating bracket. One end of each screw passes through the cleaning disc body and is tightened onto the corresponding positioning post.

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