Roller assembly for a cleaning device and a cleaning device

Abstract

The application discloses a roller assembly for a cleaning device and the cleaning device, the roller assembly for the cleaning device comprising a wheel shaft, a roller body, a first elastic structure and a locking structure, the roller body being rotatably installed on the wheel shaft, one end of the first elastic structure being fixedly installed on the wheel shaft, one end of the locking structure being fixedly arranged with the other end of the first elastic structure, the other end having a locking part, the locking part having a locking state of being locked with the roller body and an unlocking state of being unlocked with the roller body; when the locking part is in the locking state and the roller body rotates in a first direction, the roller body drives the other end of the first elastic structure to rotate, and the first elastic structure is elastically deformed; when the locking part is in the locking state and the roller body rotates in a direction opposite to the first direction.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cleaning devices, and particularly relates to a roller assembly for a cleaning device and the cleaning device. BACKGROUND

[0002] With the development of science and technology, cleaning devices have also developed rapidly. Cleaning devices include floor mopping robots, handheld floor mopping machines, handheld floor sweeping machines, and the like. Taking a handheld cleaning device as an example, a user will perform a forward pushing or rearward pulling operation to complete cleaning. The handheld cleaning device is usually relatively heavy, and the user will feel relatively laborious when pushing or pulling the machine forward or rearward. Taking a handheld floor washing machine as an example, since the interference amount between the rolling brush of the floor washing machine and the ground is relatively large, the rolling brush will exert a relatively large driving force on the machine in the same direction as the rotation direction of the rolling brush when the rolling brush rotates. The driving force will cause the floor washing machine to exert a relatively large traction force or resistance on the operator, resulting in poor user experience. SUMMARY

[0003] Therefore, the present application provides a roller assembly for a cleaning device and the cleaning device, which aims to solve the technical problem that the interference amount between the rolling brush of the cleaning device and the ground is relatively large, the rolling brush will exert a relatively large driving force on the machine in the same direction as the rotation direction of the rolling brush when the rolling brush rotates, the driving force will cause the floor washing machine to exert a relatively large traction force or resistance on the operator, resulting in poor user experience.

[0004] To solve the above technical problem, the present application provides a roller assembly for a cleaning device, which comprises:

[0005] a wheel shaft;

[0006] a roller body rotatably mounted on the wheel shaft;

[0007] a first elastic structure fixedly mounted at one end on the wheel shaft, the first elastic structure being capable of elastically deforming in a tangential direction of the roller body;

[0008] a locking structure fixedly arranged at the other end of the first elastic structure, the other end of the locking structure having a locking portion, the locking portion having a locking state of being locked with the roller body;

[0009] When the locking portion is in the locking state and the roller body rotates in a first direction, the roller body pushes the locking portion to drive the locking structure to rotate, the locking structure drives the other end of the first elastic structure to rotate, and the first elastic structure elastically deforms at least in the tangential direction of the roller body. When the locking portion is in the locking state and the roller body rotates in the reverse direction of the first direction, the elastic restoring force of the first elastic structure acts on the roller body to push the roller body to rotate in the reverse 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 return structure, the mounting seat structure is rotatably mounted on the wheel shaft, and the elastic return structure is mounted between the wheel shaft and the mounting seat structure.

[0011] One end of the locking structure is fixedly arranged with the mounting seat structure.

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

[0013] The inner ring of the volute spring is fixed with the wheel shaft, and the outer ring of the volute spring is fixed with the mounting seat structure; or the outer ring of the volute spring is fixed with the wheel shaft, and the inner ring of the volute spring is fixed with the mounting seat structure.

[0014] Preferably, in the roller assembly for cleaning equipment, the locking structure comprises a locking seat structure and a locking piece, the locking seat structure is mounted on the mounting seat structure, the locking piece is mounted on the locking seat structure, and the locking piece has the locking part and is arranged to be movable in the radial direction.

[0015] The inner wall of the roller body is circumferentially provided with a first matching part for locking and matching with the locking part.

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

[0017] The locking piece is elastically telescopic along the radial direction of the roller body, and the locking part 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 part of each locking structure is inserted and matched with one of the concave-convex structures.

[0019] Preferably, in the roller assembly for cleaning equipment, each of the concave-convex structures comprises a radial slot with a notch, the notch comprises a first slot wall and a second slot wall arranged in sequence in a first direction, the first slot wall has an angle α with the radial direction, the second slot wall has an angle β with the radial direction, and α < β.

[0020] Preferably, in the roller assembly for cleaning equipment, the locking structure further comprises a second elastic structure arranged between the locking seat structure and the locking piece to enable the locking part to be elastically inserted into the first matching part.

[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 provided with an open 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 open end of the mounting box body and can rotate with the mounting box body.

[0022] The volute spring is mounted in the mounting cavity.

[0023] In order to achieve the above-mentioned purpose, the application further provides a cleaning equipment comprising the roller assembly for cleaning equipment.

[0024] The technical scheme provided by the application has the following advantages:

[0025] The roller assembly for cleaning equipment provided by the application, taking a scrubber as an example of the cleaning equipment, when the scrubber is pushed forward, the roller body rotates in a first direction (assuming that the first direction is the forward direction), the first elastic structure is elastically deformed when the locking part is locked with the roller body, and the first elastic structure is stored with power at this time; when the scrubber is pushed backward, the roller body rotates in the reverse direction of the first direction, the elastic reset force of the first elastic structure acts on the roller body (releases the stored power) at this time, the roller body is pushed to rotate in the reverse direction of the first direction, and rear pulling assistance is provided, so that the resistance of the scrubber when the scrubber is pulled backward can be reduced, and the technical problem that the interference amount between the rolling brush of the cleaning equipment and the ground is large in the prior art, the rolling brush rotates and exerts a relatively large driving force on the machine in the same direction as the rotation direction of the rolling brush, the driving force causes the scrubber to exert too large a traction force or resistance on the operator, and the user experience is poor is solved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the application or the technical scheme in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 A perspective view of an embodiment of the cleaning equipment provided by the application;

[0028] Figure 2 A perspective view of an embodiment of the cleaning equipment provided by the application; Figure 1 A perspective view of an embodiment of the roller assembly for cleaning equipment in the application;

[0029] Figure 3 A perspective view of an embodiment of the roller assembly for cleaning equipment in the application; Figure 2 An exploded schematic view of the roller assembly for cleaning equipment in the application;

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

[0031] Figure 5 For Figure 2 A perspective view of an embodiment of a partial structure;

[0032] Figure 6 For Figure 5 A schematic view of an embodiment of a mating ring.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034]

[0035]

[0036] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments, with reference to the accompanying drawings. DETAILED DESCRIPTION

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

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

[0039] In the present application, the orientation words such as "up", "down", "top", "bottom" used without the opposite description are generally directed to the direction shown in the drawings, or to the vertical, perpendicular or gravity direction of the components themselves. Similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of the components themselves, but the above-mentioned orientation words are not used to limit the present application.

[0040] The cleaning device includes a floor cleaning robot, a handheld floor cleaning machine, a handheld sweeper, etc. Taking a handheld cleaning device as an example, the user will perform a forward pushing or rear pulling operation to complete cleaning. The handheld cleaning device is usually heavy, and the user will feel more laborious when pushing or pulling the machine forward or backward. Taking a handheld scrubber as an example, since the interference amount between the scrubber brush and the ground is large, the scrubber brush will exert a relatively large driving force in the same direction as the rotation direction of the scrubber brush when rotating. The driving force will cause the scrubber to have too large a traction or resistance to the operator, resulting in poor user experience.

[0041] Generally, the components such as motors, circuit boards, sensors, etc. can be added to solve the above problems, but the cost of the scheme for driving the motor is generally high, and the motor needs a reaction time when switching between forward pushing and backward pulling, which causes a delay in action and a sense of jerk.

[0042] Embodiment 1

[0043] To solve the above problems, the present application provides a roller assembly for cleaning equipment, please refer to Figures 2 to 4 The roller assembly for cleaning equipment 100 includes an axle 1, a roller body 2, a first elastic structure 3, and a locking structure 4. The roller body 2 is rotatably mounted on the axle 1. One end 3a of the first elastic structure 3 is fixedly mounted on the axle 1. The first elastic structure 3 can elastically deform at least in 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 part. The locking part has a locking state with the roller body 2. When the locking part is in the locking state and the roller body 2 rotates in a first direction, the roller body 2 pushes the locking part to drive the locking structure 4 to rotate. The locking structure 4 links the other end 3b of the first elastic structure 3 to rotate. The first elastic structure 3 elastically deforms in the tangential direction of the roller body 2. When the locking part is in the locking state and the roller body 2 rotates in the opposite direction of the first direction, the elastic reset force of the first elastic structure 3 in the tangential direction of the roller body 2 acts on the roller body 2 to push the roller body 2 to rotate in the opposite direction of the first direction.

[0044] The first elastic structure 3 can be a torsion spring, a spiral spring, etc. Thus, the extension 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 arranged in the radial direction or the axial direction of the axle 1. However, one end 3a and the other end 3b of the first elastic structure 3 are not limited to the above-mentioned position points arranged in the radial direction or the axial direction. One end 4a and the other end 4b of the locking structure 4 are different positions of the locking structure 4. For example, one end 4a and the other end 4b of the locking structure 4 can be different position points arranged in the radial direction or the axial direction of the axle 1. However, one end 4a and the other end 4b of the locking structure 4 are not limited to the above-mentioned position points arranged in the radial direction or the axial direction.

[0045] The fixing manner of one end 4a of the locking structure 4 and the other end 3b of the first elastic structure 3 is not limited, for example, the fixing can be achieved by clamping, screw fixing, or other manners. The specific structure of the locking part and the locking manner between the locking part and the roller body 2 are not limited, for example, the locking part can be a lock tongue structure, the inner side of the roller body 2 is provided with a cavity, and the lock 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, and the like.

[0046] The first elastic structure 3 and the locking structure 4 can be arranged in the roller assembly 100 in sequence along the axial direction of the wheel shaft, so as to improve the compactness of the space 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 manners in the roller assembly 100, which is not limited herein.

[0047] In specific work, when the roller body 2 is driven to rotate in the first direction (for example, forward) by an external force, the locking part and the roller body 2 are in the locked state, and the roller body 2 drives the locking part to rotate in the first direction during rotation, and since 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 3b of the first elastic structure 3 is driven to rotate along the tangential direction of the roller body 2 when the locking structure 4 rotates, and at this time, the first elastic structure 3 is elastically deformed along the tangential direction of the roller body 2, and at this time, the first elastic structure 3 starts to store energy. When the roller body 2 is driven to rotate in the reverse direction of the first direction (for example, backward) by an external force, since the locking part and the roller body 2 are in the locked state and the roller body 2 rotates in the reverse direction of the first direction, since one end 4a of the locking structure 4 is fixedly arranged with 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, and since the locking part and the roller body 2 are in the locked state, the locking part exerts a reverse force along the first direction on the roller body 2 to provide a reverse assist force (a backward assist force) along the first direction. Thus, when the roller body 2 is driven in the first direction, a part of the driving force in the forward direction can be offset, so as to avoid the traction force on the operator being too large, and when the roller body 2 is driven in the reverse direction of the first direction, the first elastic structure 3 releases the stored energy to provide a reverse assist force along the first direction on the roller body 2, so as to avoid the resistance being too large to reduce the user experience.

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

[0049] In the following, the cleaning device is taken as an example of a scrubber for the convenience of description, but it is not meant that the cleaning device is limited to the scrubber. In addition, since the interference amount of the scrubber brush with the ground is large, the scrubber brush exerts a relatively large driving force on the machine in the same direction as the rotation direction of the scrubber brush when the scrubber brush rotates. In the present embodiment, the first direction is the rotation direction of the roller body 2 when the scrubber is pushed forward, so that a part of the driving force in the forward direction can be offset when the force is stored, and some assistance can be provided when the force is released by pushing backward.

[0050] More specifically, when the scrubber is pushed forward, the roller body 2 rotates in the first direction, and the first elastic structure 3 is elastically deformed when the locking portion is locked with the roller body 2, at which time the first elastic structure 3 stores the force. When the scrubber is pushed backward at this time, the roller body 2 rotates in the opposite direction of the first direction, and the elastic restoring force of the first elastic structure 3 acts on the roller body 2 (to release the stored force), which pushes the roller body 2 to rotate in the opposite direction of the first direction, thereby providing backward pulling assistance, so that the resistance of the scrubber when it is pulled backward can be reduced. By using a low-cost mechanical structure, the technical problem that the interference amount of the scrubber brush with the ground is large, the scrubber brush exerts a relatively large driving force on the machine in the same direction as the rotation direction of the scrubber brush when the scrubber brush rotates, and the driving force causes the scrubber to exert too much traction or resistance on the operator, thereby resulting in poor user experience, is improved.

[0051] Please refer to Figure 4 , the wheel shaft 1 is used to be fixedly installed in the cleaning device, and the roller body 2 rotates around the wheel shaft 1 when the scrubber is pushed. More specifically, the roller body 2 includes a wheel body 22 and a wheel cover 23, the wheel body 22 has a first cavity with a first opening in the axial direction formed therein, and the wheel cover 23 covers the first opening. The wheel body 22 is rotatably installed on the wheel shaft 1, and the wheel body 22 and the wheel cover 23 rotate together relative to the wheel shaft 1 when the roller body 2 rotates relative to the wheel shaft 1. Specifically, the wheel body 22 or the wheel cover 23 is installed on the wheel shaft 1 through a first shaft sleeve.

[0052] One end of the first elastic structure 3 is fixedly installed on the wheel shaft 1, and the other end is fixedly arranged with one end 4a of the locking structure 4, so that the roller body 2 can move together with the first elastic structure 3 when the locking structure 4 is in the locked state. Specifically, the first elastic structure 3 can be installed on the wheel shaft 1 through a second shaft sleeve 314, the second shaft sleeve 314 is fixedly connected with the wheel shaft 1 through a key groove to realize axial and radial fixation, and one end of the first elastic structure 3 is installed on the second shaft sleeve 314. When the first elastic structure 3 stores the force, the roller body 2 drives the first elastic structure 3 to move, so that the first elastic structure 3 is elastically deformed; when the first elastic structure 3 releases the force, the restoring force of the first elastic structure 3 acts on the roller body 2, thereby providing the pushing assistance of the roller body 2.

[0053] More specifically, the first elastic structure 3 comprises a mounting seat structure 31 rotatably mounted on the wheel shaft 1 and an elastic return structure 32 mounted between the wheel shaft 1 and the mounting seat structure 31, and one end 4a of the locking structure 4 is fixedly arranged on the mounting seat structure 31. In this way, the mounting seat structure 31 can protect the elastic return structure 32 and limit the movement of the elastic return structure 32 along the radial direction of the wheel shaft 1. When the locking part at 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 limited to move together, and the mounting seat structure 31 drives the elastic return structure 32 to rotate when the mounting seat structure 31 rotates, or the mounting seat structure 31 drives the elastic return structure 32 to rotate to apply rotational assistance to the roller body 2 when the elastic return structure 32 returns.

[0054] The elastic return 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 it can be stretched and contracted in the rotational direction. In this embodiment, the elastic return 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 part at the other end of the locking structure 4 drives the locking structure 4 to rotate, and one end 4a of the locking structure 4 is fixedly arranged on the mounting seat structure 31, the locking structure 4 drives the mounting seat structure 31 to rotate. At this time, no matter which one of the outer ring or the inner ring of the volute spring 321 is fixed to the wheel shaft 1 and the other is fixed to the mounting seat structure 31, the volute spring can be elastically deformed and store energy. The specific fixing method of the volute spring 321 can be determined according to the requirements. In this embodiment, 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. In the following description, the elastic return structure 32 is taken as an example of the volute spring 321 for convenience of description, but it does not mean that the elastic return structure 32 is limited to the volute spring 321.

[0055] The locking structure 4 comprises a locking seat structure 41 mounted on the mounting seat structure 31 and a locking piece 42 mounted on the locking seat structure 41, and the locking piece 42 has the locking part and can be arranged to move along the radial direction. The inner wall of the roller body 2 is provided with a first matching part along the circumferential direction to lock and match with the locking part, so that the locking structure 4 can move along the radial direction of the roller body 2 and has a locked state of locking with the roller body 2 or an unlocked state.

[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 sides, the connection surface between the locking seat structure 41 and the mounting seat structure 31 can be increased, improving connection stability and facilitating assembly. Of course, the connection position between the locking seat structure 41 and the mounting seat structure 31 can also adopt other methods, such as connecting one end face of the locking seat structure 41 to one end face of the mounting seat structure 31, etc.

[0057] By connecting the locking seat structure 41 and the mounting seat structure 31, a position outside the locking part of 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 enabling the roller body to drive the spiral spring 321 to store force during rotation. By setting the locking seat structure 41, it can fix and protect the locking member 42, and 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 toward the inner wall of the roller body 2, and a second cavity 412. The second cavity 412 communicates with the second opening 411. The locking member 42 extends radially, with one end of the locking member 42 housed in the second cavity 412 and the other end of the locking member 42 extending out of the second cavity 412 from the second opening 411. The other end of the locking member 42 has a locking portion and a travel that engages or unlocks with the first mating portion.

[0059] More specifically, the first matching part includes a plurality of concave-convex structures 211 arranged circumferentially along the inner wall of the roller body 2; the locking part 42 is elastically arranged along the radial direction of the roller body 2, and the locking part is elastically inserted into one or more of the concave-convex structures 211, so that the force storage is completed automatically, the force release is automatically released when reversed, and the force storage continues when rotated in the forward direction. Specifically, when the roller body 2 rotates in the first direction, the volute spring 321 stores force, the locking part of the locking part 42 elastically abuts against the concave-convex structure 211, so that the roller body 2 drives the locking part 42 to rotate together when rotating, and since the locking seat structure 41 is fixed with the mounting seat structure 31, the locking part 42 drives the mounting seat structure 31 to move together, the volute spring 321 elastically deforms and stores force; when the force accumulated by the volute spring 321 exceeds the resistance of the locking part 42 to the roller body 2, the locking part starts to slide along the concave-convex structure 211, 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 reverse direction of the first direction, the locking part and the concave-convex structure 211 are inserted and matched again (for example, the locking part is inserted into the concave part), the volute spring 321 reacts the accumulated force on the roller body 2, providing assistance to the roller body 2 rotating in the reverse direction of the first direction, reducing the pulling force when the roller body 2 moves in the reverse direction of the first direction. When the volute spring 321 stores and releases the force completely or partially, the scrubber drier rotates in the first direction again, and the force storage can continue; when the scrubber drier rotates in the reverse direction of the first direction, the assistance continues, and so on.

[0060] In addition, it should be noted that after the roller body 2 rotates in the first direction and the volute spring 321 stores force, and after the roller body 2 rotates in the reverse direction of the first direction and the volute spring 321 releases the stored force completely, if the roller body 2 continues to rotate in the reverse direction of the first direction, reverse force storage can be started, and when the reverse force storage exceeds the resistance of the locking part 42 to the roller body 2 again, the locking part starts to slide along the concave-convex structure 211, at this time the mounting seat structure 31 no longer rotates with the roller body 2, and the force storage stops. Since the interference between the scrubber drier brush and the ground is usually large, the brush rotation will exert a relatively large driving force on the machine in the direction consistent with the brush rotation, in order to improve the user experience, the force storage can be performed only when the roller body 2 rotates in the forward direction, and the accumulated force is released when the roller body 2 rotates in the reverse direction, that is, when the roller body 2 rotates in the reverse direction and the volute spring 321 releases the accumulated force completely, the force storage will not continue even if the roller body 2 continues to rotate in the reverse direction.

[0061] Please refer to Figure 5 and Figure 6The roller assembly 100 for cleaning equipment further comprises a matching ring 21, which can be integrally formed with the roller body 2 or fixedly installed on the inner wall of the roller body 2, and is not specifically limited herein. The inner wall of the matching ring 21 is provided with a plurality of circumferentially arranged convexo-concave structures 211. Each convexo-concave structure 211 comprises a radial slot with a notch, and the slot comprises a first slot wall 211a and a second slot wall 211b arranged in sequence in a first direction, the first slot wall 211a has an angle α with the radial direction, the second slot wall 211b has an angle β with the radial direction, and α < β, so that the locking part is more convenient and beneficial to be unlocked from the roller body 2 when the first elastic structure 3 is fully charged. In order to make the roller body 2 positively charge, the roller body 2 will not charge or less charge when reversely rotating, and 30° < α < 60°. The specific size of α is determined according to the performance parameters of the volute spring 321, so that the locking part is convenient to be separated from the current convexo-concave structure 211 when the volute spring 321 is fully charged.

[0062] The number of the locking structures 4 can be at least three, so that the force is more uniform, and the at least three locking structures 4 are arranged and arranged uniformly along the circumference of the wheel shaft 1. In the embodiment, the number of the locking structures 4 is four, and the locking part of each locking structure 4 is inserted and matched with one of the convexo-concave structures 211, so that the force is more uniform.

[0063] The locking part 42 has an inserted state of being inserted with the first matching part and a slipping state of being separated from the first matching part. In the initial state, the locking part 42 is in the inserted state with the first matching part (for example, the first matching part is the convexo-concave structure 211, and the locking part 42 is inserted in a certain convexo-concave structure 211); when the volute spring 321 is fully charged or the force accumulated by the volute spring 321 is released, the locking part 42 is in the slipping state with the first matching part (for example, the first matching part is the convexo-concave structure 211, and the locking part 42 slips on a plurality of convexo-concave structures 211 without being inserted and matched with a certain fixed convexo-concave structure 211).

[0064] The locking structure 4 further comprises a second elastic structure 43 arranged between the locking seat structure 41 and the locking part 42, so that the locking part is elastically inserted in the first matching part. Since the locking part is elastically arranged in the first matching part, the locking part 42 is convenient to switch from the locked state to the unlocked state when the charging is completed, and the locking part 42 is in the slipping state at this time. The second elastic structure 43 can be a radial linear elastic member, and in the 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 part 42, so that the locking part 42 is elastically pressed on the convexo-concave structure 211.

[0065] In addition, the locking member 42 can be a pin, such as a ball pin or a cylindrical pin shaft, and can also be other plug-in structures. The specific structure of the locking member 42 is not limited here.

[0066] The mounting seat structure 31 includes a mounting box body 311 and a mounting cover plate 312. The mounting box body 311 is provided with an installation cavity 313 and is open at one end of the wheel shaft 1 in the axial direction, and is rotatably mounted on the wheel shaft 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 volute spring 321 is installed in the installation cavity 313. In this way, the volute spring 21 can be protected, and the axial movement of the volute spring 321 can be limited.

[0067] Embodiment 2

[0068] Please refer to Figure 1 The present application also provides a cleaning device 200, which includes the above-mentioned roller assembly 100 for a cleaning device. Embodiments of the cleaning device 200 include embodiments of the above-mentioned roller assembly 100 for a cleaning device. The advantages of the above-mentioned roller assembly 100 for a cleaning device also apply to the cleaning device 200.

[0069] The cleaning device 200 can be a handheld scrubber, a handheld mop, a handheld scrubbing and mopping all-in-one machine, and the like, and can also be other cleaning devices provided with the above-mentioned roller assembly. Here, they are not listed one by one.

[0070] Obviously, the above-described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments of the present application, those skilled in the art can make other different forms of changes or modifications without creative labor, which should all belong to the scope of protection of the present application.

Claims

1. A roller assembly for a cleaning apparatus, characterized by, include: axle; The roller body is rotatably mounted on the axle; The first elastic structure is fixedly mounted on the axle at one end, and the first elastic structure can undergo elastic deformation at least along the tangential direction of the roller body; The locking structure has one end fixedly disposed to the other end of the first elastic structure, and the other end has a locking part, which has a locking state that is locked to the roller body; When the locking part is in the locked state and the roller body rotates along the first direction, the roller body pushes the locking part to drive the locking structure to rotate. The locking structure rotates in conjunction with the other end of the first elastic structure, and the first elastic structure undergoes elastic deformation along the tangential direction of the roller body. When the locking part is in the locked state and the roller body rotates in the opposite direction to 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 to the first direction.

2. The roller assembly for a cleaning device of claim 1, wherein, The first elastic structure includes a mounting base structure and an elastic reset structure. The mounting base structure is rotatably mounted on the axle, and the elastic reset structure is installed between the axle and the mounting base structure. One end of the locking structure is fixedly installed with the mounting base structure.

3. The roller assembly for a cleaning device of claim 2, wherein, The elastic reset structure is a spiral spring; The inner ring of the spiral spring is fixed to the axle, and the outer ring of the spiral spring is fixed to the mounting base structure; or, the outer ring of the spiral spring is fixed to the axle, and the inner ring of the spiral spring is fixed to the mounting base structure.

4. The roller assembly for a cleaning device of claim 3, wherein, The locking structure includes a locking seat structure and a locking member. The locking seat structure is mounted on the mounting base structure, and the locking member is mounted on the locking seat structure. The locking member has the locking part and is radially movable. The inner wall of the roller body is provided with a first mating part along the circumferential direction, which is locked and engaged with the locking part.

5. The roller assembly for cleaning equipment as described in claim 4, characterized in that, The first mating part includes a plurality of concave and convex structures arranged circumferentially along the inner wall of the roller body; The locking member is elastically telescopically extendable along the radial direction of the roller body, and the locking part is elastically inserted into one or more of the concave and convex structures.

6. The roller assembly for cleaning equipment as described in claim 5, characterized in that, The number of locking structures is four, and the locking part of each locking structure is engaged with one of the concave and convex structures.

7. The roller assembly for cleaning equipment as claimed in claim 5, characterized in that, Each of the aforementioned concave-convex structures includes a groove with its opening facing radially. The groove includes a first groove wall and a second groove wall arranged sequentially along a first direction. The angle between the first groove wall and the radial direction is α, and the angle between the second groove wall and the radial direction is β, where α < β.

8. The roller assembly for cleaning equipment as claimed in claim 4, characterized in that, The locking structure further includes a second elastic structure, which is disposed between the locking seat structure and the locking member, so that the locking part is elastically inserted into the first mating part.

9. The roller assembly for cleaning equipment as claimed in claim 3, characterized in that, The mounting base structure includes a mounting box and a mounting cover. The mounting box is open at one end along the axial direction of the wheel axle and has a mounting cavity. The mounting box is rotatably mounted on the wheel axle. The mounting cover covers the opening of the mounting box and can rotate with the mounting box. The spiral spring is installed inside the mounting cavity.

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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