Wheel skin of window cleaning machine

Abstract

The utility model relates to the technical field of moving wheels, and provides a wheel cover of a window cleaning machine, which comprises a wheel cover and a middle layer, the wheel cover comprises a wheel cover outer wall and a wheel cover inner wall, and the wheel cover outer wall is directly contacted with the surface of glass; the inner wall of the wheel skin is directly contacted with the surface of the driving wheel; the middle layer is arranged between the wheel skin outer wall and the wheel skin inner wall, the middle layer is made of high-elasticity materials or high-toughness cloth, the limitation of a traditional single structure is abandoned, the design of adding the middle layer is adopted, the middle layer made of the high-elasticity materials and the high-toughness cloth is adopted, and the service life of the wheel skin is prolonged. The overall durability of the wheel skin is effectively improved, the high-elasticity material ensures that the wheel skin can quickly recover to the original shape after being used for a long time and pressed, permanent deformation is reduced, and the high-toughness cloth enhances the resistance to physical damage, such as cutting and abrasion prevention, so that the service life of the wheel skin is prolonged. Therefore, the service life of the wheel leather of the window cleaning machine is prolonged, the glass surface is protected from being scratched, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile wheels, in particular to a wheel skin of a window cleaning machine. Background Art

[0002] With the accelerated pace of life and the diversification of living spaces, automated and semi-automated household cleaning tools are becoming increasingly popular. Window cleaning robots or handheld window cleaning machines, as emerging smart home devices, are designed to help home users complete window cleaning tasks easily and efficiently, especially in high-rise residential buildings, duplex structures or home environments with large glass curtain walls, where window cleaning is traditionally time-consuming and dangerous.

[0003] The wheel design of traditional window cleaning machines is often relatively simple, mainly composed of a single structure. The wheel skin of a single structure is prone to rapid wear during use, lacks effective shock-absorbing measures, and produces large vibrations and noise during operation, affecting the user experience.

[0004] The purpose of the utility model is to solve the problem that the wheel skin of the traditional single structure is prone to rapid wear during frequent use due to the limitations of materials and design, thus shortening the service life of the window cleaning machine, and the lack of effective shock-absorbing design causes the window cleaning machine to generate large vibration and noise during operation, affecting the user experience. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the traditional single-structure wheel skin is easy to wear out quickly during frequent use due to the limitations of material and design, shortening the service life of the window cleaning machine, and the lack of effective shock absorption design makes the window cleaning machine produce large vibration and noise during operation, affecting the user experience. The utility model adopts the following technical solutions:

[0006] A wheel skin of a window cleaning machine, comprising:

[0007] wheel skin and middle layer;

[0008] The wheel skin comprises a wheel skin outer wall and a wheel skin inner wall;

[0009] The outer wall of the wheel skin is in direct contact with the glass surface;

[0010] The inner wall of the wheel skin is in direct contact with the surface of the driving wheel;

[0011] The middle layer is arranged between the outer wall of the wheel skin and the inner wall of the wheel skin, and the middle layer is made of a highly elastic material or a high-toughness cloth.

[0012] The wheel skin of a window cleaning machine as described above has a plurality of grooves formed on its outer wall.

[0013] In the wheel skin of a window cleaning machine as described above, the cross-section of the groove is one or more of a trapezoid, a triangle or an arc.

[0014] In the wheel skin of a window cleaning machine as described above, at least one or more convex strips are fixedly connected to the inner wall of the wheel skin.

[0015] In the wheel skin of a window cleaning machine as described above, the length of the convex strip is consistent with the width of the inner wall of the wheel skin.

[0016] In the above-mentioned wheel skin of a window cleaning machine, the cross section of the convex strip is arc-shaped.

[0017] The wheel skin of a window cleaning machine as described above is made of one or more of silicone rubber, modified polyurethane or fluororubber.

[0018] In the wheel skin of a window cleaning machine as described above, the material of the convex strip is the same as that of the wheel skin.

[0019] In the wheel skin of a window cleaning machine as described above, the cross-section of the middle layer is rectangular.

[0020] In the above-mentioned wheel skin of a window cleaning machine, the material of the middle layer is one or more of thermoplastic elastomer, thermoplastic polyurethane or nitrile rubber.

[0021] Implementing the embodiments of the utility model has the following beneficial effects:

[0022] In the utility model, the limitations of the traditional single structure are abandoned, and a design of adding an intermediate layer is adopted. The intermediate layer is made of highly elastic materials and high-toughness fabrics, which effectively improves the overall durability of the wheel skin. The highly elastic material ensures that the wheel skin can quickly recover its original shape after long-term use and pressure, reducing permanent deformation, while the high-toughness fabric enhances resistance to physical damage, such as preventing cuts and wear, thereby extending the service life of the window cleaning machine wheel skin and protecting the glass surface from scratches, reducing maintenance costs, and the intermediate layer enhances the ability to absorb vibrations and impacts during operation, reduces noise during machine operation, and improves user experience.

[0023] In summary, the utility model solves the problems that the traditional single-structure wheel skin is prone to rapid wear during frequent use due to material and design limitations, shortening the service life of the window cleaning machine, and the lack of effective shock-absorbing design causes the window cleaning machine to generate large vibrations and noise when working, affecting the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 The utility model is a structural schematic diagram of a wheel skin of a window cleaning machine.

[0026] Figure 2 The utility model is a cross-sectional view of a wheel skin of a window cleaning machine.

[0027] Figure 3 The utility model is a structural schematic diagram of a wheel skin of a window cleaning machine installed behind a driving wheel. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figures 1 to 3 As shown, the embodiment of the utility model provides a wheel skin of a window cleaning machine, comprising:

[0030] Wheel skin and middle layer 3;

[0031] The wheel skin comprises a wheel skin outer wall 1 and a wheel skin inner wall 2

[0032] The wheel skin outer wall 1 is in direct contact with the glass surface;

[0033] The inner wall 2 of the wheel skin is in direct contact with the surface of the driving wheel;

[0034] The middle layer 3 is arranged between the outer wall 1 and the inner wall 2 of the wheel skin. The middle layer 3 is used to improve the elasticity, cushioning, durability and structural stability of the wheel skin. The middle layer 3 is made of highly elastic materials and high-toughness fabrics.

[0035] The wheel skin is formed in an integrated manner, for example, by injection molding, during which an intermediate layer 3 is added to the unformed wheel skin. The integrated molding not only enhances the close bonding between the wheel skin components, but also effectively avoids the gap or misalignment problems that may occur in traditional multi-component assembly, further improving the overall sealing and structural strength.

[0036] The inner diameter of the wheel skin is slightly smaller than the outer diameter of the driving wheel, so that the inner wall 2 of the wheel skin fits tightly against the driving wheel, preventing the wheel skin from slipping or falling off when rotating at high speed or with changing workload, thereby enhancing the stability and safety of the window cleaning machine operation.

[0037] The middle layer 3 adopts a design that combines high-elastic material with high-toughness fabric. This design takes into account both elasticity and durability. The high-elastic material ensures sufficient resilience and deformation recovery ability, while the high-toughness fabric enhances the anti-pulling and wear-resistant properties, thereby improving the durability and stability of the wheel skin, extending the service life of the wheel skin, and ensuring the reliability and safety of the wheel skin under long-term use; the middle layer 3 can improve the overall elasticity of the wheel skin and enhance the buffering performance, thereby absorbing vibrations and impacts during operation, reducing noise, and improving user experience.

[0038] Optionally, in some embodiments, the middle layer 3 is made of a highly elastic material. The middle layer 3 made of a highly elastic material can quickly return to its original shape after being subjected to pressure, reducing the possibility of permanent deformation, thereby extending the service life of the wheel skin. The highly elastic middle layer 3 can effectively absorb mechanical vibration and impact, reduce the physical burden on the wheel skin and the entire machine, reduce operating noise, and improve the comfort of users and the environment.

[0039] Optionally, in some embodiments, the middle layer 3 is made of high-toughness fabric. The introduction of the middle layer 3 made of high-toughness fabric can enhance the internal structural strength of the wheel skin, and can effectively prevent the internal structure of the wheel skin from being deformed or damaged even when used for a long time or encountering external impacts such as strong friction and extrusion; the unique flexibility of the fabric helps to absorb the vibration generated by the window cleaning machine during operation, reduce the noise transmitted to the machine body and the environment, and improve the user experience.

[0040] Furthermore, as a preferred embodiment of the present invention but not a limitation, the outer wall of the wheel skin outer wall 1 is provided with a plurality of grooves 101. The grooves 101 allow more friction points to be formed between the wheel skin and the glass during the cleaning process, so that the wheel skin outer wall 1 maintains a good grip, prevents sliding, and ensures the stability and safety of the cleaning work; the grooves 101 can serve as a guide channel for water flow, helping to gather and guide the water on the glass surface to flow in a specific direction, so that it can be taken away or evaporated by the window cleaning machine later, and avoid water droplets from remaining and forming water stains.

[0041] Optionally, in some embodiments, the outer wall of the wheel skin outer wall 1 is designed to be flat, which reduces the protrusion when in contact with the glass surface, reduces the risk of accidental scratches caused by foreign matter or hard particles, and is suitable for environments with high requirements for glass surface protection.

[0042] Furthermore, as a preferred embodiment of the present invention but not limiting, the cross section of the groove 101 is one or more of a trapezoidal shape, a triangle shape or an arc shape.

[0043] Optionally, in some embodiments, the cross-section of the groove 101 is trapezoidal. The trapezoidal-shaped groove 101 can provide a gradually varying contact area. The structure of being wide at the top and narrow at the bottom can enhance the inclusiveness and stability during initial contact, and at the same time, it also helps to effectively discharge the liquid later.

[0044] Further, as a preferred embodiment of the present invention but not a limitation, the inner wall of the inner wall 2 of the wheel skin is fixedly connected with at least one or more convex strips 201. The close contact or embedded connection between the convex strips 201 and the surface of the driving wheel increases the friction and bite force between the inner wall 2 of the wheel skin and the driving wheel, ensuring that the wheel skin will not slip when rotating at high speed or bearing a large torque. The convex strips 201 can be used as a force transmission point to more efficiently transmit the driving force of the motor to the outer wall of the wheel skin, reduce the power loss during the transmission process, and make the power response of the window cleaning machine faster and the operation smoother.

[0045] Optionally, in some embodiments, the inner wall of the wheel skin inner wall 2 is fixedly connected with a plurality of convex strips 201, and the plurality of convex strips 201 are arranged at equal distances on the inner wall of the wheel skin 2 along the circumferential direction of the wheel skin inner wall 2. The equidistant layout of the convex strips 201 can ensure that when the driving wheel rotates, the pressure exerted by each convex strip on the contact surface is evenly distributed, thereby reducing local overload and improving stability during use.

[0046] Further, as a preferred embodiment of the present invention but not a limitation, the length of the convex strip 201 is consistent with the width of the wheel skin inner wall 2. The convex strip 201 extends along the entire wheel skin width, so that the convex strip 201 can provide the maximum support or friction force at any given contact point and evenly distribute the load; the longer convex strip 201 can be regarded as a reinforcing rib to enhance the overall structural strength of the wheel skin inner wall 2.

[0047] Further, as a preferred embodiment of the present invention but not a limitation, the cross section of the convex strip 201 is arc-shaped. The arc-shaped cross section can provide a smooth and continuous contact surface when in contact with the driving wheel, reducing local stress concentration and making the force transmission more uniform, thereby protecting the driving wheel and the convex strip from damage and extending the service life.

[0048] Optionally, in some embodiments, the cross section of the convex strip 201 is a trapezoid. The wider bottom edge of the trapezoidal cross section can better fill and engage with the corresponding groove after installation, providing better friction and anti-slip performance.

[0049] Furthermore, as a preferred embodiment of the present invention but not limiting, the material of the wheel skin is one or more of silicone rubber, modified polyurethane or fluororubber.

[0050] Optionally, in some embodiments, the wheel skin is made of silicone rubber. Silicone rubber can withstand a wide temperature range, which makes the wheel skin made of it highly adaptable to external temperature. Silicone material has good tolerance to most chemicals and is not easily corroded by oil, water, solvents, etc., which makes the wheel skin have excellent chemical stability and can adapt to different window cleaners. Silicone rubber has strong resistance to external environmental factors such as ultraviolet rays, humidity, and ozone, which makes the wheel skin not easy to age, discolor or performance degradation during long-term outdoor use.

[0051] Optionally, in some embodiments, the wheel skin is made of modified polyurethane. The wheel skin made of modified polyurethane material has excellent wear resistance and can withstand long-term friction without easy wear, which makes the wheel skin not easy to wear even if it moves frequently, greatly extending the service life of the wheel skin; the hardness of the modified polyurethane can be adjusted according to application requirements, and there are corresponding formulas from soft to hard, which provides great flexibility for the design of the inner wall 2 of the wheel skin, and the most suitable hardness can be selected according to the specific load, speed and ground conditions to optimize performance.

[0052] Optionally, in some embodiments, the wheel skin is made of fluororubber, which also has extremely high chemical stability and excellent weather resistance.

[0053] Furthermore, as a preferred embodiment of the present invention but not a limitation, the material of the convex strip 201 is the same as that of the wheel skin. By maintaining the consistency of the material of the convex strip 201 and the wheel skin, the consistency of the physical properties of the entire wheel skin assembly can be ensured, thereby facilitating the stable performance of the window cleaning machine under different conditions. The consistency of the material of the convex strip 201 and the wheel skin enables the convex strip 201 and the wheel skin to be integrally formed, thereby simplifying the manufacturing and assembly process.

[0054] Optionally, in some embodiments, the convex strip 201 is made of a material different from the wheel skin. The convex strip 201 is made of a material that is more wear-resistant than the wheel skin, thereby increasing the friction and bite force between the convex strip 201 and the driving wheel; the convex strip 201 is made of a material that is softer than the wheel skin, thereby increasing the shock absorption effect of the wheel skin.

[0055] Further, as a preferred embodiment of the present invention but not a limitation, the cross section of the intermediate layer 3 is rectangular. The rectangular cross section can provide a wider contact area, making the connection interface between the intermediate layer 3 and the wheel skin more solid, ensuring that it is not easy to twist or disengage when subjected to force, and improving the stability and reliability of the overall structure; the rectangular cross section can more evenly distribute external force and torque. When the wheel is subjected to loads in different directions, the rectangular structure can effectively avoid stress concentration, reduce the risk of local damage, and increase the service life of the wheel.

[0056] Furthermore, as a preferred embodiment of the present invention but not limiting, the material of the intermediate layer 3 is one or more of thermoplastic elastomer, thermoplastic polyurethane, nitrile rubber, aramid cloth or silicone cloth.

[0057] Optionally, in some embodiments, the material of the middle layer 3 is a combination of thermoplastic elastomer and aramid cloth. The high elasticity of the thermoplastic elastomer enables the middle layer to effectively absorb and alleviate the machine vibration during the window cleaning process, reduce operating noise, and improve the user's operating experience; the flexibility and good sealing performance of the thermoplastic elastomer ensure that the wheel skin and the middle layer 3 fit tightly; the low creep characteristics of the thermoplastic elastomer ensure that it can still maintain a good fastening state under long-term use, thereby reducing the displacement of the wheel skin during high-speed rotation or load changes; the aramid cloth itself has excellent wear resistance and tear resistance, and being set inside the wheel skin can effectively disperse and absorb the mechanical stress generated during window cleaning, reduce wear, and extend the service life of the wheel skin; the high elasticity and fiber structure of the aramid cloth can absorb the vibration and shock waves generated during the operation of the window cleaning machine, reduce noise, and improve the user's operating experience; the light and thin characteristics of the aramid cloth make it set inside the wheel skin without significantly increasing the extra volume or weight.

[0058] Optionally, in some embodiments, the middle layer 3 is made of thermoplastic polyurethane. The middle layer 3 made of polyurethane has good elasticity and shock-absorbing properties, can effectively absorb the vibration and impact force generated during window wiping, and reduce noise; polyurethane has excellent adhesion, which ensures a firm connection between the middle layer 3 and the wheel skin, avoids delamination or falling off, and improves the structural strength of the entire wheel skin assembly.

[0059] Optionally, in some embodiments, the material of the middle layer 3 is nitrile rubber. The middle layer 3 made of nitrile rubber has appropriate mechanical strength, including good expansion strength, elongation and tear resistance, and can withstand the mechanical stress of the window cleaning machine during operation, such as torsion, tension and compression, to ensure the stability and reliability of the wheel skin; the middle layer 3 made of nitrile rubber has good elastic recovery, can effectively absorb vibration and impact, reduce noise during operation, and improve the smoothness and comfort of the window cleaning machine.

[0060] Optionally, in some embodiments, the middle layer 3 is made of aramid cloth.

[0061] Optionally, in some embodiments, the middle layer 3 is made of silicone cloth.

[0062] like Figures 1 to 3 As shown, the implementation method of Example 1 is as follows:

[0063] A wheel skin of a window cleaning machine, comprising:

[0064] Wheel skin and middle layer 3;

[0065] The wheel skin comprises a wheel skin outer wall 1 and a wheel skin inner wall 2

[0066] The wheel skin outer wall 1 is in direct contact with the glass surface;

[0067] The inner wall 2 of the wheel skin is in direct contact with the surface of the driving wheel;

[0068] The middle layer 3 is arranged between the outer wall 1 and the inner wall 2 of the wheel skin. The middle layer 3 is used to improve the elasticity, cushioning, durability and structural stability of the wheel skin. The middle layer 3 is made of highly elastic materials and high-toughness fabrics.

[0069] The wheel skin is integrally molded, which not only enhances the tightness between the wheel skin components, but also effectively avoids the gap or misalignment problems that may occur in traditional multi-component assembly, further improving the overall sealing and structural strength.

[0070] The inner diameter of the wheel skin is slightly smaller than the outer diameter of the driving wheel, so that the inner wall 2 of the wheel skin fits tightly against the driving wheel, preventing the wheel skin from slipping or falling off when rotating at high speed or with changing workload, thereby enhancing the stability and safety of the window cleaning machine operation.

[0071] The middle layer 3 adopts a design that combines high-elastic material with high-toughness fabric. This design takes into account both elasticity and durability. The high-elastic material ensures sufficient resilience and deformation recovery ability, while the high-toughness fabric enhances the anti-pulling and wear-resistant properties, thereby improving the durability and stability of the wheel skin, extending the service life of the wheel skin, and ensuring the reliability and safety of the wheel skin under long-term use; the middle layer 3 can improve the overall elasticity of the wheel skin and enhance the buffering performance, thereby absorbing vibrations and impacts during operation, reducing noise, and improving user experience.

[0072] The outer wall of the wheel skin outer wall 1 is provided with a plurality of grooves 101. The grooves 101 form more friction points between the wheel skin and the glass during the cleaning process, so that the wheel skin outer wall 1 maintains a good grip, prevents sliding, and ensures the stability and safety of the cleaning work; the grooves 101 can serve as a guide channel for water flow, helping to gather and guide the water on the glass surface to flow in a specific direction, so that it can be taken away or evaporated by the window cleaning machine later, and avoid residual water droplets to form water stains.

[0073] The cross section of the groove 101 is a trapezoid. The trapezoidal design of the groove 101 can provide a gradually changing contact area. The structure of being wide at the top and narrow at the bottom can improve the tolerance and stability during the initial contact, and at the same time, it can also help to effectively discharge the liquid in the later stage.

[0074] The inner wall of the inner wall 2 of the wheel skin is fixedly connected with a plurality of convex strips 201, and the plurality of convex strips 201 are arranged at equal distances on the inner wall of the wheel skin 2 along the circumferential direction of the inner wall 2 of the wheel skin. The equidistant layout of the convex strips 201 can ensure that when the driving wheel rotates, the pressure exerted by each convex strip on the contact surface is evenly distributed, reducing local overload and improving stability during use; the close contact or embedded connection between the convex strips 201 and the surface of the driving wheel increases the friction and bite force between the inner wall 2 of the wheel skin and the driving wheel, ensuring that the wheel skin will not slip when rotating at high speed or bearing a large torque, and the convex strips 201 can be used as a force transmission point to more efficiently transmit the driving force of the motor to the outer wall of the wheel skin, reducing the power loss during the transmission process, so that the power response of the window cleaning machine is faster and the operation is smoother.

[0075] The length of the convex strip 201 is consistent with the width of the wheel skin inner wall 2. The convex strip 201 extends along the entire wheel skin width, so that the convex strip 201 can provide maximum support or friction at any given contact point and evenly distribute the load; the longer convex strip 201 can be regarded as a reinforcing rib to enhance the overall structural strength of the wheel skin inner wall 2.

[0076] The cross section of the convex strip 201 is arc-shaped. When the arc-shaped cross section contacts the driving wheel, it can provide a smooth and continuous contact surface, reduce local stress concentration, make the force transmission more uniform, thereby protecting the driving wheel and the convex strip from damage and extending the service life.

[0077] The wheel skin is made of modified polyurethane. The wheel skin made of modified polyurethane material has excellent wear resistance and can withstand long-term friction without easy wear, which makes the wheel skin not easy to wear even if it moves frequently, greatly extending the service life of the wheel skin; the hardness of the modified polyurethane can be adjusted according to application requirements, and there are corresponding formulas from soft to hard, which provides great flexibility for the design of the inner wall 2 of the wheel skin, and the most suitable hardness can be selected according to the specific load, speed and ground conditions to optimize performance.

[0078] The material of the convex strip 201 is the same as that of the wheel skin. By maintaining the consistency of the material of the convex strip 201 and the wheel skin, the consistency of the physical properties of the entire wheel skin assembly can be ensured, thereby facilitating the stable performance of the window cleaning machine under different conditions. The consistency of the material of the convex strip 201 and the wheel skin enables the convex strip 201 and the wheel skin to be integrally formed, thereby simplifying the manufacturing and assembly process.

[0079] The cross section of the intermediate layer 3 is rectangular. The rectangular cross section can provide a wider contact area, making the connection interface between the intermediate layer 3 and the wheel skin more solid, ensuring that it is not easy to twist or disengage when subjected to force, and improving the stability and reliability of the overall structure; the rectangular cross section can more evenly distribute external force and torque. When the wheel is subjected to loads in different directions, the rectangular structure can effectively avoid stress concentration, reduce the risk of local damage, and increase the service life of the wheel.

[0080] The material of the middle layer 3 is a combination of thermoplastic elastomer and aramid cloth. The high elasticity of the thermoplastic elastomer enables the middle layer to effectively absorb and alleviate the machine vibration during the window cleaning process, reduce operating noise, and improve the user's operating experience; the flexibility and good sealing performance of the thermoplastic elastomer ensure that the wheel skin and the middle layer 3 fit tightly; the low creep characteristics of the thermoplastic elastomer ensure that it can still maintain a good fastening state under long-term use, thereby reducing the displacement of the wheel skin during high-speed rotation or load changes; the aramid cloth itself has excellent wear resistance and tear resistance. It can effectively disperse and absorb the mechanical stress generated during window cleaning when it is set inside the wheel skin, reduce wear, and extend the service life of the wheel skin; the high elasticity and fiber structure of the aramid cloth can absorb the vibration and shock waves generated when the window cleaning machine is running, reduce noise, and improve the user's operating experience; the light and thin characteristics of the aramid cloth make it set inside the wheel skin without significantly increasing the extra volume or weight.

[0081] The implementation method of the second embodiment is as follows:

[0082] The difference between the second embodiment and the first embodiment is that the middle layer 3 is made of a highly elastic material. The middle layer 3 made of a highly elastic material can quickly return to its original shape after being subjected to pressure, reducing the possibility of permanent deformation, thereby extending the service life of the wheel skin. The highly elastic middle layer 3 can effectively absorb mechanical vibration and impact, reduce the physical burden on the wheel skin and the entire machine, reduce operating noise, and improve the comfort of users and the environment.

[0083] The material of the middle layer 3 is thermoplastic elastomer. The high elasticity of the thermoplastic elastomer enables the middle layer to effectively absorb and alleviate the machine vibration during the window cleaning process, reduce operating noise, and improve the user's operating experience; the flexibility and good sealing performance of the thermoplastic elastomer ensure that the wheel skin and the middle layer 3 fit tightly; the low creep property of the thermoplastic elastomer ensures that it can still maintain a good fastening state under long-term use, thereby reducing the displacement of the wheel skin during high-speed rotation or load changes.

[0084] The implementation method of the third embodiment is as follows:

[0085] The difference between the third embodiment and the first embodiment is that the middle layer 3 is made of high-toughness fabric. The introduction of the middle layer 3 made of high-toughness fabric can enhance the internal structural strength of the wheel skin, and can effectively prevent the internal structure of the wheel skin from being deformed or damaged even when used for a long time or encountering external impacts such as strong friction and extrusion; the unique flexibility of the fabric helps to absorb the vibration generated by the window cleaning machine during operation, reduce the noise transmitted to the machine body and the environment, and improve the user experience.

[0086] The material of the middle layer 3 is aramid cloth. Aramid cloth itself has excellent wear resistance and tear resistance. When it is set inside the wheel skin, it can effectively disperse and absorb the mechanical stress generated during the window cleaning process, reduce wear and tear, and extend the service life of the wheel skin; the high elasticity and fiber structure of aramid cloth can absorb the vibration and shock waves generated when the window cleaning machine is running, reduce noise, and improve the user's operating experience; the light and thin characteristics of aramid cloth make it set inside the wheel skin without significantly increasing the extra volume or weight.

[0087] The implementation method of the fourth embodiment is as follows:

[0088] The difference between Example 4 and Example 1 is that the outer wall of the wheel skin outer wall 1 adopts a flat design. The flat outer wall reduces the raised part when contacting the glass surface, reduces the risk of accidental scratches caused by foreign matter or hard particles, and is suitable for environments with high requirements for glass surface protection.

[0089] To sum up, the utility model solves the problems that the traditional single-structure wheel skin is prone to rapid wear during frequent use due to material and design limitations, shortening the service life of the window cleaning machine, and the lack of effective shock-absorbing design causes the window cleaning machine to generate large vibrations and noise during operation, affecting the user experience.

[0090] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0091] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A wheel skin of a window cleaning machine, characterized in that: include: Wheel skin and middle layer (3); The wheel skin comprises a wheel skin outer wall (1) and a wheel skin inner wall (2) The outer wall of the wheel skin (1) is in direct contact with the glass surface; The inner wall of the wheel skin (2) is in direct contact with the surface of the driving wheel; The middle layer (3) is arranged between the wheel skin outer wall (1) and the wheel skin inner wall (2), and the middle layer (3) is made of a highly elastic material and / or a highly tenacious fabric.

2. The wheel skin of a window cleaning machine according to claim 1, characterized in that: The outer wall (1) of the wheel skin is provided with a plurality of grooves (101).

3. The wheel skin of a window cleaning machine according to claim 2, characterized in that: The cross section of the groove (101) is one or more of a trapezoidal shape, a triangular shape or an arc shape.

4. The wheel skin of a window cleaning machine according to claim 1, characterized in that: At least one or more convex strips (201) are fixedly connected to the inner wall (2) of the wheel skin.

5. The wheel skin of a window cleaning machine according to claim 4, characterized in that: The length of the convex strip (201) is consistent with the width of the inner wall (2) of the wheel skin.

6. The wheel skin of a window cleaning machine according to claim 4, characterized in that: The cross section of the convex strip (201) is in the shape of an arc.

7. The wheel skin of a window cleaning machine according to claim 1, characterized in that: The wheel skin is made of modified polyurethane.

8. The wheel skin of a window cleaning machine according to claim 4, characterized in that: The material of the convex strip (201) is the same as that of the wheel skin.

9. The wheel skin of a window cleaning machine according to claim 1, characterized in that: The cross section of the intermediate layer (3) is rectangular.

10. The wheel skin of a window cleaning machine according to claim 1, characterized in that: The material of the intermediate layer (3) is thermoplastic elastomer.

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