Roller assembly for a cleaning device and a cleaning device

Abstract

The application discloses a roller assembly for cleaning equipment and cleaning equipment, the roller assembly for cleaning equipment comprises an axle, a roller body, a first elastic structure and a friction structure, the roller body is rotatably installed on the axle, one end of the first elastic structure is fixedly arranged with the roller body, the friction structure comprises a first friction structure and a second friction structure, the first friction structure is rotatably installed on the axle and is fixedly arranged with the other end of the first elastic structure, and the second friction structure is fixed on the axle and is pressed against the first friction structure; wherein, when the roller body rotates along a first direction, the one end of the first elastic structure is driven to rotate, the first friction structure and the second friction structure limit the other end of the first elastic structure to move under the action of mutual friction, and the first elastic structure is elastically deformed.

Description

Technical Field

[0001] This invention belongs to the field of cleaning device technology, specifically relating to a roller assembly for cleaning equipment and a cleaning device. Background Technology

[0002] With the development of technology, cleaning equipment has also developed rapidly. Cleaning equipment includes robotic mopping, handheld mopping machines, handheld sweeping machines, and so on. Taking handheld cleaning equipment as an example, users push or pull the machine forward or backward to complete the cleaning. Handheld cleaning equipment is usually quite bulky, making it relatively strenuous for users to operate. For example, with handheld floor scrubbers, due to the significant interference between the scrubber's roller brush and the floor, the rotating brush exerts a considerable driving force on the machine in the same direction as the brush's rotation. This driving force can result in excessive traction or resistance on the operator, leading to a poor user experience. Summary of the Invention

[0003] Therefore, the present invention provides a roller assembly and cleaning equipment for cleaning equipment, which aims to solve the technical problem that in the prior art, the roller brush of the cleaning equipment has a large amount of interference with the ground, and the roller brush will exert a relatively large driving force on the machine in the same direction as the roller brush rotation when rotating. This driving force will cause the floor scrubber to exert too much traction or resistance on the operator, resulting in a poor user experience.

[0004] To address the aforementioned technical problems, the present invention provides a roller assembly for a cleaning device, the roller assembly for the cleaning device comprising:

[0005] axle;

[0006] The roller body is rotatably mounted on the axle;

[0007] A first elastic structure, one end of which is fixedly disposed to the roller body; and...

[0008] The friction structure includes a first friction structure and a second friction structure. The first friction structure is rotatably mounted on the axle and fixedly disposed at the other end of the first elastic structure. The second friction structure is fixed on the axle and pressed against the first friction structure.

[0009] When the roller body rotates along the first direction, it drives one end of the first elastic structure to rotate. The first friction structure and the second friction structure restrict the movement of the other end of the first elastic structure under the action of mutual friction, so that the first elastic structure undergoes elastic deformation at least along the tangential direction of the roller body. When the roller body rotates in the opposite direction along the first direction, the elastic restoring force of the first elastic structure acts on the roller body, pushing the roller body to rotate in the opposite direction along the first direction.

[0010] Preferably, in the roller assembly for the cleaning equipment, the first elastic structure is a spiral spring, the outer ring of the spiral spring is fixed to the inner wall of the roller body, and the inner ring of the spiral spring is fixedly disposed to the first friction structure.

[0011] Preferably, in the roller assembly for the cleaning equipment, the first friction structure includes a first mounting base and a moving friction plate. The first mounting base is rotatably mounted on the axle and fixedly disposed at the other end of the first elastic structure. The moving friction plate is mounted on the first mounting base and presses against the second friction structure.

[0012] Preferably, in the roller assembly for the cleaning equipment, the dynamic friction pad is elastically pressed against the second friction structure.

[0013] Preferably, in the roller assembly for the cleaning equipment, the roller assembly for the cleaning equipment further includes a second elastic structure and a locking structure, the second elastic structure and the locking structure being located on the side opposite to the first mounting base and the second friction structure, the second elastic structure being disposed between the first mounting base and the locking structure, and the locking structure being mounted on the wheel axle.

[0014] Preferably, in the roller assembly for the cleaning equipment, a first end cap is mounted on the side end face of the axle body opposite to the first friction structure, and the first end cap is disposed through the axle;

[0015] The second elastic structure is located between the first end cap and the locking structure.

[0016] Preferably, in the roller assembly for the cleaning equipment, the second friction structure is unidirectionally rotatable on the axle, and the second friction structure can rotate in the opposite direction to the first direction, but cannot rotate in the first direction.

[0017] Preferably, in the roller assembly for the cleaning equipment, the second friction structure is mounted on the axle via a one-way ball bearing.

[0018] Preferably, in the roller assembly for the cleaning equipment, the second friction structure includes a second mounting base and a static friction plate, the second mounting base being mounted on the axle, and the static friction plate being mounted on the second mounting base and pressed against the first friction structure.

[0019] To achieve the above objectives, the present invention also provides a cleaning device, the cleaning device including the roller assembly for cleaning devices described above.

[0020] The technical solution provided by this invention has the following advantages:

[0021] The roller assembly for cleaning equipment provided by this invention, taking a floor scrubber as an example, when the floor scrubber is pushed forward, the roller body rotates along a first direction. At this time, the first friction structure and the second friction structure are restricted by the interaction of frictional forces, limiting the movement of the first friction structure. One end of the first elastic structure rotates with the roller body, while the other end of the first elastic structure is fixed to the first friction structure and does not rotate. The first elastic structure undergoes elastic deformation and stores force. When the floor scrubber is pushed backward, the roller body rotates in the opposite direction of the first direction. The elastic restoring force of the first elastic structure acts on the roller body, pushing the roller body to rotate in the opposite direction of the first direction, providing a pulling assist. This reduces the resistance of the floor scrubber when it is pulled backward, solving the technical problem in the prior art where the interference between the roller brush and the ground is large, and the roller brush will exert a relatively large driving force on the machine in the same direction as the roller brush rotation. This driving force will cause the floor scrubber to exert too much traction or resistance on the operator, resulting in a poor user experience.

[0022] Furthermore, since the first friction structure and the second friction structure press against each other, when the roller body rotates in the first direction, the first friction structure and the second friction structure are restricted by the interaction of frictional forces, thus limiting the movement of the first friction structure. When the stored force of the first elastic structure is sufficient to overcome the frictional force between the first friction structure and the second friction structure, the first friction structure and the first elastic structure rotate together with the roller body, and at this time the first elastic structure stops storing force. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A perspective view of an embodiment of the cleaning device provided by the present invention;

[0025] Figure 2 for Figure 1 A perspective view of an embodiment of a roller assembly for a cleaning device;

[0026] Figure 3 for Figure 2 An exploded view of the roller assembly used in cleaning equipment;

[0027] Figure 4 for Figure 2 A cross-sectional view of the roller assembly used in cleaning equipment.

[0028] Explanation of reference numerals in the attached figures:

[0029]

[0030] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0033] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0034] Cleaning equipment includes robotic mopping, handheld mopping machines, handheld sweeping machines, and so on. Taking handheld cleaning equipment as an example, users push or pull the machine forward or backward to complete the cleaning process. Handheld cleaning equipment is usually quite bulky, making it difficult for users to operate. For example, with handheld floor scrubbers, due to the significant interference between the scrubber's roller brush and the floor, the rotating brush exerts a considerable driving force on the machine in the same direction as the brush's rotation. This driving force can result in excessive traction or resistance on the operator, leading to a poor user experience.

[0035] The above problems can usually be solved by adding components such as motors, circuit boards, and sensors. However, the cost of adding a drive motor is generally high. In addition, the motor needs reaction time when switching between pushing forward and pulling backward, and the delay in action causes a jerky feeling.

[0036] Example 1

[0037] To address the above problems, the present invention provides a roller assembly for a cleaning device. Please refer to [link / reference]. Figures 1 to 4The roller assembly 100 for cleaning equipment includes an axle 1, a roller body 2, a first elastic structure 3, and a friction structure. The roller body 2 is rotatably mounted on the axle 1. One end 3a of the first elastic structure 3 is fixedly disposed with the roller body 2. The friction structure includes a first friction structure 41 and a second friction structure 42. The first friction structure 41 is rotatably mounted on the axle 1 and fixedly disposed with the other end 3b of the first elastic structure 3. The second friction structure 42 is fixed on the axle 1 and presses against the first friction structure 41. When the roller body 2 rotates in a first direction, it drives one end 3a of the first elastic structure 3 to rotate. The first friction structure 41 and the second friction structure 42 restrict the movement of the other end 3b of the first elastic structure 3 under the action of mutual friction. The first elastic structure 3 undergoes elastic deformation at least along the tangential direction of the roller body 2. When the roller body 2 rotates in the opposite direction of the first direction, the elastic restoring force of the first elastic structure 3 acts on the roller body 2, pushing the roller body 2 to rotate in the opposite direction of the first direction.

[0038] The first elastic structure 3 can be a torsion spring, a spiral spring, etc., thus enabling extension and contraction in the direction of rotation. Of course, other structures can also be included, which are not limited here. One end 3a and the other end 3b of the first elastic structure 3 are at different positions. For example, one end 3a and the other end 3b of the first elastic structure 3 can be different positions on the first elastic structure 3 that are relatively arranged radially or axially along the wheel axle 1; however, one end 3a and the other end 3b of the first elastic structure 3 are not limited to the aforementioned relatively arranged positions.

[0039] The method of fixing the first friction structure 41 to the axle 1 is not specifically limited. It can be connected to the axle 1 by a bearing, so that it can rotate relative to the axle 1, or it can be done in other ways.

[0040] The first elastic structure 3, the first friction structure 41, and the second friction structure 42 can be arranged sequentially along the axial direction of the wheel axle to improve the compactness of the overall structure and facilitate assembly. Of course, the first elastic structure 3, the first friction structure 41, and the second friction structure 42 can also adopt other arrangements, which are not specifically limited here.

[0041] In specific operation, since one end 3a of the first elastic structure 3 is fixedly set to the roller body 2, when the roller body 2 rotates along the first direction, the roller body 2 drives one end 3a of the first elastic structure 3 to rotate. At this time, the other end 3b of the first elastic structure 3 is fixed to the first friction structure 41. Due to the mutual friction between the first friction structure 41 and the second friction structure 42, the movement of the other end 3b of the first elastic structure 3 is restricted. Thus, one end 3a of the first elastic structure 3 rotates, while the other end 3b does not rotate. The first elastic structure 3 undergoes elastic deformation along the tangential direction of the roller body, and the first elastic structure begins to store force. When the wheel body 2 rotates in the opposite direction of the first direction, the first elastic structure 3 begins to release its stored force. Since one end 3a of the first elastic structure 3 is fixedly set to the wheel body 2, the elastic restoring force of the first elastic structure 3 acts on the wheel body 2, pushing the wheel body 2 to rotate in the opposite direction of the first direction. In this way, when pushing the wheel body 2 in the first direction, it can offset part of the forward driving force, avoiding excessive traction force on the operator. When pushing in the opposite direction of the first direction, the first elastic structure 3 releases its stored force, providing assistance to the wheel body 2 in the opposite direction of the first direction, which can avoid excessive resistance and reduce the user's experience.

[0042] For ease of explanation, the following description uses a floor scrubber as an example for cleaning equipment 200, but this does not mean that cleaning equipment 200 is limited to floor scrubbers. Furthermore, because the interference between the floor scrubber's roller brush and the floor is relatively large, the roller brush exerts a relatively large driving force on the machine in the same direction as its rotation when rotating. In this embodiment, the first direction is the direction in which the roller body 2 rotates when pushing forward. This can offset some of the forward driving force when accumulating power, and provide some assistance when releasing the accumulated power by pushing backward.

[0043] More specifically, when the floor scrubber is pushed forward, the roller body 2 rotates in the first direction. At this time, the first friction structure 41 and the second friction structure 42 are restricted by the mutual friction force, limiting the movement of the first friction structure 41. One end of the first elastic structure 3 rotates with the roller body 2, while the other end 3b of the first elastic structure 3 is fixed to the first friction structure 41 and does not rotate. The first elastic structure 3 undergoes elastic deformation and stores force. When the floor scrubber is pushed backward, the roller body 2 rotates in the opposite direction of the first direction. The elastic restoring force of the first elastic structure 3 acts on the roller body 2, pushing the roller body 2 to rotate in the opposite direction of the first direction, providing a pulling assist. This reduces the resistance of the floor scrubber when pulled backward. With a low-cost mechanical structure, this improves the technical problem of large interference between the floor scrubber brush and the ground. When the brush rotates, it applies a relatively large driving force to the machine in the same direction as the brush rotation. This driving force can cause the floor scrubber to exert too much traction or resistance on the operator, resulting in a poor user experience.

[0044] Furthermore, since the first friction structure 41 and the second friction structure 42 are pressed together, when the roller body 2 rotates in the first direction, the first friction structure 41 and the second friction structure 42 are restricted by the interaction of frictional forces, thus limiting the movement of the first friction structure 41. When the stored force of the first elastic structure 3 is sufficient to overcome the frictional force between the first friction structure 41 and the second friction structure 42, the first friction structure 41 and the first elastic structure 3 rotate together with the roller body 2, and the first elastic structure 3 stops storing force.

[0045] The axle 1 is used for fixed installation in the cleaning equipment 200. When the floor scrubber is pushed, the roller body 2 rotates around the axle 1. More specifically, the roller body 2 includes a wheel body and a second end cap 72. The wheel body is rotatably mounted on the axle 1, and the second end cap 72 passes through the axle 1 and is mounted on the end face of the wheel body opposite to the first friction structure 41.

[0046] The first elastic structure 3 is a structure capable of elastic deformation along the tangential direction of the roller body 2, such as a torsion spring, thus enabling extension and contraction in the rotational direction. In this embodiment, the first elastic structure 3 is a spiral spring 31. The outer ring of the spiral spring 31 is fixed to the inner wall of the roller body 2, and the inner ring of the spiral spring 31 is fixed to the first friction structure 41. This makes it easier to control the elastic deformation of the roller in the tangential direction. In other embodiments, the inner ring of the spiral spring 31 can be fixed to the roller body 2, and the outer ring of the spiral spring 31 can be fixed to the first friction structure 41. No specific limitation is made here. In this case, regardless of whether one of the outer ring or the inner ring of the spiral spring 31 is fixed to the first friction structure 41 and the other is fixed to the roller body 2, the spiral spring can undergo elastic deformation and store force. The specific fixing method of the spiral spring 31 can be set according to the requirements. For ease of explanation, the first elastic structure 3 is described below using a spiral spring 31 as an example, but it does not mean that the first elastic structure 3 is limited to a spiral spring 31.

[0047] The first friction structure 41 can be configured in various ways, for example, it can be a friction block. Please refer to [link / reference]. Figure 3 and Figure 4Alternatively, the first friction structure 41 can include a first mounting base 411 and a dynamic friction plate 412. The first mounting base 411 is rotatably mounted on the axle 1 and fixedly disposed at the other end 3b of the first elastic structure 3. The dynamic friction plate 412 is mounted on the first mounting base 411 and presses against the second friction structure 42, thus allowing for easy replacement of the dynamic friction plate 412. Furthermore, the friction surfaces of the first friction structure 41 and the second friction structure 42 are typically made of wear-resistant materials, which increases costs compared to conventional materials. This invention, by setting the dynamic friction plate 412 on the first mounting base 411, only requires selecting a wear-resistant material for the dynamic friction plate 412, eliminating the need for using a wear-resistant material for the entire structure, thereby reducing costs. Of course, the first friction structure 41 can also include a first mounting base 411 with a dynamic friction surface facing the second friction structure 42, where the dynamic friction surface rubs against the second friction structure 42, resulting in a simpler structure.

[0048] Please see Figure 3 and Figure 4 The first friction structure 41 presses against the second friction structure 42, thus limiting the rotation of the first friction structure 41 relative to the second friction structure 42 through the frictional force between the two. To ensure that the first friction structure 41 and the second friction structure 42 are pressed together, the first elastic structure 3 is usually elastically pressed against the second elastic structure 5. Furthermore, the amount of force stored in the first elastic structure 3 can be controlled by adjusting the elastic contact force between the first friction structure 41 and the second friction structure 42, making the amount of force stored easily controllable. When the force storage is complete, the first friction structure 41 rotates relative to the second friction structure 42, stopping the force storage. More specifically, the moving friction plate 412 elastically presses against the second friction structure 42. Specifically, the second elastic structure 5 can be located on the side opposite to the first friction structure 41 and the second friction structure 42, or it can be located on the same side as the first friction structure 41 and the second friction structure 42. For example, when the second elastic structure 5 is provided on the same side as the first friction structure 41 and the second friction structure 42, the second elastic structure 5 is in a stretched state, causing the first friction structure 41 to elastically press against the second elastic structure 5; when the second elastic structure 5 is provided on the opposite side of the first friction structure 41 and the second friction structure 42, the second elastic structure 5 is in a compressed state, causing the first friction structure 41 to elastically press against the second elastic structure 5. There is no specific limitation on whether the second elastic structure 5 is provided on the same or opposite side of the first friction structure 41 and the second friction structure 42. Of course, when the second elastic structure 5 is provided on the opposite side of the first friction structure 41 and the second friction structure 42, it can be provided at any position along the axial direction of the wheel axle 1, making the structure more compact and easier to assemble.

[0049] In this embodiment, please refer to Figure 3 and Figure 4 The roller assembly 100 for cleaning equipment also includes a second elastic structure 5 and a locking structure 6. The second elastic structure 5 and the locking structure 6 are located on the side opposite to the first mounting base 411 and the second friction structure 42. The second elastic structure 5 is disposed between the first mounting base 411 and the locking structure 6, and the locking structure 6 is mounted on the axle 1. Specifically, a first end cap 71 is mounted on the end face of the axle 1 body opposite to the first friction structure 41. The first end cap 71 passes through the axle 1, and the second elastic structure 5 is located between the first end cap 71 and the locking structure 6. Alternatively, the second end cap 72 can be mounted on the first end cap 71, and the second elastic structure 5 can be located between the second end cap 72 and the second locking structure 6. In this way, by adjusting the locking structure 6 to move towards the first mounting base 411, the first friction structure 41 can be elastically pressed against the second friction structure 42, restricting the mutual movement between the first friction structure 41 and the second friction structure 42. When the charging is complete, it can switch to a slipping state.

[0050] The second elastic structure 5 can be a compression spring or an elastic structure. The following explanation uses a compression spring as an example, but it does not mean that the second elastic structure 5 is limited to a compression spring. During installation, after the second end cover 72 passes through the axle 1, one side of the second end cover 72 abuts against the first mounting base 411. After the compression spring passes through the axle 1, it abuts against the other side of the second end cover 72. Then, the locking structure 6 presses and locks the compression spring against the first friction structure 41 on the side opposite to the second end cover 72. The locking structure 6 and the axle 1 can be connected by a snap-fit ​​or a threaded connection; there are no specific limitations here. In this embodiment, the locking structure 6 is a locking nut. By tightening the locking nut towards the first friction structure 41, the tightness of the pressure between the first friction structure 41 and the second friction structure 42 is adjusted, thereby adjusting the magnitude of the frictional force that needs to be overcome between the first friction structure 41 and the second friction structure 42 when the power storage stops.

[0051] In addition, since the second end cover 72 abuts against the first mounting base 411, and the first mounting base 411 is rotatably connected to the axle 1, in order to reduce the friction between the end face of the second end cover 72 and the first mounting base 411, an end face bearing 82 can be installed between the first mounting base 411 and the second end cover 72, and the end face bearing 82 is installed on the axle 1.

[0052] The second friction structure 42 includes a second mounting base 421 and a static friction plate 422. The second mounting base 421 is mounted on the axle 1, and the static friction plate 422 is mounted on the second mounting base 421 and presses against the first friction structure 41. More specifically, the moving friction plate 412 presses against the static friction plate 422. Furthermore, the friction surfaces of the first friction structure 41 and the second friction structure 42 are typically made of more wear-resistant materials, which increases costs compared to conventional materials. This invention, by setting the static friction plate 422 on the second mounting base 421, only requires selecting a wear-resistant material for the static friction plate 422, eliminating the need for using a wear-resistant material for the entire structure, thus reducing costs. Of course, the second friction structure 42 can also include a second mounting base 421, with the second mounting base 421 having a static friction surface facing the first friction structure 41, where the static friction surface rubs against the first friction structure 41, resulting in a simpler structure.

[0053] Preferably, the second friction structure 42 is unidirectionally rotatable on the axle 1. The second friction structure 42 can rotate in the opposite direction to the first direction, but cannot rotate in the first direction. When the floor scrubber is pushed forward, the second friction structure 42 cannot rotate relative to the axle 1. At this time, the moving friction plate 412 and the stationary friction plate 422 are pressed together, creating friction to restrict the rotation of the moving friction plate 412. The moving friction plate 412 tends to rotate with the roller body 2 because it is fastened to the inner ring of the spiral spring 31. Due to the presence of end face pressure, the moving friction plate 412 or the second friction structure 42 can transmit torque, so the second mounting base 421 also tends to rotate with the roller body 2. The unidirectional rotatable installation of the second friction structure 42 on the axle 1 prevents the second mounting base 421 from rotating. When the roller body 2 continues to roll forward, the spiral spring... Spring 31 continues to store force and applies an increasing resistance to the floor scrubber, reducing the traction force of the floor scrubber on the operator. When the force stored in the spiral spring 31 is sufficient to overcome the friction between the moving friction plate 412 and the stationary friction plate 422, the first mounting base 411 and the moving friction plate 412 begin to rotate with the roller body 2 and rotate relative to the second mounting base 421 and the stationary friction force. The spiral spring 31 stops storing force when it reaches its maximum storage value. As the floor scrubber continues to be pushed forward (the roller body 2 rotates in the first direction), the spiral spring 31 maintains its maximum storage state and applies a constant resistance to the floor scrubber. When the floor scrubber is pulled back (the roller body 2 rotates in the opposite direction of the first direction), the forward resistance of the spiral spring 31 is converted into a continuously decreasing backward assist. When the spiral spring 31 decreases below the maximum value of the friction force between the static friction plate 422 and the dynamic friction plate 412, the dynamic friction plate 412 and the static friction plate 422 return to a relatively stationary state, and the first friction structure 41 and the second friction structure 42 maintain the tendency to rotate forward. If the floor scrubber continues to be pulled back, the force stored in the spiral spring 31 is released, and the spiral spring 31 begins to have the tendency to store force in the opposite direction. Since the second friction structure 42 can rotate in the opposite direction of the first direction, if the floor scrubber continues to be pulled back, the second friction structure 42, the first friction structure 41, and the spiral spring 31 will rotate together with the roller body 2. The spiral spring 31 will not store force, that is, the spiral spring 31 will not bring resistance or assistance.

[0054] Because the floor scrubber's roller brush has a large amount of interference with the ground, it exerts a relatively large driving force on the machine in the same direction as the roller brush's rotation when it rotates. To improve the user experience, the roller body 2 can be charged only when it rotates in the forward direction and the charged force can be released when it rotates in the reverse direction. That is, when the roller body 2 rotates in the reverse direction and the force charged by the spiral spring 31 is released, the roller body 2 will not continue to charge force even if it continues to rotate in the reverse direction.

[0055] In this embodiment, the second friction structure 42 is mounted on the axle 1 via a one-way ball bearing 81. More specifically, the outer ring of the one-way ball bearing 81 is fitted and fastened to the first mounting base 411, and the inner ring of the one-way ball bearing 81 is fastened to the axle 1 via a flat key. By setting the one-way ball bearing 81, the second friction structure 42 can only rotate in one direction around the axle 1.

[0056] In addition, the roller assembly 100 for cleaning equipment also includes structures such as roller coating 9, which will not be listed here. Among them, the roller coating 9 is provided on the outer wall of the roller body 2.

[0057] Example 2

[0058] Please see Figure 1 The present invention also provides a cleaning device 200, which includes the roller assembly 100 described above for cleaning devices. Embodiments of the cleaning device 200 include embodiments of the roller assembly 100 described above for cleaning devices. The beneficial effects of the roller assembly 100 described above for cleaning devices also apply to the cleaning device 200.

[0059] The cleaning equipment 200 can be a handheld floor scrubber, a handheld mop, or a handheld washing and mopping combo, etc. It can also be other cleaning equipment 200 equipped with the aforementioned roller assembly, which will not be listed here.

[0060] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. Based on the embodiments of the present invention, those skilled in the art can make other variations or modifications without creative effort, and all such variations or modifications should fall within the scope of protection of the present invention.

Claims

1. A roller assembly for a cleaning device, characterized in that, include: axle; The roller body is rotatably mounted on the axle; A first elastic structure, one end of which is fixedly disposed to the roller body; and... The friction structure includes a first friction structure and a second friction structure. The first friction structure is rotatably mounted on the axle and fixedly disposed at the other end of the first elastic structure. The second friction structure is fixed on the axle and pressed against the first friction structure. When the roller body rotates along the first direction, it drives one end of the first elastic structure to rotate. The first friction structure and the second friction structure restrict the movement of the other end of the first elastic structure under the action of mutual friction, so that the first elastic structure undergoes elastic deformation at least along the tangential direction of the roller body. When the roller body rotates in the opposite direction along the first direction, the elastic restoring force of the first elastic structure acts on the roller body, pushing the roller body to rotate in the opposite direction along the first direction.

2. The roller assembly for cleaning equipment as claimed in claim 1, characterized in that, The first elastic structure is a spiral spring, the outer ring of which is fixed to the inner wall of the roller body, and the inner ring of which is fixed to the first friction structure.

3. The roller assembly for cleaning equipment as described in claim 1 or 2, characterized in that, The first friction structure includes a first mounting base and a dynamic friction plate. The first mounting base is rotatably mounted on the axle and fixedly disposed at the other end of the first elastic structure. The dynamic friction plate is mounted on the first mounting base and presses against the second friction structure.

4. The roller assembly for cleaning equipment as described in claim 3, characterized in that, The dynamic friction plate elastically presses against the second friction structure.

5. The roller assembly for cleaning equipment as described in claim 4, characterized in that, The roller assembly for the cleaning equipment further includes a second elastic structure and a locking structure. The second elastic structure and the locking structure are located on the side opposite to the first mounting base and the second friction structure. The second elastic structure is disposed between the first mounting base and the locking structure, and the locking structure is mounted on the wheel axle.

6. The roller assembly for cleaning equipment as described in claim 5, characterized in that, A first end cap is installed on the side of the wheel axle body opposite to the first friction structure, and the first end cap passes through the wheel axle. The second elastic structure is located between the first end cap and the locking structure.

7. The roller assembly for cleaning equipment as described in claim 1 or 2, characterized in that, The second friction structure is rotatably mounted on the axle in one direction. The second friction structure can rotate in the opposite direction to the first direction, but cannot rotate in the first direction.

8. The roller assembly for cleaning equipment as claimed in claim 7, characterized in that, The second friction structure is mounted on the axle via a one-way ball bearing.

9. The roller assembly for cleaning equipment as claimed in claim 1, characterized in that, The second friction structure includes a second mounting base and a static friction plate. The second mounting base is mounted on the axle, and the static friction plate is mounted on the second mounting base and presses against the first friction structure.

10. A cleaning device, characterized in that, Includes the roller assembly for cleaning equipment as described in any one of claims 1 to 9.

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