Cutting mechanism, roller brush device and cleaning equipment

Abstract

The present application relates to a cutting mechanism, a roller brush device and a cleaning device. When cleaning entanglements, the whole cutting assembly is driven to rotate around the axis, so that the transmission structure moves on the guiding surface. Since there are convex parts and concave parts on the guiding surface, during the movement of the transmission structure, it will successively pass through the convex parts and the concave parts, making the transmission structure undulate in the axial direction. This can drive the first cutting member or the second cutting member to undulate in the axial direction, causing relative reciprocating displacement between the first cutting member and the second cutting member, thereby achieving effective cutting. Also, since the part of the transmission structure in contact with the guiding surface is an arc surface, the contact during the transmission process is relatively smooth, effectively reducing the friction of relative movement, reducing the movement noise during the transmission process, and improving the service life and reliability of the mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of automatic cleaning, in particular to a cutting mechanism, a roller brush device and a cleaning device. Background Art

[0002] The floor washer, as a household intelligent cleaning tool, is widely loved by users. During the cleaning process, the water spraying component sprays water onto the roller brush to wet the roller brush, and the roller brush rolls on the floor to achieve the effect of washing and mopping the floor. However, during the cleaning process, the roller brush will more or less be entangled with hair, thin strings and other entanglements, seriously affecting the user experience of the product; at the same time, it also affects the cleaning effect.

[0003] Therefore, a cutting device is used to cut the entanglements such as hair, clean the surface of the roller brush, and restore the cleaning ability of the roller brush. However, limited by the structural design of the traditional cutting device, the cutting process has a large noise, a short operating life and poor reliability. Summary of the Invention

[0004] Based on this, it is necessary to provide a cutting mechanism, a roller brush device and a cleaning device for the problems of large noise, short operating life and poor reliability when cutting entanglements traditionally.

[0005] A cutting mechanism, the cutting mechanism includes: a support having an axis and a guiding surface around the outer periphery of the axis, the guiding surface including a protruding portion and a recessed portion distributed in a direction around the axis; a cutting assembly including a transmission structure and a first cutting member and a second cutting member that cooperate with each other, the transmission structure is connected to the first cutting member or the second cutting member and abuts against the guiding surface, and a portion of the transmission structure in contact with the guiding surface is an arc surface; wherein, when the cutting assembly rotates around the axis, the transmission structure sequentially passes through the protruding portion and the recessed portion, so that the first cutting member and the second cutting member move in a staggered manner in the axial direction.

[0006] In the above cutting mechanism, when cleaning the entanglements, the cutting assembly is driven to rotate around the axis as a whole, so that the transmission structure moves on the guiding surface. Since the guiding surface has a protruding portion and a recessed portion, during the movement of the transmission structure, it will sequentially pass through the protruding portion and the recessed portion, causing the transmission structure to rise and fall in the axial direction. This can drive the first cutting member or the second cutting member to rise and fall in the axial direction, causing relative reciprocating displacement between the first cutting member and the second cutting member, thereby achieving effective cutting. Also, since the portion of the transmission structure in contact with the guiding surface is an arc surface, the contact during the transmission process is relatively smooth, effectively reducing the friction of the relative movement, reducing the movement noise during the transmission process, and improving the service life and reliability of the mechanism.

[0007] In some of these embodiments, the transmission structure includes a transmission member and a ball. The transmission member is in transmission connection with the first cutting member or the second cutting member. The ball rolls on the transmission member and abuts against the guiding surface.

[0008] In some of these embodiments, a clamping groove is provided at one end of the transmission member. The ball is rotatably embedded in the clamping groove and at least partially protrudes outside the clamping groove.

[0009] In some of these embodiments, the transmission structure further includes an elastic member. The elastic member is used to elastically abut the ball against the guiding surface through the transmission member.

[0010] In some of these embodiments, the elastic member is a spring. The spring is sleeved on the transmission member. One end of the spring abuts against the transmission member, and the other end is used to abut against the inside of the roller brush.

[0011] In some of these embodiments, the transmission structure further includes a rocking member and a fixed seat. The rocking member is rotatably connected to the fixed seat, and its two ends are respectively rotatably connected to the transmission member and the first cutting member or the second cutting member.

[0012] In some of these embodiments, a first rotating shaft is provided on the fixed seat, a second rotating shaft is provided on the rocking member, a first moving hole extending along the length direction of the rocking member is provided on the rocking member, and a second moving hole extending along a direction intersecting with the axis direction is provided on the first cutting member or the second cutting member. The first rotating shaft is movably inserted through the first moving hole, and the second rotating shaft is movably inserted through the second moving hole.

[0013] In some of these embodiments, the rocking member is rotatably connected to the transmission member through a third rotating shaft. The distance between the third rotating shaft and the first rotating shaft is denoted as L1, and the distance between the second rotating shaft and the first rotating shaft is denoted as L2. Among them, L2 > L1.

[0014] In some of these embodiments, a guiding hole is provided on the fixed seat. The guiding hole extends along the axis direction, and the transmission member is movably inserted through the guiding hole.

[0015] A roller brush device, the roller brush device includes: a roller brush with an opening provided on its surface; a cutting mechanism as described in any one of the above, the cutting mechanism is provided inside the roller brush for cutting the winding at the opening; a driver for driving both the roller brush and the cutting assembly to rotate around the axis.

[0016] The above-mentioned roller brush device adopts the above-mentioned cutting mechanism. When cleaning entanglements, it drives the cutting assembly as a whole to rotate around the axis, so that the transmission structure moves on the guide surface. Since the guide surface has a raised portion and a recessed portion, the transmission structure will pass through the raised portion and the recessed portion in sequence during the movement, so that the transmission structure will show ups and downs in the axial direction. In this way, the first cutting member or the second cutting member can be driven to fluctuate in the axial direction, so that the first cutting member and the second cutting member are relatively dislocated back and forth, thereby achieving effective cutting. In addition, since the part where the transmission structure abuts the guide surface is a circular arc surface, the contact is relatively smooth during the transmission process, which effectively reduces the friction of the relative motion, reduces the movement noise during the transmission process, and improves the life and reliability of the mechanism.

[0017] In some embodiments, the roller brush device further includes a guide member, which is spirally disposed on the surface of the roller brush around the axis, and one end of which extends to the opening, for guiding the winding object to the opening.

[0018] In some embodiments, the roller brush device further includes a guide member, which is located in the opening and is provided on at least one side of the cutting assembly along the direction around the axis, and the guide member extends along the direction around the axis.

[0019] A cleaning device comprises the roller brush device described in any one of the above items.

[0020] The above-mentioned cleaning equipment adopts the above-mentioned cutting mechanism. When cleaning entanglements, it drives the cutting assembly as a whole to rotate around the axis, so that the transmission structure moves on the guide surface. Since the guide surface has a raised portion and a recessed portion, the transmission structure will pass through the raised portion and the recessed portion in sequence during the movement, so that the transmission structure will show ups and downs in the axial direction. In this way, the first cutting member or the second cutting member can be driven to fluctuate in the axial direction, so that the first cutting member and the second cutting member are relatively dislocated back and forth, thereby achieving effective cutting. In addition, since the part where the transmission structure abuts the guide surface is a circular arc surface, the contact is relatively smooth during the transmission process, which effectively reduces the friction of the relative motion, reduces the movement noise during the transmission process, and improves the life and reliability of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the cutting mechanism structure described in some embodiments of the present application.

[0022] Figure 2 This is a schematic diagram of the cooperation between the transmission structure and the support described in some embodiments of the present application.

[0023] Figure 3This is a structural schematic diagram of the cutting assembly described in some embodiments of the present application when it moves to a certain state.

[0024] Figure 4 This is a structural schematic diagram of the cutting assembly described in some embodiments of the present application when it moves to another state.

[0025] Figure 5 This is a schematic structural diagram of the roller brush device described in some embodiments of the present application.

[0026] Figure 6 for Figure 5 A structural cross-sectional view of the roller brush device shown in FIG.

[0027] Figure 7 for Figure 5 Enlarged schematic diagram of the structure at point A in the middle circle.

[0028] 100. Roller brush device; 10. Cutting mechanism; 1. Support; 11. Axis; 12. Guide surface; 121. Protrusion; 122. Recess; 2. Cutting assembly; 21. First cutting member; 22. Second cutting member; 2a. Cutting protrusion; 2b. Second movable hole; 23. Transmission structure; 231. Transmission member; 23a. Rod body; 23b. Mounting portion; 232. Slot; 233. Ball; 234. Elastic member; 235. Fixed seat; 23c. First rotating shaft; 23d. Second rotating shaft; 23e. Third rotating shaft; 236. Rocking member; 23f. First movable hole; 23g. Guide hole; 20. Roller brush; 201. Opening; 202. Mounting slot; 30. Driver; 31. Output shaft; 40. Guide member; 50. Draining member; 51. Draining gap. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0031] In addition, if terms such as "first" and "second" appear, these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0032] In the present application, unless otherwise clearly specified and limited, if terms such as "mounted", "connected", "connected to", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0035] In some embodiments, please refer to Figure 1 The present application provides a cutting mechanism 10, which includes: a support 1 and a cutting assembly 2. The support 1 has an axis 11 and a guide surface 12 around the outer periphery of the axis 11, and the guide surface 12 includes a protrusion 121 and a recessed portion 122 distributed along the direction around the axis 11. The cutting assembly 2 includes a transmission structure 23 and a first cutting member 21 and a second cutting member 22 that cooperate with each other. The transmission structure 23 is connected to the first cutting member 21 or the second cutting member 22 and abuts against the guide surface 12, and the portion of the transmission structure 23 that contacts the guide surface 12 is an arc-shaped surface. When the cutting assembly 2 rotates around the axis 11, the transmission structure 23 passes through the protrusion 121 and the recessed portion 122 in sequence, so that the first cutting member 21 and the second cutting member 22 move in an offset manner in the direction of the axis 11.

[0036] When cleaning entangled objects, the above-mentioned cutting mechanism 10 drives the cutting assembly 2 to rotate as a whole around the axis 11, causing the transmission structure 23 to move on the guide surface 12. Since the guide surface 12 has a raised portion 121 and a recessed portion 122, the transmission structure 23 will pass through the raised portion 121 and the recessed portion 122 in sequence during the movement, causing the transmission structure 23 to fluctuate in the direction of the axis 11. This can drive the first cutting member 21 or the second cutting member 22 to fluctuate in the direction of the axis 11, causing the first cutting member 21 and the second cutting member 22 to be relatively reciprocatingly misaligned, thereby achieving effective cutting. In addition, since the portion where the transmission structure 23 contacts the guide surface 12 is a circular arc surface, the contact is relatively smooth during the transmission process, effectively reducing the friction of the relative motion, reducing the movement noise during the transmission process, and improving the life and reliability of the mechanism.

[0037] It should be noted that the guide surface 12 has a raised portion 121 and a recessed portion 122 around the outer circumference of the axis 11. In this way, when the transmission structure 23 moves on the guide surface 12, it will pass through the raised portion 121 and the recessed portion 122 in sequence, causing the transmission structure 23 to sometimes be high and sometimes low in the direction of the axis 11. The raised portion 121 refers to the portion of the guide surface 12 that protrudes outward along the direction of the axis 11, and the recessed portion 122 refers to the portion of the guide surface 12 that is recessed inward along the direction of the axis 11. In order to make the transmission structure 23 move more smoothly on the guide surface 12, the raised portion 121 and the recessed portion 122 can be designed as an arc-shaped structure. For example, the raised portion 121 can be an arc-shaped convex surface, and the recessed portion 122 can be an arc-shaped concave surface. Specifically, in some embodiments, the guide surface 12 can be a sinusoidal surface.

[0038] Meanwhile, the number of the protrusion 121 and the recessed portion 122 can be one or more. When the number of both the protrusion 121 and the recessed portion 122 is more than one, the protrusion 121 and the recessed portion 122 are alternately distributed on the guide surface 12 around the circumference of the axis 11, and the protrusion 121 and the recessed portion 122 are connected by a smooth transition.

[0039] It should also be noted that the portion of the transmission structure 23 that contacts the guide surface 12 is an arcuate surface, which reduces the frictional contact surface with the guide surface 12 and reduces wear on the transmission structure 23 as it moves on the guide surface 12. There are various ways to implement the arcuate surface, such as designing the portion of the transmission structure 23 that contacts the guide surface 12 as a spherical structure, and applying lubricating oil between the transmission structure 23 and the guide surface 12; or providing a structure such as a roller or ball 233 on the transmission structure 23 to replace the sliding friction between the transmission structure 23 and the guide surface 12 with rolling friction.

[0040] Furthermore, when the cutting mechanism 10 is used in the roller brush device 100, the cutting assembly 2 can rotate along with the roller brush 20 about the axis 11, but the support 1 does not. This allows the transmission structure 23 in the cutting assembly 2 to move along the guide surface 12 about the axis 11, causing the transmission structure 23 to rise and fall, driving the first cutting member 21 and the second cutting member 22 to undergo offset motion. The offset motion between the first cutting member 21 and the second cutting member 22 should be understood as relative motion between the first cutting member 21 and the second cutting member 22, enabling the winding material to be cut. To improve the cutting effect, each of the first and second cutting members 21 and 22 is provided with a plurality of spaced-apart cutting protrusions 2a. During this offset motion, the cutting protrusions 2a of the first cutting member 21 and the cutting protrusions 2a of the second cutting member 22 can move from an overlapping state to a mutually offset state, or alternatively, from a mutually offset state to an overlapping state.

[0041] For further information, please refer to Figure 2 The transmission structure 23 includes a transmission member 231 and a ball bearing 233. The transmission member 231 is in transmission connection with the first cutting member 21 or the second cutting member 22. The ball bearing 233 rolls on the transmission member 231 and abuts against the guide surface 12. As can be seen, the abutment of the ball bearing 233 against the guide surface 12 not only helps reduce the frictional contact area with the guide surface 12, but also replaces sliding friction with rolling friction, effectively reducing wear during the transmission process, extending the service life of the mechanism, and improving cutting reliability.

[0042] It should be noted that the abutment of the ball bearings 233 against the guide surface 12 ensures that the ball bearings 233 can pass through the raised portion 121 and the recessed portion 122 in sequence. This prevents the transmission structure 23 from separating from the guide surface 12 during ups and downs, resulting in transmission failure. To achieve effective abutment, an elastic component can be provided on the transmission member 231 to elastically abut the ball bearings 233 against the guide surface 12; a counterweight structure can also be provided on the transmission member 231, and the counterweight structure can be suspended from the support 1 via a traction rope and a fixed pulley structure, so that the counterweight structure exerts a pulling force on the transmission member 231 toward the support 1; alternatively, a guide rail surface approximately parallel to the guide surface 12 can be provided above the guide surface 12, so that the ball bearings 233 are confined between the guide rail surface and the guide surface 12.

[0043] It should also be noted that the transmission connection between the transmission member 231 and the first cutting member 21 or the second cutting member 22 should be understood as follows: the ups and downs of the transmission member 231 on the guide surface 12 can be transmitted to the first cutting member 21 or the second cutting member 22, causing the first cutting member 21 and the second cutting member 22 to move out of alignment. The connection between the transmission member 231 and the first cutting member 21 or the second cutting member 22 can be hinged via a connecting rod or directly connected via bolts, pins, etc.

[0044] In some embodiments, please refer to Figure 2 A slot 232 is provided at one end of the transmission member 231, and the ball 233 is rollably embedded in the slot 232 and at least partially protrudes out of the slot 232. In this way, the provision of the slot 232 facilitates the installation of the ball 233 and also facilitates the smooth movement of the transmission structure 23 on the guide surface 12.

[0045] It should be noted that, in order to prevent the ball 233 from falling out of the slot 232 , the slot 232 can be designed as a hand-mouth structure, for example, the slot size of the slot 232 is smaller than the diameter of the ball 233 .

[0046] To facilitate the installation of the ball bearing 233 and the transmission of the first cutting member 21 or the second cutting member 22, the transmission member 231 can include a rod portion 23a and a mounting portion 23b provided at one end of the rod portion 23a. The rod portion 23a is in transmission connection with the first cutting member 21 or the second cutting member 22, and the engaging groove 232 is defined in the mounting portion 23b. At the same time, to ensure more efficient transmission, the length direction of the rod portion 23a can be aligned with the direction of the axis 11.

[0047] In some embodiments, please refer to Figure 3 The transmission structure 23 further includes an elastic member 234, which is used to elastically contact the ball 233 against the guide surface 12 through the transmission member 231. In this way, the elastic member 234 allows the ball 233 to stably contact the guide surface 12, thereby allowing the transmission structure 23 to stably move on the guide surface 12 to achieve stable transmission.

[0048] It should be noted that there are various arrangements of the elastic member 234 on the transmission structure 23, as long as it can press the ball 233 against the guide surface 12, for example: one end of the elastic member 234 is connected to the transmission member 231, and the other end is connected to a relatively fixed structure in the transmission structure 23, such as the second cutting member 22 or the fixed seat 235 of the transmission structure 23; or, one end of the elastic member 234 is connected to the transmission member 231, and the other end is connected to a structure outside the cutting mechanism 10, such as: connected to the roller brush 20, etc.

[0049] The elastic member 234 may be, but is not limited to, a spring, an elastic metal sheet, an elastic rubber block, etc.

[0050] Specifically, the elastic member 234 is a spring that is sleeved on the transmission member 231, with one end thereof abutting against the transmission member 231 and the other end being used to abut against the inside of the roller brush 20. This design allows the transmission member 231 to tightly abut against the guide surface 12 through the ball bearing 233, making the transmission of the first cutting member 21 or the second cutting member 22 more efficient and reliable.

[0051] In some embodiments, please refer to Figure 3 The transmission structure 23 further includes a rocking member 236 and a fixed seat 235. The rocking member 236 is rotatably connected to the fixed seat 235, and its two ends are respectively rotatably connected to the transmission member 231 and the first cutting member 21 or the second cutting member 22. Therefore, it can be seen that the first cutting member 21 or the second cutting member 22 and the transmission member 231 are transmitted through the rocking member 236. When the transmission member 231 rises and falls on the guide surface 12, the rocking member 236 rotates on the fixed seat 235, driving the first cutting member 21 or the second cutting member 22 to reciprocate in the direction of the axis 11, thereby achieving the offset movement between the first cutting member 21 and the second cutting member 22.

[0052] For the sake of clear understanding, take Figure 3 and Figure 4 as an example for illustration. As Figure 3 shown, when the transmission member 231 moves to the recessed portion 122, the transmission member 231 moves relatively to the Figure 3 right in the figure, driving the rocking member 236 to rotate counterclockwise, causing the first cutting member 21 to move Figure 3 left in the figure. Please refer to Figure 4 , when the transmission member 231 moves to the protruding portion 121, the transmission member 231 moves relatively to the Figure 4 left in the figure, driving the rocking member 236 to rotate clockwise, causing the first cutting member 21 to move Figure 4 right in the figure.

[0053] Furthermore, please refer to Figure 3 , a first rotating shaft 23c is provided on the fixed seat 235, a second rotating shaft 23d is provided on the rocking member 236, a first moving hole 23f extending along the length direction of the rocking member 236 is provided on the rocking member 236, a second moving hole 2b extending along a direction intersecting with the axis 11 direction is provided on the first cutting member 21 or the second cutting member 22, the first rotating shaft 23c is movably inserted into the first moving hole 23f, and the second rotating shaft 23d is movably inserted into the second moving hole 2b. It can be seen from this that through the cooperation of the first rotating shaft 23c and the first moving hole 23f, and the cooperation of the second rotating shaft 23d and the second moving hole 2b, the rotation of the rocking member 236 on the fixing member and the first cutting member 21 has a certain amount of movement, avoiding jamming during the process of driving the rocking member 236 to rotate, and ensuring the reliability of cutting.

[0054] It should be noted that the first moving hole 23f extends along the length direction of the rocking member 236, indicating that in addition to being able to rotate around the first rotating shaft 23c, the rocking member 236 also allows the first rotating shaft 23c to move along the length direction of the rocking member 236 in the first moving hole 23f, providing a certain amount of movement space for the transmission member 231 to drive the rocking member 236.

[0055] Similarly, the second moving hole 2b extends along a direction intersecting with the axis 11 direction, which means that during the transmission process, the rocking member 236 moves in a direction intersecting with the axis 11 direction, avoiding the rocking member 236 from abutting against the first cutting member 21 or the second cutting member 22 during rotation and causing unstable cutting.

[0056] Specifically in some embodiments, both the first moving hole 23f and the second moving hole 2b are waist-shaped holes.

[0057] In some embodiments, please refer to Figure 4, the rocking member 236 is rotatably connected to the transmission member 231 through the third rotating shaft 23e. The distance between the third rotating shaft 23e and the first rotating shaft 23c is denoted as L1, and the distance between the second rotating shaft 23d and the first rotating shaft 23c is denoted as L2, where L2 > L1. It can be seen from this that when the rocking member 236 rotates, the swing amplitude near the transmission member 231 is smaller than the swing amplitude near the first cutting member 21 or the second cutting member 22. In this way, the stroke of the first cutting member 21 or the second cutting member 22 can be amplified, improving the cutting effect. At the same time, amplifying the stroke of the first cutting member 21 or the second cutting member 22 can reduce the undulation height difference of the guiding surface 12. In this way, a large reciprocating movement stroke of the moving knife can be achieved through a small height undulation, which can further reduce the noise and friction of the power source mechanism and improve the reliability of the power source mechanism. In addition, after the stroke of the first cutting member 21 or the second cutting member 22 is amplified, the relative movement distance between the first cutting member 21 and the second cutting member 22 increases, and the relative movement speed also increases, enhancing the shearing effect on the hair.

[0058] In some embodiments, please refer to Figure 3 , a guiding hole 23g is provided on the fixed seat 235. The guiding hole 23g extends along the axis 11 direction, and the transmission member 231 is movably inserted into the guiding hole 23g. In this way, the height undulation of the transmission member 231 in the axis 11 direction is more stable, improving the reliability of cutting.

[0059] In some embodiments, please refer to Figure 5 and Figure 6 , the present application provides a roller brush device 100. The roller brush device 100 includes: a driver 30, a roller brush 20, and the cutting mechanism 10 in any one of the above embodiments. An opening 201 is provided on the surface of the roller brush 20, and the cutting mechanism 10 is arranged inside the roller brush 20 for cutting the winding at the opening 201; the driver 30 is used to drive the roller brush 20 and the cutting assembly 2 to rotate around the axis 11.

[0060] The above-mentioned rotary brush device 100 adopts the above-mentioned cutting mechanism 10. When cleaning the winding, it drives the whole cutting assembly 2 to rotate around the axis 11, so that the transmission structure 23 moves on the guide surface 12. Since the guide surface 12 has the convex part 121 and the concave part 122, during the movement of the transmission structure 23, it will successively pass through the convex part 121 and the concave part 122, making the transmission structure 23 undulate in the direction of the axis 11. This can drive the first cutting member 21 or the second cutting member 22 to undulate in the direction of the axis 11, causing relative reciprocating dislocation between the first cutting member 21 and the second cutting member 22, so as to achieve effective cutting. Also, since the part of the transmission structure 23 in contact with the guide surface 12 is an arc surface, the contact during the transmission process is relatively smooth, effectively reducing the friction of the relative movement, reducing the movement noise during the transmission process, and improving the service life and reliability of the mechanism.

[0061] It should be noted that when the cutting mechanism 10 is installed inside the rotary brush 20, its cutting assembly 2 should be exposed in the opening 201, so that the first cutting member 21 and the second cutting member 22 can cut the winding at the opening 201. At the same time, both the cutting assembly 2 and the rotary brush 20 can rotate around the axis 11, which means that the axis 11 of the support 1 should be collinear with the axis of the rotary brush 20.

[0062] To facilitate the stable installation of the cutting mechanism 10 on the rotary brush 20, an installation groove 202 can be provided inside the rotary brush 20, and the installation groove 202 is kept in communication with the opening 201. When the cutting assembly 2 is fixed in the installation groove 202, at least part of the first cutting member 21 and the second cutting member 22 extends into the opening 201. In addition, when the transmission structure 23 in the cutting assembly 2 includes an elastic member 234 and a transmission member 231, one end of the elastic member 234 abuts against the groove wall of the installation groove 202, and the other end abuts against the transmission member 231. It should be noted that when the cutting assembly 2 is fixed in the installation groove 202, the support 1 is located inside the rotary brush 20 but does not rotate with the rotary brush 20, for example: the support 1 is inserted from one end of the rotary brush 20, etc.

[0063] In addition, the driver 30 can be a motor or a combined structure of a motor and a transmission mechanism, such as: a motor and a gear, etc. The driver 30 can include an output shaft 31. The driver 30 is located inside the support 1, and the output shaft 31 extends out of the support 1 and is connected to the inside of the rotary brush 20. At this time, the axis of the output shaft 31 is collinear or substantially collinear with the axis 11 of the support 1.

[0064] Furthermore, please refer to Figure 5, the roller brush device 100 further includes a guide member 40. The guide member 40 is spirally provided on the surface of the roller brush 20 around the axis 11, and one end thereof extends to the opening 201 for guiding the winding object to the opening 201. It can be seen that the guide member 40 protrudes from the surface of the roller brush 20 and extends spirally around the axis 11. Therefore, when the winding object winds around the roller brush 20, during the rotation of the roller brush 20, the winding object will gather towards the opening 201 under the guidance of the guide member 40. Since there is a cutting assembly 2 at the opening 201, the winding object transferred to the opening 201 will be cut off by the cutting assembly 2, so that the winding object cannot wind around the roller brush 20. In this way, by using the structure of the roller brush 20 of the present application, the problem that the roller brush 20 is easily wound with winding objects such as hair and thin strings can be solved to a certain extent, the cleaning performance of the product can be improved, and thus the user experience can be improved.

[0065] It should be noted that the guide member 40 is spirally arranged on the roller brush 20, and during the rotation of the spiral, it will have a certain transmission ability, so that the winding object can gather towards the opening 201. As for the spiral direction of the guide member 40, it can be determined according to the rotation direction of the roller brush 20, so that the guide member 40 shows a screwing-in trend when rotating with the roller brush 20. Of course, the arrangement of the guide member 40 can also refer to the design of the Archimedes curve, so that the winding object has a better lifting effect under the guidance of the guide member 40, driving the winding object to gather at the opening 201.

[0066] At the same time, the height of the protrusion of the guide member 40 on the roller brush 20 should not be too low. If it is too low, the ability to gather the winding object is poor; of course, it should not be too high either, otherwise it will affect the cleaning ability of the surface of the roller brush 20.

[0067] It should also be noted that the number of the openings 201 can be one or more. When the number of the openings 201 is more than one, all the openings 201 can be distributed at intervals around the axis 11. At the same time, at least one cutting assembly 2 can be configured in each opening 201, so that the winding object in the same circle can be circumferentially cut, making the winding object cut more finely.

[0068] In addition, to enhance the gathering effect of the winding object, the suction port of the air duct of the cleaning robot can be aligned with the position where the opening 201 is located. In this way, while sucking dirt, negative pressure can also be provided at the opening 201, making the winding object easier to gather at the opening 201 under the action of suction.

[0069] Furthermore, please refer to Figure 5At least one guide member 40 is provided on opposite sides of the opening 201 along the axis 11. These guide members 40 are used to guide the tangled material toward the opening 201. As can be seen, the opening 201 is located relatively centrally on the roller brush 20, allowing the tangled material on either side to converge toward the center. This helps shorten the convergence distance and improve tangled material cleaning efficiency. Furthermore, the presence of guide members 40 on both sides increases the convergence range and enhances tangled material cleaning effectiveness.

[0070] It is known that the guide members 40 on both sides can gather the windings toward the opening 201 , which means that the spiral directions of the guide members 40 on both sides are designed in opposite directions, for example, the guide member 40 on one side is designed to be left-handed, and the guide member 40 on the other side is designed to be right-handed.

[0071] There may be one or more guide members 40 on either side of the opening 201 along the axis 11. When there are more than one guide member 40, the spiral directions of the guide members 40 on one side should remain consistent.

[0072] In some embodiments, please refer to Figure 5 and Figure 7 The roller brush device 100 further includes a guiding member 50, which is located within the opening 201 and is provided on at least one side of the cutting assembly 2 along the direction around the axis 11. The guiding member 50 extends along the direction around the axis 11. Therefore, it can be seen that the purpose of providing the guiding member 50 on one side of the cutting assembly 2 is to guide the entangled material at the opening 201 to a state around the axis 11, thereby preventing the entangled material from being distributed along the axis 11 and failing to achieve effective cutting.

[0073] It should be noted that the guiding member 50 is a structure protruding from one side of the cutting assembly 2 and extending in a direction around the axis 11, so that the entangled material at the opening 201 can be guided to a state surrounding the axis 11. The guiding member 50 can be provided on one side of the cutting assembly 2 or on two opposite sides of the cutting assembly 2.

[0074] Meanwhile, the number of the guide members 50 on one side of the cutting assembly 2 can be one or more. When there are more than one guide member 50, the guide members 50 are spaced apart along the axis 11, and a guide gap 51 is formed between two adjacent guide members 50. This allows the winding material to be guided into the guide gap 51, so that the cutting assembly 2 can effectively cut the material.

[0075] In addition, the height of the projection of the guide member 50 can be designed to be a uniform structure or a structure with varying heights. For example, the farther away from the cutting assembly 2 the projection of the guide member 50 is, the lower it is.

[0076] In some embodiments, the present application provides a cleaning device, and the cleaning device includes the roller brush device 100 of any one of the above.

[0077] For the above cleaning device, by using the above cutting mechanism 10, when cleaning the entanglement, the cutting assembly 2 is driven to rotate integrally around the axis 11, so that the transmission structure 23 moves on the guide surface 12. Since the guide surface 12 has the convex portion 121 and the concave portion 122, during the movement of the transmission structure 23, it will successively pass through the convex portion 121 and the concave portion 122, so that the transmission structure 23 presents undulations in the direction of the axis 11. This can drive the first cutting member 21 or the second cutting member 22 to undulate in the direction of the axis 11, so that a relative reciprocating dislocation occurs between the first cutting member 21 and the second cutting member 22, thereby realizing effective cutting. Also, since the portion of the transmission structure 23 in contact with the guide surface 12 is an arc surface, the contact is relatively smooth during the transmission process, effectively reducing the friction of the relative movement, reducing the movement noise during the transmission process, and improving the service life and reliability of the mechanism.

[0078] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0079] The above embodiments only represent several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A cutting mechanism, characterized in that, The cutting mechanism includes: A support (1) having an axis (11) and a guiding surface (12) around the outer periphery of the axis (11), the guiding surface (12) including convex portions (121) and concave portions (122) distributed in a direction around the axis (11); A cutting assembly (2) including a transmission structure (23) and a first cutting member (21) and a second cutting member (22) that cooperate with each other, the transmission structure (23) being connected to the first cutting member (21) or the second cutting member (22) and abutting against the guiding surface (12), and the portion of the transmission structure (23) in contact with the guiding surface (12) being an arc surface; Wherein, when the cutting assembly (2) rotates around the axis (11), the transmission structure (23) sequentially passes through the convex portion (121) and the concave portion (122), so that the first cutting member (21) and the second cutting member (22) are displaced in the direction of the axis (11); The transmission structure (23) includes a transmission member (231) and a ball (233), the transmission member (231) being in transmission connection with the first cutting member (21) or the second cutting member (22), the ball (233) rolling on the transmission member (231) and abutting against the guiding surface (12); the transmission structure (23) further includes a rocking member (236) and a fixed seat (235), the rocking member (236) being rotatably connected to the fixed seat (235), and its two ends being respectively rotatably connected to the transmission member (231) and the first cutting member (21) or the second cutting member (22); a first rotating shaft (23c) is provided on the fixed seat (235), a second rotating shaft (23d) is provided on the rocking member (236), a first moving hole (23f) extending along the length direction of the rocking member (236) is provided on the rocking member (236), a second moving hole (2b) extending in a direction intersecting with the direction of the axis (11) is provided on the first cutting member (21) or the second cutting member (22), the first rotating shaft (23c) is movably inserted into the first moving hole (23f), and the second rotating shaft (23d) is movably inserted into the second moving hole (2b).

2. The cutting mechanism according to claim 1, wherein, A slot (232) is provided at one end of the transmission member (231), and the ball (233) is rollingly embedded in the slot (232) and at least partially protrudes outside the slot (232).

3. The cutting mechanism according to claim 1, wherein, The transmission structure (23) further includes an elastic member (234), and the elastic member (234) is used to elastically abut the ball (233) against the guiding surface (12) through the transmission member (231).

4. The cutting mechanism according to claim 3, characterized in that, The elastic member (234) is a spring, the spring is sleeved on the transmission member (231), one end of which abuts against the transmission member (231), and the other end is used to abut against the inside of the rotary brush (20).

5. The cutting mechanism according to claim 1, wherein The rocking member (236) is rotationally connected to the transmission member (231) through a third rotating shaft (23e). The distance between the third rotating shaft (23e) and the first rotating shaft (23c) is denoted as L1, and the distance between the second rotating shaft (23d) and the first rotating shaft (23c) is denoted as L2, where L2 > L1.

6. The cutting mechanism according to claim 1, characterized in that, A guide hole (23g) is provided on the fixed seat (235). The guide hole (23g) extends along the direction of the axis (11), and the transmission member (231) is movably inserted into the guide hole (23g).

7. A roller brush device, characterized in that, The roller brush device includes: A roller brush (20) with an opening (201) on its surface; The cutting mechanism according to any one of claims 1-6, the cutting mechanism is arranged inside the roller brush (20) for cutting the winding at the opening (201); A driver (30) for driving both the roller brush (20) and the cutting assembly (2) to rotate around the axis (11).

8. The roller brush device according to claim 7, wherein, The roller brush device further includes a guide member (40). The guide member (40) is spirally arranged on the surface of the roller brush (20) around the axis (11), and one end of it extends to the opening (201) for guiding the winding to the opening (201).

9. The roller brush device according to claim 7, wherein, The roller brush device further includes a dredging member (50). The dredging member (50) is located inside the opening (201) and is arranged on at least one side of the cutting assembly (2) along the direction around the axis (11). The dredging member (50) extends along the direction around the axis (11).

10. A cleaning device, characterized in that, The cleaning device includes the roller brush device according to any one of claims 7-9.

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