Cleaning device and scrubber

Abstract

The utility model relates to a cleaning device and a scrubber. The cleaning device comprises a support; the cleaning assembly comprises a roller rotationally connected with the support, and the roller is provided with an exposed part located outside the support; the protective cover is movably connected with the support, the protective cover can move relative to the support and is provided with a first position and a second position, and at least part of the protective cover is located outside the support to cover the exposed part when the protective cover is located at the first position; when the protective cover moves to the second position, the part, located in the support, of the protective cover is larger than the part, located in the support, of the protective cover at the first position so that the exposed part can be exposed. When the cleaning device stops cleaning the ground, the protective cover can effectively cover the exposed part of the roller, the exposed part can be prevented from being damaged by foreign objects, and therefore the reliability of the cleaning device is improved. And when the cleaning device passes through the carpet, the protective cover can form a physical isolation effect on the exposed part, so that the exposed part is prevented from polluting the carpet, and the reliability of the cleaning device is improved.

Description

Technical Field

[0001] The present application relates to the field of floor scrubbers, and particularly to a cleaning device and a floor scrubber including the cleaning device. Background Art

[0002] A floor scrubber is a cleaning machine suitable for cleaning hard floors, sucking up sewage, and taking the sewage away from the site. The floor scrubber has the advantages of environmental protection, energy saving, and high efficiency. The roller of the cleaning device in the floor scrubber is used to clean the floor. When the floor scrubber travels on a carpet, although the roller will also be lifted to a certain height to avoid contacting the lint on the carpet so as not to contaminate the lint. Generally, the lifting height of the roller is limited. In the case where the lint length on the carpet is relatively large, the roller will inevitably contact the lint, thus affecting the reliability of the cleaning device and the entire floor scrubber. Summary of the Invention

[0003] One technical problem solved by the present application is how to improve the working reliability of the cleaning device.

[0004] A cleaning device includes:

[0005] A bracket;

[0006] A cleaning assembly including a roller rotatably connected to the bracket, the roller having an exposed portion outside the bracket; and

[0007] A protective cover movably connected to the bracket, the protective cover being capable of moving relative to the bracket and having a first position and a second position. In the first position, the protective cover is at least partially outside the bracket to cover the exposed portion; when moving to the second position, the portion of the protective cover inside the bracket is greater than the portion of the protective cover inside the bracket in the first position so as to expose the exposed portion.

[0008] In one embodiment, it further includes a fixed seat and a lifting assembly, the bracket is rotatably connected to the fixed seat, and the lifting assembly drives the bracket to rotate.

[0009] In one embodiment, it further includes an elastic member, and the elastic member abuts between the bracket and the fixed seat.

[0010] In one embodiment, the protective cover is capable of rotating relative to the bracket about the axis of the roller, one of the protective cover and the bracket has an arc-shaped groove and the other includes a convex post, the arc-shaped groove is arranged around the axis of the roller, the convex post is slidably engaged with the arc-shaped groove, the arc-shaped groove has a first end and a second end, when the convex post abuts against the first end, the protective cover is in the first position, and when the convex post abuts against the second end, the protective cover is in the second position.

[0011] In one embodiment, the sliding groove is an arc-shaped groove and is arranged around the roller. The slider is a columnar convex post, and the slider is in sliding fit with the arc-shaped groove.

[0012] In one embodiment, the protective cover includes a convex portion in contact with the roller. When the roller rotates in the first direction, the frictional force between the roller and the convex portion drives the protective cover to move to the first position. When the roller rotates in the second direction opposite to the first direction, the frictional force between the roller and the convex portion drives the protective cover to move to the second position.

[0013] In one embodiment, the bracket includes a mounting member that can abut against the protective cover. The convex post protrudes from the mounting member, the arc-shaped groove is arranged on the protective cover, and the mounting member can abut against the protective cover along the axial direction of the roller.

[0014] In one embodiment, the protective cover includes a covering portion and a guiding portion. The covering portion is used to cover the exposed portion. The guiding portion is located at the end of the covering portion and is connected to the covering portion at an angle to abut against the mounting member. The arc-shaped groove is arranged on the guiding portion.

[0015] In one embodiment, the bracket further includes a housing that can cover the protective cover. The housing includes a first housing portion and a second housing portion. The first housing portion is arranged around the roller. The second housing portion is located at the end of the first housing portion and is connected to the first housing portion at an angle. The mounting member is fixedly connected to the second housing portion, and a set-width avoidance gap is formed between the mounting member and the second housing portion along the axial direction of the roller. The guiding portion is matched with the avoidance gap.

[0016] In one embodiment, it further includes at least one of the following solutions:

[0017] It further includes a limiting member. The limiting member is detachably connected to the bracket. When in the second position, the protective cover can abut against the limiting member along the circumferential direction of the roller.

[0018] The cleaning assembly further includes an inner core. The inner core is fixedly connected to the bracket, and the roller is rotatably sleeved outside the inner core.

[0019] It further includes a driver. The driver is connected to the bracket, and the driver is used to drive the protective cover to move relative to the bracket.

[0020] A floor washer includes the cleaning device according to any one of the above.

[0021] One technical effect of an embodiment of the present application is that when the cleaning device stops cleaning the ground, the protective cover can move relative to the bracket to the first position, so that the protective cover effectively covers the exposed part of the roller, preventing foreign objects from damaging the exposed part and thus improving the reliability of the cleaning device. When the cleaning device passes through a carpet or a dry area on the ground that needs to be kept dry, the protective cover can also be located relative to the bracket at the second position to cover the exposed part, that is, the protective cover forms a physical isolation effect on the exposed part, avoiding the exposed part from contaminating the lint on the carpet or the dry area, and thus improving the reliability of the cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. 6 is a partial perspective structural view of the protective cover of the cleaning device in the floor washer provided in an embodiment when in the second position.

[0023] Figure 2 FIG. Figure 1 10 is a partial perspective structural view of the protective cover of the cleaning device in the floor washer shown when in the first position.

[0024] Figure 3 FIG. Figure 1 18 is a perspective structural view of the cleaning device in the floor washer shown.

[0025] Figure 4 FIG. Figure 3 24 is a perspective structural view of the cleaning device shown from another perspective.

[0026] Figure 5 FIG. Figure 3 30 is a first exemplary exploded structural view of the cleaning device shown.

[0027] Figure 6 FIG. Figure 3 36 is a perspective structural view of the protective cover in the cleaning device shown.

[0028] Figure 7 FIG. Figure 3 42 is a second exemplary exploded structural view of the cleaning device shown.

[0029] Figure 8 FIG. Figure 3 48 is a perspective sectional structural view of the cleaning device shown.

[0030] Figure 9 FIG. Figure 3 54 is a partial exploded structural view of the cleaning device shown.

[0031] Figure 10 FIG. Figure 9 60 is an enlarged view of the structure at A in FIG.

[0032] Reference numerals: floor washer 10, cleaning device 20, first position 21, second position 22, bracket 100, receiving space 101, mounting member 110, avoidance gap 111, convex post 120, housing 130, first housing portion 131, second housing portion 132, rotating shaft 140, cleaning assembly 200, drum 210, exposed portion 211, inner core 220, protective cover 300, covering portion 310, guiding portion 320, arc groove 321, first end 3211, second end 3212, protruding portion 330, convex block 331, convex strip 332, fixed seat 410, lifting assembly 420, cable 421, elastic member 430, limiting member 440. Detailed implementation manners

[0033] To make the above objects, features, and advantages of the present application more apparent and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if these terms "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 accompanying 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 therefore should not be construed as a limitation to the present application.

[0035] In addition, if these terms "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 indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. 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.

[0036] In this application, unless otherwise clearly defined and limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In this application, unless otherwise clearly defined and limited, if there is a description such as the first feature being "on" or "under" the second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0039] Refer to Figure 3 、 Figure 4 and Figure 5 In an embodiment of the present application, a cleaning device 20 includes a bracket 100, a cleaning assembly 200 and a protective cover 300. The cleaning assembly 200 and the protective cover 300 are both disposed on the bracket 100.

[0040] Refer to Figure 3 、 Figure 4 and Figure 5 In some embodiments, the cleaning assembly 200 includes a core 220 and a drum 210. The core 220 is fixedly connected to the bracket 100. The drum 210 is sleeved outside the core 220. The drum 210 and the core 220 can be coaxially arranged. The drum 210 can roll relative to the core 220 around the axis of the drum 210. When the drum 210 rotates relative to the core 220, the drum 210 can contact the ground and form a cleaning effect on the ground.

[0041] Referring to Figure 4 、 Figure 5 and Figure 7 ,in some embodiments, the cleaning device 20 may further include a fixed seat 410, a lifting assembly 420, and an elastic member 430. The bracket 100 is rotatably connected to the fixed seat 410, so that the bracket 100 can rotate about a rotating shaft 140 parallel to the axis of the drum 210. When the bracket 100 rotates relative to the fixed seat 410, both the cleaning assembly 200 and the protective cover 300 will follow the bracket 100 to rotate synchronously relative to the fixed seat 410. The lifting assembly 420 is disposed on the fixed seat 410. The lifting assembly 420 includes a retractable cable 421. One end of the cable 421 is fixedly connected to the bracket 100. When the length of the cable 421 extends or contracts, it will cause the cleaning assembly 200, the protective cover 300, and the bracket 100 to move closer to or farther from the ground. Specifically, when the cable 421 extends, it can cause the cleaning assembly 200, the protective cover 300, and the bracket 100 to move closer to the ground until the drum 210 contacts the ground to clean the ground; when the cable 421 contracts, it can cause the cleaning assembly 200, the protective cover 300, and the bracket 100 to move away from the ground, and then the drum 210 is separated from the ground and kept at a certain distance from the ground.

[0042] The elastic member 430 is abutted between the bracket 100 and the fixed seat 410. The elastic member 430 can be a torsion spring. When the bracket 100 moves away from the ground, the elastic member 430 can store energy. When the bracket 100 moves closer to the ground, the elastic member 430 can release energy. When the drum 210 contacts the ground to clean the ground, the elastic member 430 can generate a certain pre-pressure on the drum 210 through the bracket 100, so that there is a reasonable pressure between the drum 210 and the ground, thereby realizing effective cleaning of the ground by the drum 210.

[0043] Referring to Figure 5 、 Figure 7 、 Figure 9 and Figure 10, in some embodiments, the bracket 100 includes a mounting member 110, a stud 120 and a housing 130. The housing 130 can cover the protective cover 300 and the drum 210. The housing 130 can include a first housing portion 131 and a second housing portion 132. The first housing portion 131 is disposed around the drum 210. The length of the first housing portion 131 can be substantially equal to the length of the drum 210. The first housing portion 131 can extend a certain length along the circumferential direction of the drum 210, such that the first housing portion 131 is substantially arc-shaped. The number of the second housing portions 132 can be two. The two second housing portions 132 are respectively disposed at opposite ends of the first housing portion 131. The second housing portion 132 is disposed at an angle with the first housing portion 131. For example, the second housing portion 132 and the first housing portion 131 can be perpendicularly disposed to each other, such that the axis of the drum 210 can be parallel to the first housing portion 131 and perpendicular to the second housing portion 132. The two second housing portions 132 are located on the same side in the thickness direction of the first housing portion 131, such that the entire housing 130 encloses a receiving space 101. Both ends of the inner core 220 of the cleaning assembly 200 can be fixedly connected to the two second housing portions 132 by means of bolts. A part of the cleaning assembly 200 is located inside the receiving space 101 and another part is located outside the receiving space 101. In this way, a part of the drum 210 is located inside the receiving space 101 and another part of the drum 210 is located outside the receiving space 101. The part of the drum 210 located outside the receiving space 101 can be denoted as an exposed portion 211, and the exposed portion 211 is used to contact the ground to perform a cleaning function on the ground.

[0044] Refer to Figure 5 , Figure 7 , Figure 9 and Figure 10 , the number of the mounting members 110 is equal to the number of the studs 120, such that the mounting members 110 and the studs 120 form a one-to-one correspondence. Both the mounting member 110 and the stud 120 can be located inside the receiving space 101 of the housing. The mounting member 110 can be a flat plate structure and is fixedly connected to the second housing portion 132. For example, it can be fixedly connected by means of bolts. One mounting member 110 can be fixed on each second housing portion 132. The mounting member 110 can be substantially perpendicular to the axis of the drum 210. The stud 120 protrudes from the mounting member 110, and the stud 120 can be substantially parallel to the axis of the drum 210. A clearance 111 (such as Figure 8 ) can be formed between the mounting member 110 and the second housing portion 132. The clearance 111 cooperates with the protective cover 300, and the clearance 111 has a set width along the axial direction of the drum 210. In view of the cooperation between the protective cover 300 and the clearance 111, the mounting member 110 and the second housing portion 132 can form a good positioning effect on the protective cover 300 along the axial direction of the drum 210, thereby improving the assembly accuracy and assembly efficiency of the protective cover 300.

[0045] Refer toFigure 5 , Figure 6 , Figure 9 and Figure 10 , in some embodiments, the protective cover 300 is movably connected to the bracket 100. For example, the protective cover 300 can be rotatably connected to the bracket 100, so that the protective cover 300 can rotate around the axis of the drum 210. The protective cover 300 includes a covering portion 310, a guiding portion 320 and a protruding portion 330. The covering portion 310 is disposed around the drum 210, and the length of the covering portion 310 can be substantially equal to the length of the drum 210. The covering portion 310 can extend a certain length along the circumferential direction of the drum 210, so that the covering portion 310 is substantially arc-shaped. The number of the guiding portions 320 can be two, and the two guiding portions 320 are respectively disposed at opposite ends of the covering portion 310. The guiding portion 320 is disposed at an angle with the covering portion 310. For example, the guiding portion 320 and the covering portion 310 can be perpendicularly disposed, so that the axis of the drum 210 can be parallel to the covering portion 310 and perpendicular to the guiding portion 320. The two guiding portions 320 are on the same side in the thickness direction of the covering portion 310. The number of the protruding portions 330 can be multiple, and the multiple protruding portions 330 can protrude along the radial direction of the drum 210 and are disposed on the inner wall surface of the guiding portion 320. The protruding portion 330 can be in contact with the outer circumferential surface of the drum 210, so that a frictional force can be generated between the protruding portion 330 and the drum 210. For example, the protruding portion 330 can include a convex block 331 and / or a convex strip 332. The length of the convex strip 332 can be substantially equal to the length of the covering portion 310. The convex strip 332 extends along the length direction of the covering portion 310. The length of the convex block 331 is much smaller than the length of the convex strip 332. The number of the convex blocks 331 is multiple, and the multiple convex blocks 331 are spaced apart along the axial direction of the drum 210.

[0046] Refer to Figure 5 , Figure 7 , Figure 9 and Figure 10, in some embodiments, one of the protective cover 300 and the bracket 100 has a sliding groove and the other includes a protruding slider. For example, a sliding groove is formed on the guiding portion 320, and the sliding groove can be an arc-shaped groove 321. The arc-shaped groove 321 is arranged around the axis of the roller 210, so that the arc-shaped groove 321 extends a certain length along the circumferential direction of the roller 210. The convex post 120 on the bracket 100 is slidably engaged with the arc-shaped groove 321. Obviously, the shape of the convex post 120 is columnar, and the convex post 120 can be understood as a slider slidably engaged with the arc-shaped groove 321. When the convex post 120 slides relatively in the arc-shaped groove 321, through the guiding action of the arc-shaped groove 321, the rotation of the protective cover 300 relative to the bracket 100 around the axis of the roller 210 can be realized. In other embodiments, the arc-shaped groove 321 can be formed on the bracket 100, and the protective cover 300 can include a convex post 120. In this way, the rotation of the protective cover 300 relative to the bracket 100 around the axis of the roller 210 can also be realized. The arc-shaped groove 321 has a first end 3211 and a second end 3212. Obviously, the first end 3211 and the second end 3212 are spaced at a certain angle along the circumferential direction of the roller 210. When the roller 210 rotates under the driving action of the motor, in view of the frictional force generated by the contact between the protruding portion 330 of the protective cover 300 and the roller 210, through the action of this frictional force, the roller 210 can drive the entire protective cover 300 to rotate relative to the bracket 100 as well.

[0047] Refer to Figure 1 , Figure 2 and Figure 4 , the protective cover 300 moves relative to the bracket 100 and has a first position 21 and a second position 22. In the first position 21, the covering portion 310 of the protective cover 300 can be at least partially located outside the receiving space 101 of the bracket 100 to cover the exposed portion 211. At this time, the convex post 120 abuts against the first end 3211 of the arc-shaped groove 321; in the second position 22, the covering portion 310 of the protective cover 300 can be at least partially located inside the receiving space 101 of the bracket 100 to stop covering the exposed portion 211, so that the exposed portion 211 is exposed. It can be understood that the portion of the protective cover 300 located inside the receiving space 101 in the second position 22 is larger than the portion of the protective cover 300 located inside the receiving space 101 in the first position 21. At this time, the convex post 120 abuts against the second end 3212 of the arc-shaped groove 321, and the covering portion 310 can be spaced at a certain angle along the circumferential direction of the roller 210.

[0048] Refer to Figure 10 , when the protective cover 300 is in the second position 22, the roller 210 can be rotated in a first direction, and the first direction can be the counterclockwise direction (i.e., Figure 10(as indicated by the thick dashed arrow), so that the roller 210 drives the protective cover 300 to rotate relative to the bracket 100 in the first direction, and then the convex column 120 moves closer to the first end 3211 in the arc-shaped groove 321. When the convex column 120 abuts against the first end 3211 of the arc-shaped groove 321, due to the interference of the convex column 120, the roller 210 can no longer drive the protective cover 300 to rotate relative to the bracket 100 in the first direction. At this time, the protective cover 300 will be in the first position 21, and the covering portion 310 can be located outside the receiving space 101 of the bracket 100 to cover the exposed portion 211.

[0049] When the protective cover 300 is in the first position 21, the roller 210 can be rotated in the second direction, and the second direction can be the clockwise direction (i.e., Figure 10 (as indicated by the thick solid arrow), so that the roller 210 drives the protective cover 300 to rotate relative to the bracket 100 in the second direction, and then the convex column 120 moves closer to the second end 3212 in the arc-shaped groove 321. When the convex column 120 abuts against the second end 3212 of the arc-shaped groove 321, due to the interference of the convex column 120, the roller 210 can no longer drive the protective cover 300 to rotate relative to the bracket 100 in the second direction. At this time, the protective cover 300 will be in the second position 22, and the covering portion 310 can be located inside the receiving space 101 of the bracket 100 to stop covering the exposed portion 211, and the covering portion 310 can be spaced from the exposed portion 211 by a certain angle along the circumferential direction of the roller 210.

[0050] Refer to Figure 10 , it can be understood that when the protective cover 300 is in the second position 22, the roller 210 can continue to rotate relative to the bracket 100 in the second direction, so that the exposed portion 211 of the roller 210 cleans the ground. During the process of the roller 210 rotating in the second direction to clean the ground, the convex column 120 of the bracket 100 interferes with the protective cover 300, making the protective cover 300 unable to continue rotating in the second direction from this second position 22. At the same time, the protective cover 300 also cannot interfere with the movement of the roller 210 in the second direction, ensuring that the roller 210 can move smoothly in the second direction to effectively clean the ground.

[0051] When it is necessary to clean the ground of the cleaning device 20, the roller 210 can be rotated in the second direction. The roller 210 will drive the protective cover 300 to move relative to the bracket 100 to the second position 22, so as to eliminate the covering of the exposed part 211 of the roller 210 by the protective cover 300, ensuring that the exposed part 211 of the roller 210 contacts the ground to form an effective cleaning. When the cleaning device 20 stops cleaning the ground, the roller 210 can be rotated in the first direction. The roller 210 will drive the protective cover 300 to move relative to the bracket 100 to the first position 21, so that the protective cover 300 effectively covers the exposed part 211 of the roller 210, which can prevent foreign objects from damaging the exposed part 211, thereby improving the reliability of the cleaning device 20. When the cleaning device 20 passes through a carpet or a dry area on the ground that needs to be kept dry, the protective cover 300 can also cover the exposed part 211, that is, the protective cover 300 forms a physical isolation effect on the exposed part 211, avoiding the pollution of the exposed part 211 to the lint on the carpet or the dry area of the ground, thereby improving the reliability of the cleaning device 20.

[0052] Since the movement of the protective cover 300 is directly realized by the roller 210 by means of friction, the setting of an additional driver can be omitted. In this way, the structure of the cleaning device 20 can be simplified and the manufacturing cost of the cleaning device 20 can be reduced.

[0053] In some embodiments, before rotating the roller 210 in the first direction to drive the protective cover 300 to cover the exposed part 211, the cable 421 of the lifting assembly 420 can be contracted, and then the cable 421 drives the roller 210 to move away from the ground by a certain distance, that is, the roller 210 is located at a certain position above the ground. For example, the roller 210 can be located at a position about 10 mm above the ground. At this time, the resistance of the ground to the rotation of the protective cover 300 relative to the bracket 100 can be eliminated, ensuring that the roller 210 smoothly drives the protective cover 300 to cover the exposed part 211.

[0054] Refer to Figure 3 and Figure 4, in some embodiments, the cleaning device 20 may further include a limiting member 440. The limiting member 440 may be detachably connected to the first housing portion 131 of the bracket 100. For example, the limiting member 440 may be bolted to the first housing portion 131. When the protective cover 300 is in the second position 22, one end of the covering portion 310 in the circumferential direction can abut against the limiting member 440 along the circumferential direction of the drum 210. In this way, the limiting member 440 further limits the protective cover 300, ensuring that the protective cover 300 is stable in the second position 22. Of course, when the protective cover 300 is in the first position 21, the other end of the covering portion 310 in the circumferential direction can also abut against the limiting member 440 along the circumferential direction of the drum 210. In this way, the limiting member 440 further limits the protective cover 300, ensuring that the protective cover 300 is stable in the first position 21.

[0055] In some embodiments, a driver may be additionally provided on the bracket 100. The protective cover 300 may be rotatably connected to the bracket 100 in a way of gear meshing, so that the driver forms a driving force on the protective cover 300. Then, the driver drives the protective cover 300 to rotate relative to the bracket 100, rather than the drum 210 driving the protective cover 300 to rotate through the action of friction. Therefore, in this embodiment, the protective cover 300 is driven to rotate by a driver independently provided other than the drum 210.

[0056] Refer to Figure 1 and Figure 2 , the present application also provides a floor washer 10. The floor washer 10 includes the above-mentioned cleaning device 20. In this way, the reliability of the floor washer 10 can also be improved and its manufacturing cost can be reduced.

[0057] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0058] The above-described embodiments only represent several implementation manners of the present application. 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 still 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 should be subject to the appended claims.

Claims

1. A cleaning device, characterized in that: include: Bracket; A cleaning assembly, comprising a roller rotatably connected to the bracket, the roller having an exposed portion located outside the bracket; and A protective cover is movably connected to the bracket, and the protective cover can move relative to the bracket to have a first position and a second position. In the first position, the protective cover is at least partially located outside the bracket to cover the exposed portion; when moving to the second position, the portion of the protective cover located inside the bracket is larger than the portion of the protective cover located inside the bracket when in the first position so that the exposed portion is exposed.

2. The cleaning device according to claim 1, characterized in that: It also includes a fixing seat and a lifting component, and the lifting component is used to drive the bracket to lift so as to drive the cleaning component to lift.

3. The cleaning device according to claim 2, characterized in that: The bracket is rotatably connected to the fixing seat, and the lifting assembly drives the bracket to rotate.

4. The cleaning device according to claim 2 or 3, characterized in that: It also includes an elastic member, which is abutted between the bracket and the fixing seat.

5. The cleaning device according to claim 2 or 3, characterized in that: The protective cover can rotate relative to the bracket around the axis of the drum, one of the protective cover and the bracket has a sliding groove and the other includes a raised slider, the slider slides in cooperation with the sliding groove, the sliding groove has a first end and a second end, when the slider abuts against the first end, the protective cover is located at the first position, and when the slider abuts against the second end, the protective cover is located at the second position.

6. The cleaning device according to claim 5, characterized in that: The sliding groove is an arc groove and is arranged around the roller. The sliding block is a columnar protrusion. The sliding block is slidably matched with the arc groove.

7. The cleaning device according to claim 6, characterized in that: The protective cover includes a protrusion that contacts the roller. When the roller rotates in a first direction, the friction between the roller and the protrusion drives the protective cover to move to the first position. When the roller rotates in a second direction opposite to the first direction, the friction between the roller and the protrusion drives the protective cover to move to the second position.

8. The cleaning device according to claim 7, characterized in that: The bracket includes a mounting member capable of abutting against the protective cover, the boss is protrudingly arranged on the mounting member, the arc-shaped groove is arranged on the protective cover, and the mounting member can abut against the protective cover along the axial direction of the roller.

9. The cleaning device according to claim 8, characterized in that: The protective cover includes a covering portion and a guiding portion, wherein the covering portion is used to cover the exposed portion, the guiding portion is located at the end of the covering portion and is connected to the covering portion at an angle to abut against the mounting member, and the arc groove is arranged on the guiding portion.

10. The cleaning device according to claim 9, characterized in that: The bracket also includes an outer shell capable of covering the protective cover, the outer shell includes a first shell portion and a second shell portion, the first shell portion is arranged around the drum, the second shell portion is located at the end of the first shell portion and is connected to the first shell portion at an angle, the mounting member is fixedly connected to the second shell portion, and an avoidance gap with a set width is formed between the mounting member and the second shell portion along the axial direction of the drum, and the guide portion cooperates with the avoidance gap.

11. The cleaning device according to claim 1, characterized in that: Also includes at least one of the following options: It also includes a limiting member, which is detachably connected to the bracket, and when in the second position, the protective cover can abut against the limiting member along the circumference of the drum; The cleaning assembly further comprises an inner core, the inner core is fixedly connected to the bracket, and the roller is rotatably sleeved outside the inner core; It also includes a driver, which is connected to the bracket and is used to drive the protective cover to move relative to the bracket.

12. A floor scrubber, characterized in that: A cleaning device comprising the cleaning device according to any one of claims 1 to 11.

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