Roller assembly for cleaning equipment and cleaning equipment

Abstract

The invention discloses a roller assembly for cleaning equipment and the cleaning equipment, the roller assembly for the cleaning equipment comprises a wheel shaft, a roller body, a first elastic structure and a locking structure, the roller body is rotatably mounted on the wheel shaft, one end of the first elastic structure is fixedly mounted on the wheel shaft, and the other end of the first elastic structure is fixedly mounted on the wheel shaft; one end of the locking structure is fixedly arranged with the other end of the first elastic structure, the other end of the locking structure is provided with a locking part, and the locking part has a locking state in which the locking part is locked with the roller body and an unlocking state in which the locking part is unlocked with the roller body; wherein when the locking part is in a locking state and the roller body rotates along a first direction, the roller body drives the other end of the first elastic structure to rotate, and the first elastic structure generates elastic deformation; the locking part is in a locking state, and the roller body rotates in the direction opposite to the first direction.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning devices, and in particular relates to a roller assembly for cleaning equipment and the cleaning equipment. Background Art

[0002] With the development of science and technology, cleaning equipment has also developed rapidly. Cleaning equipment includes mopping robots, handheld mopping machines, handheld sweepers, and so on. Taking handheld cleaning equipment as an example, users will push forward or pull back to complete cleaning when using it. Handheld cleaning equipment is usually bulky, and it is more laborious for users to push or pull the machine forward or backward. Taking a handheld floor scrubber as an example, due to the large amount of interference between the roller brush of the floor scrubber and the ground, when the roller brush rotates, it will apply a relatively large driving force to the machine that is consistent with the direction of rotation of the roller brush. This driving force will cause the floor scrubber to have excessive traction or resistance on the operator, resulting in a poor user experience. Summary of the invention

[0003] Therefore, the present invention provides a roller assembly and a cleaning device for a cleaning device, aiming to solve the technical problem that in the prior art, the roller brush of the cleaning device has a large interference with the ground, and when the roller brush rotates, a relatively large driving force consistent with the rotation direction of the roller brush is applied to the machine. The driving force can cause the floor scrubber to exert excessive traction or resistance on the operator, resulting in a poor user experience.

[0004] In order to solve the above technical problems, the present invention provides a roller assembly for a cleaning device, the roller assembly for a cleaning device comprising:

[0005] axle;

[0006] A roller body rotatably mounted on the wheel axle;

[0007] A first elastic structure, one end of which is fixedly mounted on the wheel axle, and the first elastic structure can be elastically deformed along the tangential direction of the roller body;

[0008] A locking structure, one end of which is fixedly arranged with the other end of the first elastic structure, and the other end of which has a locking portion, wherein the locking portion has a locking state locked with the roller body;

[0009] Among them, when the locking portion is in a locked state and the roller body rotates along a first direction, the roller body pushes the locking portion to drive the locking structure to rotate, and the locking structure links the other end of the first elastic structure to rotate, and the first elastic structure undergoes elastic deformation at least along the tangential direction of the roller body; when the locking portion is in a locked state and the roller body rotates in the opposite direction to the first direction, when the elastic reset force of the first elastic structure acts on the roller body, it pushes the roller body to rotate in the opposite direction of the first direction.

[0010] Preferably, in the roller assembly for cleaning equipment, the first elastic structure comprises a mounting seat structure and an elastic reset structure, the mounting seat structure is rotatably mounted on the wheel axle, and the elastic reset structure is mounted between the wheel axle and the mounting seat structure;

[0011] One end of the locking structure is fixedly disposed on the mounting seat structure.

[0012] Preferably, in the roller assembly for cleaning equipment, the elastic reset structure is a volute spring;

[0013] The inner ring of the spiral spring is fixed to the wheel axle, and the outer ring of the spiral spring is fixed to the mounting seat structure; or, the outer ring of the spiral spring is fixed to the wheel axle, and the inner ring of the spiral spring is fixed to the mounting seat structure.

[0014] Preferably, in the roller assembly for cleaning equipment, the locking structure comprises a locking seat structure and a locking member, the locking seat structure is mounted on the mounting seat structure, the locking member is mounted on the locking seat structure, and the locking member has the locking portion and can be movably arranged in the radial direction;

[0015] The inner wall of the roller body is provided with a first matching portion along the circumferential direction and is locked with the locking portion.

[0016] Preferably, in the roller assembly for cleaning equipment, the first matching portion includes a plurality of concave-convex structures arranged circumferentially along the inner wall of the roller body;

[0017] The locking member can be elastically telescopically arranged along the radial direction of the roller body, and the locking portion is elastically inserted into one or more of the concave-convex structures.

[0018] Preferably, in the roller assembly for cleaning equipment, the number of the locking structures is four, and the locking portion of each locking structure is plug-fitted with one of the concave-convex structures.

[0019] Preferably, in the roller assembly for the cleaning device, each of the concave-convex structures includes a groove with a notch facing the radial direction, the groove includes a first groove wall and a second groove wall arranged in sequence along the first direction, the angle between the first groove wall and the radial direction is α, the angle between the second groove wall and the radial direction is β, and α<β.

[0020] Preferably, in the roller assembly for cleaning equipment, the locking structure further comprises a second elastic structure, and the second elastic structure is arranged between the locking seat structure and the locking member so that the locking portion is elastically inserted into the first matching portion.

[0021] Preferably, in the roller assembly for cleaning equipment, the mounting seat structure comprises a mounting box body and a mounting cover plate, the mounting box body is open at one end along the axial direction of the wheel shaft and has a mounting cavity, the mounting box body is rotatably mounted on the wheel shaft, and the mounting cover plate covers the opening of the mounting box body and can rotate together with the mounting box body;

[0022] The spiral spring is installed in the installation cavity.

[0023] In order to achieve the above object, the present invention further provides a cleaning device, which includes the above roller assembly for cleaning device.

[0024] The technical solution provided by the present invention has the following advantages:

[0025] The roller assembly for cleaning equipment provided by the present invention takes a floor scrubber as an example. When the floor scrubber is pushed forward, the roller body rotates in a first direction (assuming that the first direction is the forward direction). When the locking portion is locked with the roller body, the first elastic structure undergoes elastic deformation, and at this time, the first elastic structure stores force. At this time, when the floor scrubber is changed to be pushed backward, the roller body rotates in the opposite direction of the first direction. When the elastic reset force of the first elastic structure acts on the roller body (releasing the stored force), the roller body is pushed to rotate in the opposite direction of the first direction, providing a backward pulling assist, thereby reducing the resistance of the floor scrubber when it is pulled backward, solving the problem in the prior art that the roller brush of the cleaning equipment has a large interference with the ground, and when the roller brush rotates, a relatively large driving force consistent with the rotation direction of the roller brush is applied to the machine, and the driving force causes the floor scrubber to have excessive traction or resistance on the operator, resulting in a poor user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A three-dimensional diagram of an embodiment of a cleaning device provided by the present invention;

[0028] Figure 2 for Figure 1 A perspective view of an embodiment of a roller assembly for a cleaning device;

[0029] Figure 3 for Figure 2 An exploded schematic diagram of a roller assembly for a cleaning device;

[0030] Figure 4 for Figure 2 A cross-sectional view of a roller assembly for a cleaning device;

[0031] Figure 5 for Figure 2 A three-dimensional diagram of an embodiment of the middle structure;

[0032] Figure 6 for Figure 5 A schematic diagram of an embodiment of a middle mating ring.

[0033] Description of reference numerals:

[0034]

[0035]

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0039] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0040] Cleaning equipment includes mopping robots, handheld mopping machines, handheld sweepers, etc. Taking handheld cleaning equipment as an example, users will push or pull forward to complete cleaning. Handheld cleaning equipment is usually bulky, and it is more laborious for users to push or pull the machine forward or backward. Taking a handheld floor scrubber as an example, due to the large amount of interference between the roller brush of the floor scrubber and the ground, when the roller brush rotates, it will apply a relatively large driving force to the machine in the same direction as the rotation of the roller brush. This driving force will cause the floor scrubber to have excessive traction or resistance on the operator, resulting in a poor user experience.

[0041] Usually, the above problems can be solved by adding motors, circuit boards, sensors and other components. However, the cost of adding drive motors is generally high. In addition, the motor needs reaction time when switching between forward pushing and backward pulling, and the action is delayed, causing frustration.

[0042] Example 1

[0043] In order to solve the above problems, the present invention provides a roller assembly for a cleaning device, see Figures 2 to 4 The roller assembly 100 for cleaning equipment includes a wheel shaft 1, a roller body 2, a first elastic structure 3, and a locking structure 4. The roller body 2 is rotatably mounted on the wheel shaft 1. One end 3a of the first elastic structure 3 is fixedly mounted on the wheel shaft 1. The first elastic structure 3 can be elastically deformed at least along the tangential direction of the roller body 2. One end 4a of the locking structure 4 is fixedly arranged with the other end 3b of the first elastic structure 3. The other end 4b has a locking portion. The locking portion has a locking state that is locked with the roller body 2. The locking portion is in a locked state. When the roller body 2 is in the locked state and rotates along the first direction, the roller body 2 pushes the locking portion to drive the locking structure 4 to rotate, and the locking structure 4 links the other end 3b of the first elastic structure 3 to rotate, and the first elastic structure 3 undergoes elastic deformation along the tangential direction of the roller body 2; when the locking portion is in the locked state and the roller body 2 rotates in the opposite direction to the first direction, when the elastic reset force of the first elastic structure 3 along the tangential direction of the roller body 2 acts on the roller body 2, the roller body 2 is pushed to rotate in the opposite direction of the first direction.

[0044] Among them, the first elastic structure 3 can be a torsion spring, a spiral spring, etc., so that the expansion and contraction in the rotation direction can be achieved. 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 different positions of the first elastic structure 3. For example, one end 3a and the other end 3b of the first elastic structure 3 can be different position points on the first elastic structure 3 that are relatively set along the radial or axial direction of the axle 1; but one end 3a and the other end 3b of the first elastic structure 3 are not limited to the above-mentioned relatively set position points. One end 4a and the other end 4b of the locking structure 4 are different positions of the locking structure 4, such as one end 4a and the other end 4b of the locking structure 4 can be different position points on the locking structure 4 that are relatively set along the radial or axial direction of the axle 1; but one end 4a and the other end 4b of the locking structure 4 are not limited to the above-mentioned relatively set position points.

[0045] The fixing arrangement of one end 4a of the locking structure 4 and the other end 3b of the first elastic structure 3 is not limited, and can be connected by different methods such as clamping, screw fixing, etc. The specific structure of the locking part and the locking method of the locking part and the roller body 2 are not limited, for example, the locking part can be a locking tongue structure, the inner side of the roller body 2 is provided with a cavity, and the locking tongue structure is embedded in the cavity of the roller body 2 to achieve the locking of the locking part and the roller body 2, etc.

[0046] The first elastic structure 3 and the locking structure 4 can be arranged in sequence in the roller assembly 100 along the axial direction of the wheel shaft, so as to improve the compactness of the spatial arrangement of the first elastic structure 3 and the locking structure 4 and facilitate assembly. Of course, the first elastic structure 3 and the locking structure 4 can also be arranged in other ways in the roller assembly 100, which is not limited here.

[0047] During specific operation, when an external force pushes the roller body 2 to rotate in a first direction (for example, forward), since the locking portion and the roller body 2 are in a locked state, the roller body 2 will push the locking portion and drive the locking structure 4 to rotate during the rotation of the first direction. Since one end 4a of the locking structure 4 is fixed to the other end 3b of the first elastic structure 3, when the locking structure 4 rotates, it will drive the other end 3b of the first elastic structure 3 to rotate in the tangential direction of the roller body 2. At this time, the first elastic structure 3 elastically deforms in the tangential direction of the roller body 2, and the first elastic structure 3 begins to accumulate force. When an external force pushes the roller body 2 to rotate in the opposite direction (for example, backward) of the first direction, since the locking portion and the roller body 2 are in a locked state and the roller body 2 rotates in the direction tangential to the roller body 2, Regarding the reverse rotation in the first direction, since one end 4a of the locking structure 4 is fixed to the other end 3b of the first elastic structure 3, the elastic reset force of the first elastic structure 3 along the tangential direction of the roller body 2 acts on the locking part. Since the locking part and the roller body 2 are in a locked state, the locking part applies a reverse force along the first direction to the roller body 2, and provides a reverse assisting force along the first direction (assisting force in the backward pulling direction). In this way, when the roller body 2 is pushed along the first direction, a part of the forward driving force can be offset to avoid excessive traction force of the driving force on the operator. When pushing in the reverse direction along the first direction, the first elastic structure 3 releases the stored force and provides a reverse assisting force along the first direction to the roller body 2, which can avoid excessive resistance and reduce the user experience.

[0048] In addition, the locking part can also have an unlocked state unlocked from the roller body 2. During the rotation of the roller body 2 in the first direction, when the stored force is greater than the resistance of the locking member 42 to the roller body 2, the locking part and the roller body 2 begin to slip, and at this time the roller body 2 pushes the locking part to rotate, and the locking part and the roller body 2 are unlocked.

[0049] For the sake of convenience, the cleaning equipment is taken as a floor scrubber as an example, but it does not mean that the cleaning equipment is limited to floor scrubbers. In addition, since the roller brush of the floor scrubber has a large amount of interference with the ground, the roller brush will apply a relatively large driving force to the machine in the same direction as the rotation direction of the roller brush when rotating. In this embodiment, the first direction is the direction in which the roller body 2 rotates when pushing forward, so that a part of the forward driving force can be offset when accumulating force, and some assistance can be provided when pushing backward to release the accumulated force.

[0050] More specifically, when the floor scrubber is pushed forward, the roller body 2 rotates in a first direction, and when the locking portion is locked with the roller body 2, the first elastic structure 3 undergoes elastic deformation, and at this time, the first elastic structure 3 stores force; at this time, when the floor scrubber is pushed backward, the roller body 2 rotates in the opposite direction of the first direction, and when the elastic reset force of the first elastic structure 3 acts on the roller body 2 (releasing the stored force), it pushes the roller body 2 to rotate in the opposite direction of the first direction, providing a backward pulling assist, thereby reducing the resistance of the floor scrubber when it is pulled backward, and using a low-cost mechanical structure to improve the problem that the interference between the roller brush of the floor scrubber and the ground is large, and when the roller brush rotates, a relatively large driving force consistent with the rotation direction of the roller brush is applied to the machine, and the driving force will cause the floor scrubber to have excessive traction or resistance on the operator, resulting in a poor user experience. Technical problems.

[0051] See also Figure 4 The wheel axle 1 is used for fixed installation in the cleaning equipment. When the floor scrubber is pushed, the roller body 2 rotates around the wheel axle 1. More specifically, the roller body 2 includes a wheel body 22 and a wheel cover 23. A first cavity with a first opening along the axial direction is formed in the wheel body 22. The wheel cover 23 covers the first opening. The wheel body 22 is rotatably installed on the wheel axle 1. When the roller body 2 rotates relative to the wheel axle 1, the wheel body 22 and the wheel cover 23 rotate relative to the wheel axle 1 together. During specific installation, the wheel body 22 or the wheel cover 23 is installed on the wheel axle 1 through a first sleeve.

[0052] One end of the first elastic structure 3 is fixedly mounted on the axle 1, and the other end is fixedly arranged with one end 4a of the locking structure 4. When the locking structure 4 is in a locked state, the roller body 2 can move together with the first elastic structure 3. In specific implementation, the first elastic structure 3 can be mounted on the axle 1 through the second sleeve 314. The second sleeve 314 is fixedly matched with the axle 1 through a keyway to achieve axial and radial fixation. One end of the first elastic structure 3 is mounted on the second sleeve 314. When the first elastic structure 3 accumulates force, the roller body 2 drives the first elastic structure 3 to move so that the first elastic structure 3 undergoes elastic deformation; when the first elastic structure 3 releases force, the reset force of the first elastic structure 3 applies force to the roller body 2, providing a driving force for the roller body 2.

[0053] More specifically, the first elastic structure 3 includes a mounting seat structure 31 and an elastic reset structure 32, wherein the mounting seat structure 31 is rotatably mounted on the wheel axle 1, and the elastic reset structure 32 is mounted between the wheel axle 1 and the mounting seat structure 31, and one end 4a of the locking structure 4 is fixedly arranged with the mounting seat structure 31, so that the mounting seat 31 can protect the elastic reset structure 32 on the one hand, and limit the movable stroke of the elastic reset structure 32 along the radial direction of the wheel axle 1 on the other hand. When the locking portion 4b of the other end 4b of the locking structure 4 is locked with the roller body 2, the roller body 2 and the mounting seat structure 31 are restricted to move together, and when the mounting seat structure 31 rotates, the elastic reset structure 32 is driven to rotate, or when the elastic reset structure 32 is reset, the mounting seat structure 31 is driven to rotate to apply a rotation assist to the roller body 2.

[0054] The elastic reset structure 32 is a structure that can be elastically deformed along the tangential direction of the roller body 2, such as a torsion spring, so that the expansion and contraction in the rotation direction can be achieved. In this embodiment, the elastic reset structure 32 is a volute spring 321. The inner ring of the volute spring 321 is fixed to the wheel shaft 1, and the outer ring of the volute spring 321 is fixed to the mounting seat structure 31; or, the outer ring of the volute spring 321 is fixed to the wheel shaft 1, and the inner ring of the volute spring 321 is fixed to the mounting seat structure 31. In this way, when the locking portion is in a locked state and the roller body 2 rotates in the first direction, the locking portion at the other end of the locking structure 4 drives the locking structure 4 to rotate. Since one end 4a of the locking structure 4 is fixedly arranged with the mounting seat structure 31, the locking structure 4 drives the mounting seat structure 31 to rotate. At this time, no matter one of the outer ring or the inner ring of the volute spring 321 is fixed to the wheel shaft, and the other is fixed to the mounting seat structure 31, the volute spring can be elastically deformed and force can be stored. The specific fixing method of the spiral spring 321 can be determined according to the requirements. In this embodiment, the inner ring of the spiral spring 321 is fixed to the wheel shaft 1, and the outer ring of the spiral spring 321 is fixed to the mounting seat structure 31. For the convenience of description, the elastic reset structure 32 is taken as an example of the spiral spring 321, but it does not mean that the elastic reset structure 32 is limited to the spiral spring 321.

[0055] The locking structure 4 includes a locking seat structure 41 and a locking member 42, wherein the locking seat structure 41 is installed on the mounting seat structure 31, and the locking member 42 is installed on the locking seat structure 41, and the locking member 42 has the locking portion and can be movably arranged along the radial direction; the inner wall of the roller body 2 is circumferentially provided with a first matching portion that is locked with the locking portion, so that the locking structure 4 can move along the radial direction of the roller body 2 and have a locked state locked with the roller body 2 or an unlocked state unlocked.

[0056] The side of the locking seat structure 41 can be fixedly connected to the side of the mounting seat structure 31. By connecting the side, the connection surface between the locking seat structure 41 and the mounting seat structure 31 can be enlarged, the connection stability can be improved, and the assembly is convenient. Of course, the connection position of the locking seat structure 41 and the mounting seat structure 31 can also be connected in other ways, such as one end surface of the locking seat structure 41 is connected to one end surface of the mounting seat structure 31, etc.

[0057] Through the connection between the locking seat structure 41 and the mounting seat structure 31, a position outside the locking portion in the locking member 42 of the locking structure 4 is indirectly fixedly connected to the outer ring of the spiral spring 321 in the first elastic structure 3, thereby realizing that the roller body drives the spiral spring 321 to store force during the rotation process. By providing the locking seat structure 41, on the one hand, it can play a role in fixing and protecting the locking member 42, and on the other hand, it can also improve the stability and flexibility of the connection between the locking structure and the first elastic structure, and facilitate assembly.

[0058] More specifically, the locking seat structure 41 is hollow and has a second opening 411 radially facing the inner wall of the roller body 2, and a second cavity 412, the second cavity 412 is connected to the second opening 411, the locking member 42 extends radially, and one end of the locking member 42 is accommodated in the second cavity 412, and the other end of the locking member 42 extends out of the second cavity 412 from the second opening 411. The other end of the locking member 42 has a locking portion, and has a movable stroke for locking or unlocking with the first matching portion.

[0059] More specifically, the first mating portion includes a plurality of concave-convex structures 211 arranged circumferentially along the inner wall of the roller body 2; the locking member 42 can be elastically retracted and arranged along the radial direction of the roller body 2, and the locking portion is elastically inserted into one or more of the concave-convex structures 211, so that it is easy to automatically stop when the power storage is completed, automatically release when reversing, and continue to store power when forward rotating. Specifically, when the roller body 2 rotates in the first direction and the scroll spring 321 stores power, the locking portion of the locking member 42 elastically abuts against the concave-convex structure 211, so that the locking member 42 is driven to rotate together when the roller body 2 rotates. Since the locking seat structure 41 is fixed to the mounting seat structure 31, the locking member 42 drives the mounting seat structure 31 to move together, and the scroll spring 321 undergoes elastic deformation and stores power; when the accumulated force of the scroll spring 321 exceeds the resistance of the locking member 42 to the roller body 2, the locking portion begins to move along the concave-convex structure 2 11 slides, at this time the mounting seat structure 31 no longer rotates with the roller body 2, at this time the roller body 2 continues to rotate in the first direction, and the volute spring 321 no longer stores force; at this time when the roller body 2 rotates in the opposite direction of the first direction, the locking part and the concave-convex structure 211 are plugged and matched again (for example, the locking part is plugged in the concave part), and the volute spring 321 reacts the accumulated force on the roller body 2, providing assistance for the roller body 2 to rotate in the opposite direction of the first direction, reducing the pulling force when the roller body 2 moves in the opposite direction of the first direction. When the volute spring 321 has been fully released or partially released, when the scrubber rotates in the first direction again, it can continue to store force; when the scrubber rotates in the opposite direction of the first direction, it continues to assist, and so on and so forth.

[0060] In addition, it should be noted that after the scroll spring 321 accumulates force when the roller body 2 rotates in the first direction, and after the scroll spring 321 is released after the roller body 2 rotates in the opposite direction to the first direction, if the roller body 2 continues to rotate in the opposite direction to the first direction, it can start to accumulate force in the opposite direction. When the reverse accumulated force exceeds the resistance of the locking member 42 to the roller body 2 again, the locking member starts to slide along the concave-convex structure 211, and the mounting seat structure 31 no longer rotates with the roller body 2 and stops accumulating force. Since the roller brush of the floor scrubber usually has a large amount of interference with the ground, a relatively large driving force consistent with the rotation direction of the roller brush is applied to the machine when the roller brush rotates. In order to improve the user experience, it is possible to accumulate force only when the roller body 2 rotates forward, and release the accumulated force when the roller body 2 rotates in the opposite direction, that is, when the roller body 2 rotates in the opposite direction and the accumulated force of the scroll spring 321 is released, even if the roller body 2 continues to rotate in the opposite direction, it will not continue to accumulate force.

[0061] See also Figure 5 and Figure 6The roller assembly 100 for cleaning equipment also includes a matching ring 21. The matching ring 21 can be integrally formed with the roller body 2, or can be fixedly mounted on the inner wall of the roller body 2, and no specific restrictions are made here. The inner wall of the matching ring 21 is provided with a plurality of circumferentially arranged concave-convex structures 211. Each concave-convex structure 211 includes a groove with a notch facing the radial direction, and the groove includes a first groove wall 211a and a second groove wall 211b arranged in sequence along the first direction. The angle between the first groove wall 211a and the radial direction is α, and the angle between the second groove wall 211b and the radial direction is β, α<β, so that it is more convenient and beneficial for the locking portion to unlock the roller body 2 when the first elastic structure 3 completes the power storage. In order to make the roller body 2 store power in the forward direction, the roller body 2 will not store power or store less power when it rotates in the reverse direction, 30°<α<60°. The specific size of α is determined according to the performance parameters of the spiral spring 321, so that the locking portion can easily escape from the concave-convex structure 211 where it is currently located when the spiral spring 321 has completed accumulating force.

[0062] The number of the locking structures 4 can be at least three, so that the force can be more evenly applied, and at least three locking structures 4 are evenly arranged along the circumference of the axle 1. In this embodiment, the number of the locking structures 4 is four, and the locking portion of each locking structure 4 is plugged into one of the concave-convex structures 211, so that the force is more evenly applied.

[0063] The locking member 42 has a plugged state in which it is plugged with the first matching portion and a slipped state in which it is unplugged from the first matching portion. In the initial state, the locking member 42 and the first matching portion are in a plugged state (taking the first matching portion as the concave-convex structure 211 as an example, the locking member 42 is plugged into a certain concave-convex structure 211); when the spiral spring 321 has completed the accumulation of force or the accumulated force of the spiral spring 321 has been released, the locking member 42 and the first matching portion are in a slipped state (taking the first matching portion as the concave-convex structure 211 as an example, the locking member 42 slips on multiple concave-convex structures 211, and is not plugged with a certain fixed concave-convex structure 211).

[0064] The locking structure 4 also includes a second elastic structure 43, which is arranged between the locking seat structure 41 and the locking member 42, so that the locking part is elastically inserted into the first matching part. Since the locking part is elastically arranged on the first matching part, it is convenient for the locking member 42 to switch from the locked state to the unlocked state when the power storage is completed. At this time, the locking member 42 is in a slipping state. The second elastic structure 43 can be an elastic member that can be retracted and contracted in a radial straight line. In this embodiment, the second elastic structure 43 is a compression spring. The second elastic structure 43 is arranged in the second cavity 412 of the locking seat structure 41, and is used to provide an elastic reset force to the locking member 42, so that the locking member 42 is elastically pressed on the concave-convex structure 211.

[0065] In addition, the locking member 42 may be a latch pin, such as a ball pin or a cylindrical pin shaft, or may be other plug-in matching structures. The specific structure of the locking member 42 is not specifically limited herein.

[0066] The mounting seat structure 31 includes a mounting box body 311 and a mounting cover plate 312. The mounting box body 311 is open at one axial end of the wheel axle 1 and has a mounting cavity 313. The mounting box body 311 is rotatably mounted on the wheel axle 1. The mounting cover plate 312 covers the opening of the mounting box body 311 and can rotate with the mounting box body 311. The spiral spring 321 is installed in the mounting cavity 313, which can protect the spiral spring 21 on the one hand and limit the axial movement of the spiral spring 321 on the other hand.

[0067] Example 2

[0068] See also Figure 1 The present invention further provides a cleaning device 200, which includes the above-mentioned roller assembly 100 for cleaning devices. An embodiment of the cleaning device 200 includes an embodiment of the above-mentioned roller assembly 100 for cleaning devices. The beneficial effects of the above-mentioned roller assembly 100 for cleaning devices are also applicable to the cleaning device 200.

[0069] The cleaning device 200 may be a handheld scrubber, a handheld mop, a handheld washer-mop all-in-one, etc. It may also be other cleaning devices equipped with the above-mentioned roller assembly, which will not be illustrated one by one here.

[0070] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which 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; A roller body rotatably mounted on the wheel axle; A first elastic structure, one end of which is fixedly mounted on the wheel axle, and the first elastic structure can be elastically deformed at least along the tangential direction of the roller body; A locking structure, one end of which is fixedly arranged with the other end of the first elastic structure, and the other end of which has a locking portion, wherein the locking portion has a locking state locked with the roller body; Among them, when the locking portion is in a locked state and the roller body rotates along a first direction, the roller body pushes the locking portion to drive the locking structure to rotate, and the locking structure links the other end of the first elastic structure to rotate, and the first elastic structure undergoes elastic deformation along the tangential direction of the roller body; when the locking portion is in a locked state and the roller body rotates in the opposite direction to the first direction, when the elastic reset force of the first elastic structure acts on the roller body, it pushes the roller body to rotate in the opposite direction of the first direction.

2. The roller assembly for cleaning equipment according to claim 1, characterized in that: The first elastic structure includes a mounting seat structure and an elastic reset structure, the mounting seat structure is rotatably mounted on the wheel axle, and the elastic reset structure is installed between the wheel axle and the mounting seat structure; One end of the locking structure is fixedly disposed on the mounting seat structure.

3. The roller assembly for cleaning equipment according to claim 2, characterized in that: The elastic reset structure is a scroll spring; The inner ring of the spiral spring is fixed to the wheel axle, and the outer ring of the spiral spring is fixed to the mounting seat structure; or, the outer ring of the spiral spring is fixed to the wheel axle, and the inner ring of the spiral spring is fixed to the mounting seat structure.

4. The roller assembly for cleaning equipment according to claim 3, characterized in that: The locking structure comprises a locking seat structure and a locking member, wherein the locking seat structure is mounted on the mounting seat structure, the locking member is mounted on the locking seat structure, and the locking member has the locking portion and can be movably arranged in the radial direction; The inner wall of the roller body is provided with a first matching portion along the circumferential direction and is locked with the locking portion.

5. The roller assembly for cleaning equipment according to claim 4, characterized in that: The first matching portion includes a plurality of concave-convex structures arranged circumferentially along the inner wall of the roller body; The locking member can be elastically telescopically arranged along the radial direction of the roller body, and the locking portion is elastically inserted into one or more of the concave-convex structures.

6. The roller assembly for cleaning equipment according to claim 5, characterized in that: There are four locking structures, and the locking portion of each locking structure is plugged into and matched with one of the concave-convex structures.

7. The roller assembly for cleaning equipment according to claim 5, characterized in that: Each of the concave-convex structures includes a groove with a notch facing the radial direction, the groove includes a first groove wall and a second groove wall arranged in sequence along a first direction, the angle between the first groove wall and the radial direction is α, the angle between the second groove wall and the radial direction is β, and α<β.

8. The roller assembly for cleaning equipment according to claim 4, characterized in that: The locking structure further comprises a second elastic structure, and the second elastic structure is arranged between the locking seat structure and the locking member so that the locking portion is elastically inserted into the first matching portion.

9. The roller assembly for a cleaning device according to claim 3, characterized in that: The mounting seat structure comprises a mounting box body and a mounting cover plate, wherein the mounting box body is open at one end along the axial direction of the wheel axle and has a mounting cavity, the mounting box body is rotatably mounted on the wheel axle, and the mounting cover plate covers the opening of the mounting box body and can rotate together with the mounting box body; The spiral spring is installed in the installation cavity.

10. A cleaning device, characterized in that: The invention comprises a roller assembly for a cleaning device as claimed in any one of claims 1 to 9.

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