Crawler-type surface cleaning device

Abstract

The crawler-type surface cleaning device comprises a ground brush provided with a crawler assembly and a driving motor, the crawler assembly comprises a support, a driving roller, a driven roller and an annular cleaning part, the support comprises a side plate and a supporting part, the crawler assembly and the ground brush are detachably installed through the side plate, and the driving roller comprises a driving section and a transmission section; the joint of the driving section and the transmission section is rotationally connected through a supporting part, the driving motor is in transmission connection with the driving section, at least part of the suspended end of the driving section is hollow, the driving motor extends into the driving section from the suspended end, a supporting wheel is further arranged on the support, and a groove is formed in the periphery of the driving section; the supporting wheel is matched with the groove so as to support the suspended end when the annular cleaning piece operates. When the driving section tends to deform towards the driven roller under the action of extrusion force of the annular cleaning part, the driving section can be limited to the original position under the limiting action of the supporting wheels and the supporting grooves, the probability of displacement deformation of the driving section is reduced, and the working stability of the driving section can be improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cleaning equipment, and particularly relates to a tracked surface cleaning device. BACKGROUND

[0002] The current surface cleaning device usually has a floor brush with a cleaning assembly. The floor brush moves on the surface to be cleaned, and the cleaning assembly wipes the surface to be cleaned to achieve the cleaning purpose. In order to increase the cleaning area of the cleaning assembly, the existing cleaning assembly is usually composed of two parallel and spaced driving rollers, driven rollers, and an annular cleaning piece sleeved outside the driving rollers and the driven rollers. The driving rollers rotate to drive the annular cleaning piece and the driven rollers to rotate, and wipe the surface to be cleaned to adsorb the dirt on the surface to be cleaned to the annular cleaning piece, and then suck the dirt into the sewage tank of the surface cleaning device through the dirt suction port. In addition, in order to facilitate the user to disassemble and clean or replace the annular cleaning piece, the cleaning assembly further comprises a side plate which is detachably connected with the floor brush shell, and the driving rollers and the driven rollers are respectively rotatably connected with the side plate. In this way, the side plate can be disassembled from the floor brush shell, and then the annular cleaning piece can be cleaned or replaced, thereby reducing the difficulty of cleaning and maintenance of the cleaning assembly for the user.

[0003] However, the above technical solution has the following problems: Since the annular cleaning piece needs to be sleeved on the driving rollers and the driven rollers, and in order to ensure the cleaning effect of the annular cleaning piece, the annular cleaning piece needs to be kept a certain degree of tension, so a certain degree of extrusion force will be applied to the driving section and the driven rollers inside the annular cleaning piece. The driving roller rotatably connected with the side plate will not be deformed obviously, but the end of the driving roller away from the side plate will be deformed inward under the extrusion of the annular cleaning piece because it is in a cantilever state and is far away from the support point of the side plate. This makes the area of the annular cleaning piece corresponding to the side of the driving roller away from the side plate not be effectively tensioned, which affects the cleaning effect of the cleaning assembly, and the service life of the driving roller will be reduced under the long-term deformation state. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a tracked surface cleaning device to solve the technical problem that the end of the driving roller away from the side plate in the cleaning assembly of the conventional surface cleaning device is easily deformed under the extrusion of the annular cleaning piece, thereby reducing the cleaning ability of the annular cleaning piece and the service life of the driving roller.

[0005] The technical solution adopted by the present application is as follows:

[0006] A crawler-type surface cleaning device comprises a floor brush having a crawler assembly and a driving motor, the crawler assembly comprises a bracket, a driving roller, a driven roller and an annular cleaning member, the bracket comprises a side plate and a support part, the crawler assembly is detachably mounted with the floor brush through the side plate, the driving roller comprises a driving section and a transmission section, the driving section and the transmission section are rotationally connected through the support part, the driving motor is in transmission connection with the driving section, the driving section is at least partially hollow at a free end, the driving motor extends into the driving section from the free end, the bracket is further provided with a support wheel, the driving section is provided with a groove in the outer periphery, and the support wheel is matched with the groove to support the free end when the annular cleaning member is running.

[0007] The crawler-type surface cleaning device described in the present application further comprises the following additional technical features:

[0008] The inner surface of the annular cleaning member is provided with a protrusion matched with the groove.

[0009] The driving motor is rotationally connected with the bracket through a pivot shaft, and the projection of the support wheel towards the driving section falls between the pivot shaft and the support part.

[0010] The driving motor comprises a first output end and a second output end, the first output end is in transmission connection with the driving section, and the second output end is in transmission connection with the transmission section.

[0011] The support wheel comprises an upper support wheel and a lower support wheel located on both sides of the plane where the center axes of the driving roller and the driven roller are located, the line connecting the upper support wheel and the center axis of the driving roller and the line connecting the lower support wheel and the center axis of the driving roller are α, 20°≤α≤50°.

[0012] The distance between the upper support wheel and the plane where the center axes of the driving roller and the driven roller are located is L1, the distance between the lower support wheel and the plane where the center axes of the driving roller and the driven roller are located is L2, and L1

[0013] The axial length of the driving section is greater than the axial length of the transmission section, and / or the hole diameter of the driving roller is greater than the hole diameter of the driven roller.

[0014] The bracket is provided with a support frame for mounting the support wheel; the bracket is provided with a plurality of mounting positions along the length direction of the driving section, and the support frame is movably connected with the bracket and can be fixed to any mounting position.

[0015] The support frame comprises two pairs of support rods arranged between two frame bodies, the support wheel is sleeved on the support rod, and the length of the support rod is greater than the width of the support wheel so that the support wheel can move along the length direction of the support rod.

[0016] Further comprising an adjusting mechanism arranged between the support frame and the support frame, the adjusting mechanism can adjust the distance between the support frame and the support frame to drive the support wheel close to or away from the driving roller.

[0017] Due to the adoption of the above technical scheme, the application has the following beneficial effects:

[0018] 1. The track-type surface cleaning device of the application comprises a driving roller, a driven roller and an annular cleaning member sleeved outside the driving roller and the driven roller. The driving roller is driven to rotate by a driving motor, and the annular cleaning member is driven to rotate to realize wiping and cleaning of the surface to be cleaned. The driven roller serves to support the annular cleaning member and assist in rotation. The driving roller comprises a driving section and a transmission section, and the driving section and the transmission section are rotationally connected through a support part. In this way, the support part and the side plate cooperate to realize two-point support of the transmission section, thereby enhancing the installation stability of the transmission section and making it less likely to deform inwardly under the extrusion of the annular cleaning member. In addition, the provision of the support part shortens the cantilever length of the driving section, reduces the deformation amount of the driving section under the extrusion of the annular cleaning member, and to some extent, improves the support stability of the driving section. On this basis, the driving motor is inserted into the driving section from the free end thereof, which can occupy less space on the side of the track assembly, so that the annular cleaning member can cover the track assembly in the width direction to a greater extent, thereby better covering and cleaning the surface to be cleaned at some corner positions, and helping to improve the cleaning effect of the surface cleaning device.

[0019] Furthermore, the driving section is provided with a groove on the outer periphery, and the support frame is provided with a support wheel. When the driving section tends to deform towards the driven roller under the extrusion force of the annular cleaning member, it will be limited in place under the limiting action of the support wheel and the support groove, thereby reducing the probability of displacement deformation of the driving section and helping to improve the working stability of the driving section, thereby improving the working stability of the driving roller. Moreover, since the cleaning ability of the annular cleaning member is related to the tightness of its outer surface, the annular cleaning member can be arranged to have a tight outer surface without worrying about the deformation of the driving roller, which helps to improve the cleaning effect of the annular cleaning member.

[0020] 2. As a preferred embodiment of the present application, the inner surface of the annular cleaning member is provided with protrusions matched with grooves, which can improve the friction between the annular cleaning member and the driving roller. During the rotation of the driving roller, the driving roller can easily drive the annular cleaning member to rotate synchronously due to the friction between the protrusions and the grooves, which improves the synchronous rotation rate of the annular cleaning member under the driving of the driving roller, and helps to improve the wiping effect on the surface to be cleaned. In addition, the setting of the grooves and the protrusions also has a positioning effect on the assembly of the annular cleaning member. When the annular cleaning member is sleeved, only the protrusions need to be placed in the grooves to determine the sleeving position of the annular cleaning member, which helps to improve the assembly efficiency of the annular cleaning member.

[0021] 3. As a preferred embodiment of the present application, the driving motor is rotatably connected to the support through the pivot shaft. When the cleaning work is finished and the track assembly needs to be cleaned, especially when the dirt suction port is cleaned, the driving motor can be rotated in other directions to avoid the driving motor from the dirt suction port, so as to facilitate the user to clean the hair, sewage and other dirt near the dirt suction port which is not sucked. In addition, when the driving motor is repaired and replaced, the driving motor can also be rotated to a position convenient for operation for repair and maintenance, which optimizes the user's experience in multiple directions. On this basis, the projection of the supporting wheel towards the driving section falls between the pivot shaft and the supporting part, so that the outer surface of the driving section abuts against the supporting wheel, and the inner surface abuts against the main body of the driving motor. When the supporting wheel applies a force to the driving section, the driving section inside can be supported by the driving motor, which can prevent the driving section from being locally deformed under the abutting action of the supporting wheel.

[0022] 4. As a preferred embodiment of the present application, the driving motor includes a first output end and a second output end, and the first output end and the second output end are respectively in transmission connection with the driving section and the transmission section. In this way, the driving section and the transmission section can rotate synchronously under the driving action of the driving motor. Compared with the mode that the transmission section is driven to rotate by the driving section, the driving section and the transmission section have a higher synchronous rotation rate under the driving action of the driving motor, which prevents the abrasion between the driving roller and the inner surface of the annular cleaning member caused by the deviation of the rotation rate of the driving section and the transmission section, helps to improve the driving efficiency of the annular cleaning member, and thus improves the cleaning effect of the track assembly. In addition, the rotation speed of the driving roller can be adjusted by adjusting the output power of the driving motor, so as to adjust the advancing speed of the track assembly, without worrying about the problem of deviation of the rotation rate of the driving section and the transmission section caused by too fast output power of the driving motor.

[0023] 5. As a preferred embodiment of the present application, the supporting wheels are divided into upper supporting wheels and lower supporting wheels and are distributed on both sides of the plane where the center axes of the driving roller and the driven roller are located, so that the supporting wheels can realize uniform support of the driving section in multiple directions and at multiple angles, and the upper supporting wheels and the lower supporting wheels can realize higher degree of support limiting of the driving section by cooperating with the grooves in the extrusion force applied from above or below to the annular cleaning member; in addition, the line connecting the upper supporting wheel and the center axis of the driving roller and the line connecting the lower supporting wheel and the center axis of the driving roller are set to 20°≤a≤50°, so that the upper supporting wheel and the lower supporting wheel can not only play a role in limiting the driving section in the horizontal direction, but also ensure the vertical limiting of the driving section, thereby enhancing the comprehensiveness of the supporting effect of the driving section.

[0024] 6. As a preferred embodiment of the present application, the axial length of the driving section is set to be greater than the axial length of the transmission section, which can improve the proportion of the space occupied by the driving roller under the driving of the driving motor, thereby helping to reduce the driving rotation pressure of the driving section on the transmission section and improve the rotation synchronization rate of the driving roller under the driving of the driving motor; and the aperture of the driving roller is set to be greater than the aperture of the driven roller, so that the driving roller can more easily drive the annular cleaning member to rotate and indirectly drive the driven roller to rotate, thereby reducing the driving rotation pressure of the driving roller on the driven roller and helping to improve the rotation effect of the annular cleaning member and thus the cleaning effect of the annular cleaning member.

[0025] 7. As a preferred embodiment of the present application, the supporting wheels are installed on the support frame through the supporting frame, and a plurality of mounting positions are provided on the support frame, so as to adjust the relative position relationship between the supporting wheels and the grooves by adjusting the position of the supporting frame; when there is a deviation in the alignment between the supporting wheels and the grooves due to manufacturing design deviation or replacement of different sizes of driving rollers with different groove positions, the supporting wheels and the grooves can be aligned by adjusting the position of the supporting frame, so that the supporting wheels can be smoothly inserted into the grooves, thereby enhancing the adaptability of the supporting wheels to different models of driving rollers. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are included to provide a further understanding of the present application, form a part of the present application and illustrate the illustrative embodiments of the present application and its description, which are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0027] Figure 1 is an exploded view of the track-type surface cleaning device in Example 1 of the present application;

[0028] Figure 2 is a sectional view of the track-type surface cleaning device in Example 1 of the present application;

[0029] Figure 3 is an enlarged view of A in Figure 2

[0030] ​Figure 4 Fig. 1 is a perspective view of a surface cleaning device according to an embodiment of the present application; Figure 2 Fig. 2 is a sectional view of the surface cleaning device according to an embodiment of the present application;

[0031] Figure 5 Fig. 3 is a schematic view of a partial structure of the surface cleaning device according to an embodiment of the present application;

[0032] Figure 6 Fig. 4 is a schematic view of a bracket according to an embodiment of the present application;

[0033] Figure 7 Fig. 5 is a sectional view of a drive section according to an embodiment of the present application; Figure 6 Fig. 6 is an enlarged view of part B of Fig. 5;

[0034] Figure 8 Fig. 7 is a schematic view of a drive section according to an embodiment of the present application;

[0035] Figure 9 Fig. 8 is a sectional view of a surface cleaning device according to an embodiment of the present application.

[0036] Wherein:

[0037] 1 drive motor, 11 output end head;

[0038] 2 bracket, 21 side plate, 211 first rotating support, 212 second rotating support, 213 plug-in protrusion, 22 support part, 221 bearing, 222 bearing holder, 23 support frame, 231 frame body, 232 support rod;

[0039] 3 driving roller, 31 drive section, 311 overhanging end, 312 cantilever section, 32 transmission section;

[0040] 4 driven roller;

[0041] 5 annular cleaning member;

[0042] 6 support wheel, 61 upper support wheel, 62 lower support wheel;

[0043] 7 groove, 71 guide slope;

[0044] 8 pivot shaft. DETAILED DESCRIPTION

[0045] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0046] In the following description, a lot of specific details are set forth in order to fully understand the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment can be combined with each other without conflict.

[0047] In addition, in the description of the present application, it needs to be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0048] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, or communication; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Embodiment 1:

[0051] As one of many surface cleaning devices, the crawler-type surface cleaning device has been more and more popular with consumers due to its large cleaning area and high cleaning efficiency. The crawler-type surface cleaning device comprises a floor brush with a cleaning assembly, the cleaning assembly comprising two parallel and spaced apart driving rollers, a driven roller, and an annular cleaning member sleeved outside the driving rollers and the driven roller, the cleaning assembly further comprising a side plate detachably connected with the floor brush housing, the driving rollers and the driven roller being rotatably connected with the side plate so as to facilitate cleaning or maintenance of the annular cleaning member after the side plate is detached from the floor brush housing. Since the driving rollers are supported by the force of the rotatable connection end with the side plate, the cantilever end of the driving rollers away from the side plate is prone to deformation under the extrusion action of the annular cleaning member, which affects the supporting effect of the annular cleaning member and the service life of the driving rollers.

[0052] To address the aforementioned problems, Embodiment 1 proposes a tracked surface cleaning device, such as... Figures 1 to 3 As shown, a floor brush includes a track assembly and a drive motor 1. The track assembly includes a bracket 2, a drive roller 3, a driven roller 4, and an annular cleaning element 5. The drive roller 3 and the driven roller 4 are arranged at intervals. The annular cleaning element 5 is sleeved on the outside of the drive roller 3 and the driven roller 4, and has bristles on its outside for cleaning the surface to be cleaned. The bracket 2 includes a side plate 21 and a support portion 22. The floor brush includes a housing with a insertion hole. The side plate 21 has an insertion protrusion 213. The side plate 21 achieves connection with the insertion hole through the engagement of the insertion protrusion 213 with the insertion hole. The detachable connection of the housing enables the detachable installation of the track assembly and the floor brush. The drive roller 3 includes a drive section 31 and a transmission section 32, which are rotatably connected by a support 22. The drive motor 1 is connected to the drive section 31. The suspended end 311 of the drive section 31 is at least partially hollow. The drive motor 1 extends into the drive section 31 from the suspended end 311. The bracket 2 is also provided with a support wheel 6. The outer periphery of the drive section 31 is provided with a groove 7. The support wheel 6 and the groove 7 cooperate to support the suspended end 311 when the annular cleaning component 5 is running.

[0053] The track type surface cleaning device of the present application comprises a driving roller 3, a driven roller 4 and an annular cleaning member 5 sleeved outside the driving roller 3 and the driven roller 4. The driving roller 3 is driven to rotate by the driving motor 1, and the annular cleaning member 5 is driven to rotate to realize wiping and cleaning of the surface to be cleaned. The driven roller 4 plays a role of supporting the annular cleaning member 5 and assisting in rotation. The driving roller 3 comprises a driving section 31 and a transmission section 32. The driving section 31 and the transmission section 32 are rotationally connected by a support part 22. In this way, the support part 22 cooperates with the side plate 21 to realize two-point support of the transmission section 32, thereby enhancing the installation stability of the transmission section 32 and preventing it from being deformed inwardly under the extrusion of the annular cleaning member 5. In addition, the support part 22 shortens the cantilever length of the driving section 31, reduces the deformation amount of the driving section 31 under the extrusion of the annular cleaning member 5, and improves the support stability of the driving section 31 to a certain extent. On this basis, the driving motor 1 is inserted into the driving section 31 from the free end 311 thereof, which occupies a smaller side space of the track assembly, so that the annular cleaning member 5 can cover the track assembly in the width direction to a greater extent, thereby better covering and cleaning the surface to be cleaned at some corner positions and improving the cleaning effect of the surface cleaning device. Furthermore, the driving section 31 is provided with a groove 7 on the outer periphery, and the bracket 2 is provided with a support wheel 6. When the driving section 31 tends to be deformed toward the driven roller 4 under the extrusion force of the annular cleaning member 5, it will be limited in place under the limiting action of the support wheel 6 and the support groove 7, thereby reducing the probability of displacement deformation of the driving section 31 and improving the working stability of the driving section 31, thereby improving the working stability of the driving roller 3. Moreover, since the cleaning capacity of the annular cleaning member 5 is related to the tightness of its outer surface, the annular cleaning member 5 can be arranged to have a tight outer surface without worrying about the deformation of the driving roller 3, thereby improving the cleaning effect of the annular cleaning member 5.

[0054] Preferably, the side plate 21 is provided with a first rotation support 211 and a second rotation support 212. The driving roller 3 is sleeved on the first rotation support 211, and the driven roller 4 is sleeved on the second rotation support 212. The first rotation support 211 and the second rotation support 212 are synchronously rotated relative to the side plate 21 with the rotation of the driving roller 3 and the driven roller 4, respectively.

[0055] As a preferred embodiment in this embodiment 1, the inner surface of the annular cleaning piece 5 is provided with protrusions matched with the grooves 7 (not shown in the figure). The inner surface of the annular cleaning piece 5 is provided with protrusions matched with the grooves 7, which can improve the friction between the annular cleaning piece 5 and the driving roller 3. During the rotation of the driving roller 3, the driving roller 3 can easily drive the annular cleaning piece 5 to rotate synchronously due to the friction between the protrusions and the grooves 7, which improves the synchronous rotation rate of the annular cleaning piece 5 under the driving of the driving roller 3, and helps to improve the wiping effect on the surface to be cleaned. In addition, the setting of the grooves 7 and the protrusions also has a positioning effect for the assembly of the annular cleaning piece 5. When the annular cleaning piece 5 is sleeved, the protrusions only need to be placed in the grooves 7 to determine the sleeving position of the annular cleaning piece 5, which helps to improve the assembly efficiency of the annular cleaning piece 5.

[0056] Preferably, as shown in Figure 1 , the transmission section 32 is provided with grooves 7 matched with the protrusions. By providing grooves 7 on the transmission section 32, the protrusions inside the annular cleaning piece 5 are simultaneously embedded in the grooves 7 on the driving section 31 and the transmission section 32, which improves the relative friction between the driving roller 3 and the annular cleaning piece 5, and provides protection for the rotation efficiency of the annular cleaning piece 5.

[0057] Further, as shown in Figure 1 , the driven roller 4 is also provided with grooves 7 matched with the driving roller 3. The interaction force between the driven roller 4 and the annular cleaning piece 5 is enhanced, which further improves the rotation efficiency of the annular cleaning piece 5.

[0058] As a preferred embodiment in this embodiment 1, as shown in Figure 2 , Figure 3 , the driving motor 1 is rotationally connected to the support 2 through the pivot shaft 8, and the projection of the supporting wheel 6 towards the driving section 31 falls between the pivot shaft 8 and the supporting portion 22. The driving motor 1 is rotationally connected to the support 2 through the pivot shaft 8. When the cleaning work is finished and the track assembly needs to be cleaned, especially when the suction port is cleaned, the driving motor 1 can be rotated in other directions to avoid the suction port, which is convenient for the user to clean the hair, sewage and other dirt near the suction port that has not been sucked in. In addition, when the driving motor 1 is repaired and replaced, the driving motor 1 can also be rotated to a position convenient for operation for maintenance, which optimizes the user's experience in multiple directions. On this basis, the projection of the supporting wheel 6 towards the driving section 31 falls between the pivot shaft 8 and the supporting portion 22, so that the outer surface of the driving section 31 abuts against the supporting wheel 6 and the inner surface abuts against the main body of the driving motor 1. When the supporting wheel 6 applies a force to the driving section 31, the driving section 31 can be supported by the driving motor 1 inside, which can prevent the driving section 31 from being locally deformed under the abutting action of the supporting wheel 6.

[0059] Preferably, asFigure 2 As shown, the distance between the projection of the support wheel 6 towards the driving section 31 and the pivot shaft 8 is D1, and the distance between the projection of the support wheel 6 towards the driving section 31 and the support part 22 is D2, D1≤0.3D2. In this way, the length of the driving section 31 on the side away from the support part 22, i.e. the cantilever section 312, can be reduced, effectively reducing the deformation of the cantilever section 312.

[0060] As a preferred embodiment of the present embodiment 1, the driving motor 1 comprises a first output end (not shown in the figure) and a second output end (not shown in the figure), the first output end is in transmission connection with the driving section 31, and the second output end is in transmission connection with the transmission section 32.

[0061] The driving motor 1 comprises a first output end and a second output end, and the first output end and the second output end are respectively in transmission connection with the driving section 31 and the transmission section 32. In this way, the driving section 31 and the transmission section 32 can be driven to rotate synchronously by the driving motor 1. Compared with the mode that the transmission section 32 is driven to rotate by the driving section 31, the driving section 31 and the transmission section 32 have a higher synchronous rotation rate under the driving of the driving motor 1, which prevents the abrasion between the driving roller 3 and the inner surface of the annular cleaning member 5 caused by the rotation rate deviation of the driving section 31 and the transmission section 32, and helps to improve the driving efficiency of the annular cleaning member 5, thereby improving the cleaning effect of the track assembly. In addition, the rotation speed of the driving roller 3 can be adjusted by adjusting the output power of the driving motor 1, so as to adjust the advancing speed of the track assembly, without worrying about the rotation rate deviation problem of the driving section 31 and the transmission section 32 caused by the too fast output power of the driving motor 1.

[0062] As a preferred embodiment of the present embodiment 1, the driving motor 1 comprises a first output end (not shown in the figure) and a second output end (not shown in the figure), the first output end is in transmission connection with the driving section 31, and the second output end is in transmission connection with the transmission section 32. Figure 4As shown, the support wheel 6 includes an upper support wheel 61 and a lower support wheel 62 located on both sides of the plane where the central axes of the driving roller 3 and the driven roller 4 are located, and the line between the upper support wheel 61 and the central axis of the driving roller 3 and the line between the lower support wheel 62 and the central axis of the driving roller 3 are α, 20°≤α≤50°. The support wheel 6 is divided into the upper support wheel 61 and the lower support wheel 62 and is distributed on both sides of the plane where the central axes of the driving roller 3 and the driven roller 4 are located, so that the support wheel 6 can realize multi-directional and multi-angle uniform support of the driving section 31, and the upper support wheel 61 and the lower support wheel 62 can cooperate with the groove 7 to realize higher support limiting of the driving section 31 in view of the extrusion force applied to the annular cleaning piece 5 from above or below; in addition, the line between the upper support wheel 61 and the central axis of the driving roller 3 and the line between the lower support wheel 62 and the central axis of the driving roller 3 are set to 20°≤α≤50°, so that the upper support wheel 61 and the lower support wheel 62 can not only play a role in limiting the driving section 31 in the transverse direction, but also can ensure the vertical limiting of the driving section 31, thereby enhancing the comprehensiveness of the support effect of the driving section 31.

[0063] As a preferred example under the present embodiment, as shown in Figure 4 The distance between the upper support wheel 61 and the plane where the central axes of the driving roller 3 and the driven roller 4 are located is L1, the distance between the lower support wheel 62 and the plane where the central axes of the driving roller 3 and the driven roller 4 are located is L2, and L1=L2. In this way, the upper support wheel 61 and the lower support wheel 62 play a role in uniformly supporting the driving section 31, thereby improving the installation stability of the driving section 31.

[0064] As a preferred embodiment of the present application, as shown in Figure 5 The axial length of the driving section 31 is greater than the axial length of the transmission section 32. Figure 5 L3 is the axial length of the driving section 31, L4 is the axial length of the transmission section 32, and L3>L4. Setting the axial length of the driving section 31 to be greater than the axial length of the transmission section 32 can improve the proportion of the space occupied by the driving roller 3 under the driving action of the driving motor 1, thereby helping to reduce the driving rotation pressure of the driving section 31 on the transmission section 32 and improving the rotation synchronization rate of the driving roller 3 under the driving action of the driving motor 1. As another preferred embodiment of the present application, the aperture of the driving roller 3 is greater than the aperture of the driven roller 4. Figure 5 D3 is the aperture of the driving section 31, D4 is the aperture of the transmission section 32, and D3>D4. Setting the aperture of the driving roller 3 to be greater than the aperture of the driven roller 4 can make the driving roller 3 more easily drive the annular cleaning piece 5 to rotate and indirectly drive the driven roller 4 to rotate, thereby reducing the driving rotation pressure of the driving roller 3 on the driven roller 4 and helping to improve the rotation effect of the annular cleaning piece 5 and thus the cleaning effect of the annular cleaning piece 5.

[0065] As a preferred embodiment of the present application, as shown inFigure 6 , Figure 7 As shown, the bracket 2 is provided with a support frame 23 for mounting the support wheel 6; the bracket 2 has multiple mounting positions (not shown in the figure) along the length of the drive section 31, and the support frame 23 can be movably connected to the bracket 2 and fixed at any mounting position. The support wheel 6 is mounted on the bracket 2 via the support frame 23, and the bracket 2 has multiple mounting positions, which facilitates adjusting the relative positional relationship between the support wheel 6 and the groove 7 by adjusting the position of the support frame 23; when the alignment deviation between the support wheel 6 and the groove 7 occurs due to manufacturing design deviation or replacement with a drive roller 3 of different size and with different groove 7 positions, the support wheel 6 can be aligned with the groove 7 by adjusting the position of the support frame 23, so that the support wheel 6 can be smoothly embedded in the groove 7, thereby enhancing the adaptability of the support wheel 6 to different models of drive roller 3.

[0066] In this embodiment, the fixing method of the support frame 23 at each support position is not limited. In a preferred example, the bracket 2 is provided with a positioning interval extending along the length direction of the bracket 2. The support frame 23 can slide within the positioning interval and includes a positioning buckle. When the support frame 23 drives the support wheel 6 to move to the position aligned with the groove 7, it is locked onto the bracket 2 by the positioning buckle, thereby locking the support frame 23 at that installation position. That is, in this example, any point within the positioning interval can be used as an installation position. In another example, multiple installation positions are provided at intervals within the positioning interval on the bracket 2. Each installation position is provided with a positioning slot. The support frame 23 includes a positioning buckle. The support frame 23 can move to any installation position and achieve position locking through the cooperation of the positioning buckle and the positioning slot.

[0067] Preferably, such as Figure 7 As shown, the support frame 23 includes two aligned frame bodies 231 and a support rod 232 located between the two frame bodies 231. A support wheel 6 is sleeved on the support rod 232, and the length of the support rod 232 is greater than the width of the support wheel 6 so that the support wheel 6 can move along the length direction of the support rod 232. With this configuration, when the support frame 23 is moved to a certain installation position, if there is still a small misalignment between the support wheel 6 and the groove 7, the position of the support wheel 6 on the support rod 232 can be adjusted by sliding the support wheel 6 so that the support wheel 6 is aligned with the groove 7, thus achieving the engagement of the support wheel 6 and the groove 7 and avoiding the impact on the rotation of the drive section 31 caused by the misalignment of the support wheel 6 and the groove 7.

[0068] Further, an adjusting mechanism is arranged between the support frame 23 and the support 2, which can adjust the distance between the support frame 23 and the support 2, so as to drive the support wheel 6 to approach or move away from the driving roller 3. By arranging the adjusting mechanism, the distance between the support wheel 6 and the driving roller 3 can be adjusted by adjusting the support frame 23 according to actual needs. For example, when the surface tufts of the annular cleaning piece 5 are gradually thinned due to abrasion during long-term use, the cleaning ability of the annular cleaning piece 5 to the surface to be cleaned is weakened, and the tightness of the annular cleaning piece 5 needs to be improved to ensure the cleaning ability to the surface to be cleaned. At this time, the position of the support frame 23 can be adjusted by the adjusting mechanism, so that the support wheel 6 abuts against the driving section 31, and then the driving roller 3 and the driven roller 4 can tighten the annular cleaning piece 5.

[0069] As a preferred embodiment of the present application, as shown in Figure 8 The two sides of the groove 7 are provided with inclined guide slopes 71. During installation of the driving roller 3, the support wheel 6 can be more smoothly embedded into the groove 7 and matched with the groove 7 under the action of the guide slopes 71.

[0070] As a preferred embodiment of the present application, the support part 22 includes a bearing frame 222 fixedly connected with the support 2 and a bearing 221 located inside the bearing frame 222, and the driving section 31 drives the transmission section 32 to rotate through the bearing 221 when rotating.

[0071] Embodiment 2:

[0072] The structure and working principle of the present embodiment 2 are basically the same as those of the embodiment 1, and the difference lies in that:

[0073] As shown in Figure 9 The driving motor 1 is provided with only one output end head 11 located in the driving section, the driving motor 1 drives the driving section 31 to rotate through the output end head 11, and the driving section 31 drives the transmission section 32 to rotate through the support part 22.

[0074] Embodiment 3:

[0075] The structure and working principle of the present embodiment 3 are basically the same as those of the embodiment 1, and the difference lies in that:

[0076] The distance between the upper support wheel and the plane where the center axes of the driving roller and the driven roller are located is L5, the distance between the lower support wheel and the plane where the center axes of the driving roller and the driven roller are located is L6, and L5 < L6. In this way, the abutting point of the lower support wheel and the driving section is located below the groove, so that the lower support wheel can support the driving section to some extent, which is helpful to maintain the installation stability of the driving roller.

[0077] The places not mentioned in the present application can be realized by using or referring to the existing technology.

[0078] The various embodiments in the specification are described in progressive manner, and the same or similar parts between the various embodiments can be mutually referred to, and each embodiment focuses on the difference from other embodiments.

[0079] The above merely provides an example of the present application, and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A surface cleaning apparatus comprising a floor brush having a track assembly and a drive motor, the track assembly comprising a support, a driving roller, a driven roller and an endless cleaning member, the support comprising side plates and support portions, the track assembly being detachably mounted to the floor brush by the side plates, the driving roller comprising a driving section and a transmission section, the driving section and the transmission section being rotatably connected at a connection by the support portions, the drive motor being in transmission connection with the driving section, characterized in that, The overhanging end of the driving section is at least partially hollow, the driving motor extends into the driving section from the overhanging end, the support wheel is further arranged on the support frame, the outer periphery of the driving section is provided with a groove, and the support wheel cooperates with the groove to support the overhanging end when the annular cleaning member operates.

2. The surface cleaning apparatus of claim 1, wherein, An inner surface of the annular cleaning member is provided with a protrusion cooperating with the groove.

3. The surface cleaning apparatus of claim 1, wherein, The driving motor is rotatably connected to the support frame through a pivot shaft, and a projection of the support wheel towards the driving section falls between the pivot shaft and the support portion.

4. The surface cleaning apparatus of claim 1, wherein, The driving motor comprises a first output end and a second output end, the first output end is in driving connection with the driving section, and the second output end is in driving connection with the transmission section.

5. The surface cleaning apparatus of claim 1, wherein, The support wheel comprises an upper support wheel and a lower support wheel located on both sides of a plane where the center axes of the driving roller and the driven roller are located, a line between the upper support wheel and the center axis of the driving roller and a line between the lower support wheel and the center axis of the driving roller are α, and 20°≤α≤50°.

6. The surface cleaning apparatus of claim 5, wherein, The upper support wheel is at a distance L1 from the plane where the center axes of the driving roller and the driven roller are located, the lower support wheel is at a distance L2 from the plane where the center axes of the driving roller and the driven roller are located, and L1 7. The surface cleaning apparatus of claim 1, wherein, The axial length of the driving section is greater than the axial length of the transmission section, and / or the hole diameter of the driving roller is greater than the hole diameter of the driven roller.

8. The surface cleaning apparatus of claim 1, wherein, The support frame is provided with a support frame for mounting the support wheel, and the support frame is movably connected with the support frame and can be fixed to any mounting position along the length direction of the driving section.

9. The surface cleaning apparatus of claim 8, wherein, The support frame comprises two pairs of support rods arranged between two frame bodies, the support wheel is sleeved on the support rod, and the length of the support rod is greater than the width of the support wheel so that the support wheel can move along the length direction of the support rod.

10. The surface cleaning apparatus of any one of claims 8 or 9, further comprising an adjusting mechanism arranged between the support frame and the support frame, the adjusting mechanism can adjust the distance between the support frame and the support frame to drive the support wheel to approach or move away from the driving roller. ​

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