Multi-surface contact cleaning roller mechanism and cleaning appliance

Abstract

The invention is suitable for the technical field of cleaning equipment. The invention discloses a multi-surface contact cleaning roller mechanism and a cleaning appliance, and the multi-surface contact cleaning roller mechanism and the cleaning appliance comprise a cleaning roller, a contact water squeezing strip and a water diversion strip, and the contact water squeezing strip and the water diversion strip form a cleaning surface with the surface of the cleaning roller. The cleaning roller mechanism further comprises a first pressing plate making contact with the surface of the cleaning roller to form a first contact face and a second pressing plate making contact with the surface of the cleaning roller to form a second contact face. When the cleaning roller works, at least two contact surfaces are formed on the surface to support the cleaning roller, and the contact surfaces of the cleaning surfaces of the cleaning roller pass through the axis extension line of the cleaning roller and are located in the angle formed by the two first pressing plates and the second pressing plates and the axis. By means of the structure, it can be avoided that when the cleaning roller works, stress of the rotating shaft in the vertical direction is increased, the load of the rotating shaft is too large, stress is more uniform in the radial direction, and vibration deviating from the axis in high-speed rotation of the cleaning roller is reduced.

Description

[0001] This application is a divisional application of Chinese patent application number 202210525313.3, and invention name is “A multi-surface contact cleaning roller mechanism and cleaning device”, the contents of which are incorporated herein by reference. Technical Field

[0002] The present invention relates to the technical field of cleaning machinery, and in particular to a multi-surface contact cleaning roller mechanism and a cleaning device. Background Art

[0003] With the advancement of technology, people's requirements for floor cleaning tools have gradually increased. A new cleaning mechanism has emerged. After the dust on the cleaning surface is adsorbed by a cleaning stick, the dust is removed from the cleaning stick by using water through an online water cleaning method. This mechanism is called "water-dust circulation." Cleaning equipment that uses this mechanism is also called a "water-dust circulation" floor scrubber. The water-dust circulation floor scrubber uses the operation of the motor to drive the cleaning cylinder to wipe the floor. The cleaning cylinder usually adopts a sponge cylinder structure. At the same time, the floor cleaner is also equipped with a water supply system to clean the cleaning cylinder, thereby perfectly cleaning the floor. In order to clean the cleaning cylinder, an enclosed cleaning space connected to the water supply system is usually set up to clean the local cylinder. Clean water is provided to clean the cleaning cylinder, and then the sewage from cleaning the cleaning cylinder is pumped away.

[0004] Chinese patent document CN212698746U discloses a water pressure plate assembly, a cleaning head, and a cleaning tool for a cleaning tool. The water pressure plate assembly includes a water pressure plate with a transparent window and a scraper connected to the water pressure plate. However, the curved working strip on the water pressure plate and the drainage portion of the scraper create an interference fit with the cleaning roller at two points on the same side. Even if the force is applied perpendicular to the tangent direction of the cleaning roller and toward the axis, the force applied on the same side can easily cause the cleaning roller to vibrate away from the axis during high-speed rotation, generating noise and causing significant wear on the rotating ends of the cleaning roller. Summary of the Invention

[0005] The main technical problem solved by the present invention is to provide a multi-surface contact cleaning roller mechanism and a cleaning device, wherein the multi-surface contact cleaning roller mechanism can make the cleaning roller more evenly stressed in the radial direction, thereby reducing the vibration of the cleaning roller that deviates from the axis during high-speed rotation.

[0006] In order to solve the above problems, the present invention provides a multi-surface contact cleaning roller mechanism, which includes a cleaning roller and a contact water squeeze bar and a water guide bar that form a cleaning surface with the surface of the cleaning roller. The cleaning roller mechanism also includes a first pressure plate that contacts the surface of the cleaning roller to form a first contact surface and a second pressure plate that forms a second contact surface.

[0007] Furthermore, the first pressing plate is located outside the water squeezing bar, and the second pressing plate is located between the water guide bar and the surface of the cleaning roller.

[0008] Furthermore, the first pressing plate and the second pressing plate respectively include elastic rubber.

[0009] Furthermore, the first pressing plate and the second pressing plate are arc-shaped in cross-section along the width direction.

[0010] Furthermore, the first pressing plate is movably connected to the water squeezing strip.

[0011] Furthermore, the water squeezing strip is provided with a fixing groove, and the first pressing plate is provided with a fixing strip that cooperates with the fixing groove.

[0012] Furthermore, a variable chamber is provided between the second pressure plate and the water guide bar.

[0013] Furthermore, the variable chamber is a sealed structure.

[0014] Furthermore, the upper and lower sides of the second pressing plate respectively extend outward along the arc of the surface of the cleaning roller and exceed the extension of the water guide bar.

[0015] Furthermore, the cross section of the extension portion along the width direction is triangular.

[0016] Furthermore, the contact points pointing to the axis formed by the first pressing plate and the second pressing plate with the surface of the cleaning roller respectively form an angle with the axis, and the angle is 60-180 degrees.

[0017] Furthermore, the multi-surface contact cleaning roller mechanism also includes a third pressure plate that is interference fit with the surface of the cleaning roller, and the contact points pointing to the axis formed by the third pressure plate and the first pressure plate with the surface of the cleaning roller respectively form an angle of not less than 120 degrees with the axis.

[0018] Furthermore, the third pressing plate is made of an elastically deformable material.

[0019] Furthermore, the cross section of the third pressing plate along the width direction is designed to be arc-shaped, and the third pressing plate is provided with a plurality of spaced supporting ribs along the axial direction of the cleaning roller.

[0020] Furthermore, the support ribs fit the cleaning roller along the circumferential direction of the cleaning roller.

[0021] The present invention provides a cleaning device, comprising a cleaning head provided with a shell, the cleaning head being provided with a multi-surface contact cleaning roller mechanism, the multi-surface contact cleaning roller mechanism comprising a cleaning roller and a contact water squeezing strip and a water guide strip forming a cleaning surface with the surface of the cleaning roller, the cleaning roller mechanism also comprising a first pressure plate forming a first contact surface with the surface of the cleaning roller and a second pressure plate forming a second contact surface.

[0022] Furthermore, the first pressing plate is located outside the water squeezing bar, and the second pressing plate is located between the water guide bar and the surface of the cleaning roller.

[0023] Furthermore, the first pressing plate and the second pressing plate respectively include elastic rubber.

[0024] Furthermore, the first pressing plate and the second pressing plate are arc-shaped in cross-section along the width direction.

[0025] Furthermore, the first pressing plate is movably connected to the water squeezing strip.

[0026] Furthermore, the water squeezing strip is provided with a fixing groove, and the first pressing plate is provided with a fixing strip that cooperates with the fixing groove.

[0027] Furthermore, a variable chamber is provided between the second pressure plate and the water guide bar.

[0028] Furthermore, the variable chamber is a sealed structure.

[0029] Furthermore, the upper and lower sides of the second pressing plate respectively extend outward along the arc of the surface of the cleaning roller and exceed the extension of the water guide bar.

[0030] Furthermore, the cross section of the extension portion along the width direction is triangular.

[0031] Furthermore, a variable gap is provided between the first pressure plate and the shell.

[0032] Furthermore, the contact points pointing to the axis formed by the first pressing plate and the second pressing plate with the surface of the cleaning roller respectively form an angle with the axis, and the angle is 60-180 degrees.

[0033] Furthermore, the multi-surface contact cleaning roller mechanism also includes a third pressure plate that is interference fit with the surface of the cleaning roller, and the contact points pointing to the axis formed by the third pressure plate and the first pressure plate with the surface of the cleaning roller respectively form an angle of not less than 120 degrees with the axis.

[0034] Furthermore, a variable gap is provided between the first pressure plate and the shell.

[0035] The present invention discloses a multi-surface contact cleaning roller mechanism and cleaning device, wherein the multi-surface contact cleaning roller mechanism includes a cleaning roller and contact water squeezers and water guides that form a cleaning surface with the surface of the cleaning roller. The cleaning roller mechanism also includes a first pressure plate that contacts the surface of the cleaning roller to form a first contact surface and a second pressure plate that forms a second contact surface. Because at least two contact surfaces are formed on the surface of the cleaning roller during operation to support it, and the contact surface of the cleaning roller is located within the angle formed by the first and second pressure plates and the axis through the extension line of the axis of the cleaning roller, this can prevent uneven surface force on the cleaning roller during operation, which would otherwise cause an increase in force perpendicular to the rotating shaft and result in excessive load on the rotating shaft. The force applied in the radial direction is more uniform, reducing vibration caused by the cleaning roller deviating from the axis during high-speed rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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 exceeding the scope of protection required by this application.

[0037] Figure 1 This is a schematic cross-sectional view of the first embodiment of the multi-surface contact cleaning roller mechanism along the vertical direction of the cleaning roller's rotating shaft.

[0038] Figure 2 This is an enlarged schematic diagram of the local structure of the multi-surface contact cleaning roller mechanism.

[0039] Figure 3 for Figure 1 The structure of part A is enlarged in the schematic diagram.

[0040] Figure 4 This is a schematic cross-sectional view of the second embodiment of the multi-surface contact cleaning roller mechanism along the vertical direction of the cleaning roller's rotating shaft.

[0041] Figure 5 This is a schematic cross-sectional view of the third embodiment of the multi-surface contact cleaning roller mechanism along the vertical direction of the cleaning roller's rotating shaft.

[0042] Reference numerals:

[0043] Cleaning roller 1, first pressing plate 2, first pressing plate variable chamber 23, water guide bar assembly 3, second pressing plate 31, water guide bar 32, variable chamber 33, water squeezing bar 4, cleaning roller cover 5, third pressing plate 6, cleaning brush 7, shell 8.

[0044] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0045] The following is a further detailed description of the claims of the present invention in conjunction with specific embodiments and accompanying drawings. It is obvious that the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments proposed by ordinary technicians in this field without making creative efforts are also within the scope of protection of the present invention.

[0046] It should be understood that, in the description of the embodiments of the present invention, all directional indication terms, such as "up," "down," "left," "right," "front," "back," etc., indicate positions or positional relationships based on the positions and positional relationships shown in the accompanying drawings or the positions or positional relationships in which the inventive product is typically placed when in use. These terms are intended only to simplify the description of the present invention and do not explicitly or implicitly indicate that the devices, elements, or components referred to must have a specific position or specific directional structure, and should not be construed as limiting the present invention. They are only used to explain the relative positional relationships and movement conditions between the components shown in the accompanying drawings. When the specific posture changes, the directional indication may also change accordingly.

[0047] Furthermore, ordinal numbers such as "first" and "second" in this disclosure are used solely for distinction purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. The terms "first" and "second" may explicitly or implicitly indicate at least one of the technical features. In this disclosure, "plurality" means at least two, i.e., two or more, unless otherwise expressly specified; and "at least one" means one, one, or more.

[0048] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can mean that the positional relationship between components is relatively fixed, or that the components are physically fixedly connected. It can be a detachable connection or an integrated structure. It can be a mechanical connection or an electrical signal connection. It can be a direct connection or an indirect connection through an intermediate medium or component. It can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined in the specification, other understandings may not achieve the corresponding functions or effects. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The controllers and control circuits involved in the present invention are conventional control technologies or units known to those skilled in the art. For example, the control circuits of the controllers can be implemented by those skilled in the art using existing technologies, such as simple programming. Regarding software or programs that work with hardware to achieve control results, if the description does not provide a detailed description of the software or program control process involved, then the existing technologies or conventional technologies known to those skilled in the art are used. The power supply also uses the existing technologies described above, and the main technical point of the present invention is to improve the mechanical device. Therefore, the present invention will not further describe the specific circuit control relationships and circuit connections.

[0050] The disclosure of the present invention provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described in the present invention. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0051] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0052] The solution of this application will be described in detail below with reference to the accompanying drawings.

[0053] Example 1:

[0054] like Figure 1-Figure 3 As shown, the present invention provides a multi-surface contact cleaning roller mechanism, which includes a cleaning roller 1 and a contact water squeeze bar 4 and a water guide bar 32 that form a cleaning surface with the surface of the cleaning roller 1. The cleaning roller mechanism also includes a first pressure plate 2 that contacts the surface of the cleaning roller 1 to form a first contact surface and is located outside the water squeeze bar 4, and a second pressure plate 31 that forms a second contact surface and is located between the water guide bar 32 and the surface 1 of the cleaning roller.

[0055] In order to facilitate the connection and fixation between the first pressure plate 2 and the water squeezing bar 4, at least one fixing groove is provided on the water squeezing bar 4, and correspondingly at least one fixing bar cooperating with the fixing groove is provided on the first pressure plate 2. During assembly, the fixing bar is placed in the fixing groove to realize the movable connection between the first pressure plate 2 and the water squeezing bar 4.

[0056] To give the first pressure plate 2 a greater rebound effect and deformation space, a number of first pressure plate variable cavities 23, formed by elastic strips 21, are provided between the first pressure plate 2 and the cleaning roller cover 5. To achieve a better rebound effect, the elastic strips are spaced vertically in a horizontal plane with the ground as the horizontal line. The design of the elastic strips 21 allows the first pressure plate 2 to have a larger deformation space while reducing the force on the cleaning roller 1. When an external force is transmitted to the water squeezer 4 through the roller cover 5, the design of the elastic strips can effectively disperse the external force exerted on the water squeezer 4, thereby not affecting the normal operation of the cleaning roller 1. When the cleaning device is in use, the first pressure plate 2 contacts the surface of the cleaning roller after being squeezed by the water squeezer 4. In the process of restoring the squeezed cleaning roller surface to a free state under the action of the cleaning roller's elastic material, the first pressure plate variable cavity 23 of the first pressure plate 2 just "absorbs" the impact of the cleaning roller surface on the cleaning roller cover 5. Because there is a small height difference or close to flushness between the first pressure plate and the water squeezing bar in this embodiment, the surface of the cleaning roller after squeezing can smoothly transition to a free state under the action of the elastic material of the cleaning roller, and the process of "absorbing" the impact of the cleaning roller surface on the cleaning roller cover 5 will not generate noise.

[0057] In this embodiment, the second pressure plate 31 and the water guide bar 32 are integrally formed. The water guide bar is located at one end away from the cleaning roller, and the second pressure plate is located on the opposite end surface and contacts the surface of the cleaning roller. To provide a certain buffering force when the second pressure plate is subjected to force, at least one variable chamber 33 with a sealed structure is provided between the second pressure plate and the water guide bar. In accordance with the present design, there are two variable chambers 33, one at each end of the second pressure plate. To ensure a larger contact surface between the second pressure plate and the surface of the cleaning roller, the upper and lower sides of the second pressure plate extend outward along the curvature of the cleaning roller surface, extending beyond the extension of the water guide bar. This structural design ensures that the width of the water guide bar 3 is smaller than that of the second pressure plate 5.

[0058] like Figure 3 As shown, in order to allow the entire water guide bar assembly 3 to "hold" more water at one end pointing to the water squeeze bar, the extension of the second pressure plate at the end pointing to the water squeeze bar has a triangular cross-section along the width direction, so that the sewage squeezed out by the water squeeze bar can be smoothly discharged from the cleaning drum under the guidance of the water guide bar assembly. In order to prevent the cleaning brush 7 from sliding and rubbing against the surface of the cleaning drum and causing excessive impact on the other end of the water guide bar assembly (the end of the second pressure plate facing away from the water squeeze bar), the extension of the second pressure plate at the end facing away from the water squeeze bar has a triangular cross-section along the width direction, so that the brush tip of the cleaning brush 7 can smoothly run along the arc corresponding to the upper surface of the shell and the cleaning brush after the "wedge-shaped" transition, thereby reducing the impact on the end of the second pressure plate facing away from the water squeeze bar in the "non-wedge-shaped" structure, and reducing the noise generated by the cleaning brush 7 during operation.

[0059] As a variation of this solution, there are more than two variable chambers 33 with a single-layer sealing structure, evenly distributed on the contact surface between the second pressure plate 31 and the water guide bar 32. This design allows the second pressure plate to have a larger contact surface with the surface of the cleaning roller, while also allowing more variable chambers 33 on the contact surface between the second pressure plate 31 and the water guide bar 32 to further "absorb" the impact of the cleaning roller surface on the second pressure plate 31 during actual use. As a variation of this solution, a variable chamber 33 with a multi-layer sealing structure is provided between the second pressure plate and the water guide bar. This allows more radially distributed multi-layer variable chambers 33 on the contact surface between the second pressure plate 31 and the water guide bar 32 to further "absorb" the impact of the cleaning roller surface on the second pressure plate 31 during actual use.

[0060] In this embodiment, the first pressure plate and the second pressure plate are both in contact with the surface of the cleaning roller. Since the surface of the cleaning roller is made of an elastic and deformable material, in order to prevent hard materials from damaging the surface of the cleaning roller, the first pressure plate and the second pressure plate are both made of an elastic and deformable material, such as elastic rubber. In order to avoid an increase in the vertical force on the rotating shaft due to uneven surface force during operation of the cleaning roller, which would cause excessive load on the rotating shaft, and to make the radial force more uniform, thereby reducing the vibration of the cleaning roller that deviates from the axis during high-speed rotation, the first pressure plate and the second pressure plate are each arc-shaped in cross-section along the width direction. This arc-shaped design can effectively make the first and second pressure plates fit more closely with the cleaning roller, and at the same time disperse them in the circumferential direction of the cleaning roller to form two contacts, effectively dispersing the radial force generated between the cleaning surface and the cleaning surface during cleaning, so that the cleaning roller shaft is subjected to uniform force in the circumferential direction, thereby avoiding the vibration of the cleaning roller that deviates from the axis during high-speed rotation.

[0061] In order to prevent uneven force on the surface of the cleaning roller, which increases the force on the rotating shaft in the vertical direction and causes excessive load on the rotating shaft, and to reduce the vibration of the cleaning roller that deviates from the axis during high-speed rotation, the cleaning roller mechanism also includes a third pressure plate 6 that is interference fit with the surface of the cleaning roller 1. The third pressure plate 6 is in contact with the surface of the cleaning roller. Since the surface of the cleaning roller is made of elastic deformable material, in order to prevent hard materials from damaging the surface of the cleaning roller, the third pressure plate is made of elastic deformable material. In this solution, the material preferably used for the third pressure plate is elastic rubber. In order to make the third pressure plate fit more closely with the surface of the cleaning roller, the third pressure plate is designed to be arc-shaped in cross section along the width direction. The third pressure plate is provided with a plurality of spaced arc-shaped support ribs (not marked in the figure) along the axial direction of the cleaning roller. The support ribs are as follows: Figure 1The cross-section shown shows an arc-shaped contact surface along the circumference of the cleaning roller. In this embodiment, the first, second, and third pressure plates effectively cooperate to form three contact surfaces along the circumference. This effectively disperses the radial forces generated between the cleaning surfaces during cleaning, resulting in a more uniform force applied to the cleaning roller's rotating shaft in the circumferential direction, thereby preventing the cleaning roller from vibrating off its axis during high-speed rotation.

[0062] like Figure 2 As shown, the midpoint of the surface contact pointing to the axis formed by the first pressure plate and the second pressure plate with the surface of the cleaning roller respectively and the axis forms an angle a, which is 60-180 degrees. When the first pressure plate and the second pressure plate completely "face and embrace" the cleaning roller, the midpoint of the surface contact pointing to the axis formed by the first pressure plate and the second pressure plate with the surface of the cleaning roller respectively and the axis forms an angle of 180 degrees. When the total arc length of the first pressure plate and the second pressure plate in contact with the surface of the cleaning roller only accounts for 1 / 3 of the total arc length of the current cross-section of the entire cleaning roller, and ignoring the gap between the arc line of the first pressure plate contacting the cleaning roller and the arc line of the second pressure plate contacting the cleaning roller, then at this time, the midpoint of the surface contact pointing to the axis formed by the first pressure plate and the second pressure plate with the surface of the cleaning roller respectively and the axis forms an angle of 60 degrees. When the angle formed by the midpoint of the surface contact pointing to the axis formed by the first pressure plate and the second pressure plate with the surface of the cleaning roller and the axis is less than 60 degrees, that is, when the total arc length of the first pressure plate and the second pressure plate in contact with the surface of the cleaning roller only accounts for less than 1 / 3 of the total arc length of the current cross-section of the entire cleaning roller, and ignoring the gap between the arc line of the first pressure plate contacting the cleaning roller and the arc line of the second pressure plate contacting the cleaning roller, the "embracing" effect formed by the first pressure plate and the second pressure plate on the cleaning roller is not obvious, and it more shows a "single-sided braking" effect, losing the function of "multi-sided embracing" to further stabilize the operation of the cleaning roller and reduce radial runout. It is recommended to adopt a solution in which the midpoint of the surface contact pointing to the axis formed by the first pressure plate and the second pressure plate with the surface of the cleaning roller and the axis forms an angle of 60-180 degrees.

[0063] The contact points pointing to the axis formed by the third pressure plate and the first pressure plate with the surface of the cleaning roller, respectively, and the axis form an angle b, which is not less than 120 degrees. When the first pressure plate and the third pressure plate are completely "facing and encircling" the cleaning roller, the midpoints of the surface contacts pointing to the axis formed by the first pressure plate and the second pressure plate with the surface of the cleaning roller, respectively, form an angle of 180 degrees with the axis. In order for the cleaning brush 7 to brush off solid pressure and sticky garbage adhering to the surface of the cleaning roller, a gap must be reserved between the contact surface between the second pressure plate and the surface of the cleaning roller and the contact surface between the third pressure plate and the surface of the cleaning roller so that the cleaning brush 7 can brush the surface of the cleaning roller with the reserved gap. The gap surface of the cleaning roller accounts for approximately 1 / 6 of the entire surface of the cleaning roller, and the contact surface between the third pressure plate and the surface of the cleaning roller accounts for approximately 1 / 6 of the entire surface of the cleaning roller. It can be concluded that the contact points pointing to the axis formed by the third pressure plate and the first pressure plate with the surface of the cleaning roller, respectively, and the axis form an angle of not less than 120 degrees.

[0064] Taking the ground C as a reference, the vertical line D passing through the axis of the cleaning roller is located on the left side of the movable connection point between the water squeezing bar and the first pressure plate (the first pressure plate away from the second pressure plate end is the left side, and the first pressure plate close to the second pressure plate end is the right side). The resultant forces of the first pressure plate and the second pressure plate acting on the surface of the cleaning roller are left downward and right downward respectively. Combined with the vertical upward force of the ground acting on the surface of the cleaning roller when the cleaner is running, and the possible left upward force of the third pressure plate acting on the surface of the cleaning roller, this structural design can make the resultant force of all external forces acting on the surface of the cleaning roller tend to zero, which helps to reduce the uneven radial force of the cleaning roller, and is beneficial to reduce the radial vibration of the cleaning roller and the noise generated thereby.

[0065] In this solution, by adding possible new force points pointing from the contact point to the axis, and the angles formed between the new force points pointing to the axis are between 60 degrees and 180 degrees, and there are no less than 3 force points, there is a chance that the resultant force formed by each force point pointing to the axis will approach zero, which helps to reduce the uneven radial force of the cleaning roller, and is beneficial to reducing the radial vibration of the cleaning roller and the noise generated thereby.

[0066] A large area of elastic rubber is used in front and behind the first pressure plate and in front and behind the second pressure plate to provide a slight interference fit for the cleaning roller. The entire garbage channel formed by the third pressure plate and the corresponding cleaning roller surface produces an arc-shaped support rib with spaced intervals in the axial direction, which also produces a slight interference fit for the cleaning roller. This makes the cleaning roller have an arc surface corresponding to the first pressure plate on the cleaning roller, an arc surface corresponding to the second pressure plate on the cleaning roller, and multiple spaced support lines formed by the third pressure plate on the cleaning roller. The three form a ring-shaped three-dimensional support system as a whole. Ultimately, all the forces supporting the cleaning roller are directed to the axis center, and the resultant force of all forces tends to zero, which helps to reduce the uneven force on the cleaning roller in the radial direction, and is beneficial to reduce the radial vibration of the cleaning roller and the noise generated thereby. At the same time, the entire arc surface corresponding to the first pressure plate on the cleaning roller and the entire arc surface corresponding to the second pressure plate on the cleaning roller are always in interference fit contact with the cleaning roller, which will reduce the noise generated by the cleaning roller during the deformation process from the free state to the compressed state and from the compressed state to the free state. At the same time, the arc-shaped guide surface corresponding to the third pressure plate and the cleaning roller is only provided with a plurality of arc-shaped support ribs, so a garbage guiding channel can still be formed between the arc-shaped support ribs, and the permeability of the garbage guiding channel of the third pressure plate relative to the cleaning roller is still maintained, while also generating sufficient support for the cleaning roller.

[0067] Example 2:

[0068] like Figure 4 As shown, this embodiment differs from the first embodiment in that, in this embodiment, the first pressing plate 2 and the water squeezing bar 4 are detachably connected, and in this solution, they are mainly connected by screws. Of course, this embodiment does not limit the connection method between the two. As long as a detachable connection method can be achieved in the art, it can be used as an alternative to this embodiment. In order to achieve a seamless connection between the guide baffle and the water squeezing bar, in this embodiment, the first pressing plate 2 and the water squeezing bar 4 are connected by bonding. Through the above two connection methods, the first pressing plate 2 and the water squeezing bar 4 can be seamlessly connected, and at the same time, a small height difference or nearly flushness between the first pressing plate 2 and the water squeezing bar 4 can be achieved.

[0069] Compared with the first embodiment, another difference between this embodiment and the first embodiment is: in this embodiment, there is no elastic pressure strip 21 structural design, but the interior of the first pressure plate 2 can still be designed as a first pressure plate variable cavity 23 structure, and the other end of the first pressure plate 2 away from the water squeezing strip 4 is free to abut against the cleaning roller cover 5, or a protrusion can be provided at the terminal end of the end surface, and the protrusion abuts against the cleaning roller cover 5. When the cleaning roller cover 5 is deformed by external force, the protrusion structure design can achieve a certain buffering effect, thereby reducing the force between the first pressure plate 2 and the cleaning roller, and ensuring the normal operation of the cleaning roller.

[0070] Similarly, the cleaning roller cover 5 abuts against the raised portion of the first pressing plate 2, giving the first pressing plate 2 a larger space for movement and deformation. Other structures are the same as those in the first embodiment and will not be described in detail here.

[0071] As a variation of the present invention, the other end of the first pressure plate 2 away from the water squeezing bar 4 is freely connected to the cleaning roller cover 5 (not shown in the figure). When the cleaning roller cover 5 is deformed by external force, the connecting structure design can achieve a certain buffering effect, thereby reducing the force between the first pressure plate 2 and the cleaning roller, and ensuring the normal operation of the cleaning roller.

[0072] The above design also satisfies the following requirements: when the cleaner is in use, the first pressure plate 2 contacts the surface of the cleaning roller after being squeezed by the squeezing bar 4. During the process of restoring the squeezed cleaning roller surface to a free state under the action of the cleaning roller elastic material, the first pressure plate variable cavity 23 of the first pressure plate 2 precisely "absorbs" the impact of the cleaning roller surface on the cleaning roller cover 5. Because there is a small height difference or near-flush between the first pressure plate and the squeezing bar in this embodiment, the squeezing cleaning roller surface can smoothly transition to a free state under the action of the cleaning roller elastic material, and the process of "absorbs" the impact of the cleaning roller surface on the cleaning roller cover 5 does not generate noise.

[0073] Example 3:

[0074] like Figure 5 As shown, this embodiment is different from embodiment 1 and embodiment 2 in that the first pressure plate 2 includes a limiting portion 21, and the limiting portion 21 is a raised structure. In this solution, the end face of the raised structure is arc-shaped, and the arc-shaped raised end face of the limiting portion 21 is against the cleaning roller cover 5. In this embodiment, the arc-shaped raised end face of the limiting portion 21 is preferably against the middle part of the cleaning roller cover 5, and the first pressure plate 2 is flush with the end face of the water squeezing portion (not marked in the figure) of the water squeezing bar 4 and is smoothly connected.

[0075] In order to achieve the above-mentioned end face flush effect, one end of the first pressure plate 2 connected to the water squeezing part of the water squeezing bar 4 is a fixed part 22, and the other end is a free end. The end face of the free end in contact with the surface of the cleaning roller and the end face extending from the fixed groove form a certain angle, which is preferably an acute angle in this scheme. Correspondingly, a flush end (not marked in the figure) is provided on the first pressure plate 2. When the fixed part 22 is inserted into the fixed groove (not marked in the figure) of the water squeezing part of the water squeezing bar 4, the flush end just connects with the angle, thereby realizing a smooth connection between the first pressure plate 2 and the water squeezing bar 3.

[0076] When the cleaning device is in use, the first pressure plate 2 contacts the surface of the cleaning roller after being squeezed by the squeezing bar 4. During the process of restoring the squeezed surface of the cleaning roller to a free state under the action of the elastic material of the cleaning roller, the first pressure plate variable cavity 23 of the first pressure plate 2 precisely "absorbs" the impact of the cleaning roller surface on the cleaning roller cover 5. Because there is a small height difference or near-flush between the first pressure plate and the squeezing bar in this embodiment, the squeezing surface of the cleaning roller can smoothly transition to a free state under the action of the elastic material of the cleaning roller, and the process of "absorbs" the impact of the cleaning roller surface on the cleaning roller cover 5 does not generate noise.

[0077] The present invention also provides an embodiment of a cleaning tool.

[0078] like Figure 1 、 Figure 4 、 Figure 5 As shown, the present invention provides a cleaning device, comprising a cleaning head provided with a housing 8, and the cleaning head is provided with the above-mentioned multi-surface contact cleaning roller mechanism.

[0079] In the cleaning device, a cleaning roller cover 5 is installed on the shell 8, one end of the first pressure plate 2 is clamped or abutted with the cleaning roller cover 5, and the other end of the first pressure plate 2 is detachably connected to the water squeezing bar fixedly installed on the cleaning roller cover 5, the water guide bar assembly 3 is fixedly connected to the shell 8, and the third pressure plate 6 is fixedly connected to the shell 8, and a variable gap is provided between the first pressure plate and the shell.

[0080] The first pressure plate, which forms a corresponding curved surface on the cleaning roller; the second pressure plate, which forms a corresponding curved surface on the cleaning roller; and the third pressure plate, which forms multiple spaced support lines on the cleaning roller, form a circular, three-dimensional support system. Ultimately, all supporting forces on the cleaning roller are directed toward the axis of the cleaning roller. This "multi-faceted" multi-contact cleaning roller mechanism can "absorb" the impact of the cleaning tool on the cleaning roller during actual use, reducing the radial runout of the cleaning roller and, therefore, the "vibration" felt by the user through the cleaning tool's push rod during use, thereby improving the user experience.

[0081] According to an embodiment of the present invention, during operation of the cleaning device, the cleaning drum 1 rotates, and garbage is rolled up by the cleaning drum. At the same time, clean water is delivered to the surface of the cleaning drum to flush the cleaning drum. A water guide bar assembly 3 is installed on the upper portion of the housing 8. The water guide bar assembly 3 and the cleaning drum have an interference fit. During the high-speed rotation of the cleaning drum, the sewage squeezed out by the water guide bar and the clean water delivered to the cleaning drum are mixed together, and a portion of the garbage is carried away by the water flow. The first and second pressure plates are made of large-area elastic rubber to provide a slight interference fit with the cleaning drum. The third pressure plate also provides a slight interference fit with the cleaning drum by creating spaced arc-shaped support ribs in the axial direction. In this way, the first pressure plate corresponds to the corresponding arc surface on the cleaning drum, the second pressure plate corresponds to the corresponding arc surface on the cleaning drum, and the third pressure plate forms multiple spaced support lines on the cleaning drum. The three components form an annular three-dimensional support system. Ultimately, all forces supporting the cleaning drum are directed toward the axis, and the resultant force of all forces tends to zero, which helps to reduce the uneven force on the cleaning drum in the radial direction and helps to reduce the radial vibration and noise generated by the cleaning drum. The cleaning appliance may be a vacuum cleaner, a floor scrubber, a sweeping robot or the like.

[0082] Since at least two contact surfaces are formed on the surface of the cleaning roller to support it when it is working, the force can be effectively dispersed in the circumferential direction of the rotating shaft, which can avoid uneven force on the surface of the cleaning roller when it is working, causing excessive load on the rotating shaft, affecting the dynamic balance of the cleaning roller when it is working, and avoiding vibration of the cleaning roller that deviates from the axis during high-speed rotation.

[0083] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core ideas of the present application. At the same time, changes or modifications made by those skilled in the art based on the ideas of the present application, the specific implementation methods, and the scope of application of the present application, all fall within the scope of protection of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. A multi-surface contact cleaning roller mechanism, used in a cleaning appliance, characterized in that ,include: Clean the roller; The water squeezing strip and the water guide strip are in contact with the cleaning surface formed on the surface of the cleaning roller; A first pressing plate is located outside the water squeezing bar and contacts the surface of the cleaning roller to form a first contact surface; The second pressing plate is located between the water guide bar and the surface of the cleaning roller and contacts the surface of the cleaning roller to form a second contact surface; The first pressing plate and the second pressing plate respectively form an angle between the contact points pointing to the axis formed with the surface of the cleaning roller and the axis, and the angle is 60-180 degrees.

2. The multi-surface contact cleaning roller mechanism according to claim 1, characterized in that: The top surface of the cleaning roller is covered with a cleaning roller cover, the first pressing plate is movably connected to the water squeezing strip, and a plurality of first pressing plate variable cavities formed by dividing elastic strips are provided between the first pressing plate and the cleaning roller cover; Preferably, the first pressing plate and the second pressing plate respectively comprise elastic rubber, and the contact surface of the cleaning surface passes through the extension line of the axis of the cleaning roller and is located within the angle formed by the first pressing plate, the second pressing plate and the axis; Preferably, the first pressing plate and the second pressing plate are arc-shaped in cross section along the width direction; Preferably, a variable chamber is provided between the second pressure plate and the water guide bar.

3. The multi-surface contact cleaning roller mechanism according to claim 1, characterized in that: The water squeezing strip is provided with a fixing groove, and at least one fixing strip cooperating with the fixing groove is provided on the first pressing plate. The fixing strip is placed in the fixing groove to realize the movable connection between the first pressing plate and the water squeezing strip.

4. The multi-surface contact cleaning roller mechanism according to claim 2, characterized in that: When the cleaning device is in use, the variable cavity of the first pressing plate supports the first pressing plate to contact the surface of the cleaning roller squeezed by the water squeezing bar.

5. The multi-surface contact cleaning roller mechanism according to claim 2, characterized in that: The variable chamber is a sealed structure.

6. The multi-surface contact cleaning roller mechanism according to claim 1, characterized in that: Upper and lower sides of the second pressing plate respectively extend outward along the arc of the surface of the cleaning roller and beyond the extension of the water guide strip; Preferably, the cross section of the extension portion along the width direction is triangular.

7. The multi-surface contact cleaning roller mechanism according to claim 1, characterized in that: The multi-surface contact cleaning roller mechanism further includes a third pressure plate that is interference-fitted with the surface of the cleaning roller, wherein the contact points formed by the third pressure plate and the first pressure plate with the surface of the cleaning roller and pointing to the axis form an angle of not less than 120 degrees with the axis; Preferably, the third pressing plate is made of an elastically deformable material.

8. The multi-surface contact cleaning roller mechanism according to claim 7, characterized in that: The third pressing plate is designed with an arc-shaped cross section along the width direction, and a plurality of spaced supporting ribs are provided on the third pressing plate along the axial direction of the cleaning roller; Preferably, the supporting ribs fit the cleaning roller along the circumferential direction of the cleaning roller.

9. A cleaning device comprising a cleaning head provided with a housing, the cleaning head being provided with a multi-surface contact cleaning roller mechanism, characterized in that , the multi-surface contact cleaning roller mechanism has the multi-surface contact cleaning roller mechanism described in claims 1-8.

10. The cleaning tool according to claim 9, characterized in that A variable gap is provided between the first pressing plate and the housing.

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