Floor brush and cleaning device

Abstract

The present disclosure relates to the technical field of floor cleaning equipment, and provides a floor brush and a cleaning device, the floor brush comprising: a shell; a motor arranged in the shell; a brush head in the shape of a Luer triangle; a square gear fixedly arranged on the shell; a rotating rod having opposite first and second ends, the first end of the rotating rod being connected with the motor, the rotating rod being provided with a sliding rail extending linearly from the first end to the second end of the rotating rod; a revolving gear movably arranged on the sliding rail and elastically reciprocatingly movable along the sliding rail, the revolving gear being connected with the brush head and engaged with the square gear; when the motor rotates, the rotating rod is driven to rotate, the rotating rod drives the revolving gear and the brush head to rotate together, and the revolving gear revolves around the square gear in the process of rotating. The present disclosure makes the trajectory of each corner of the brush head a square, thereby achieving the purpose of thoroughly cleaning the corners of the floor.

Description

Technical Field

[0001] This disclosure relates to the field of floor cleaning equipment technology, and more specifically, to a floor brush and cleaning device. Background Technology

[0002] The floor cleaning brushes of existing floor scrubbers, floor vacuum cleaners, and other cleaning equipment are generally round, and they rotate around the center of the brush. Because the movement trajectory of the floor cleaning brush is circular, it cannot clean corners and other areas, resulting in a poor user experience when using a rotating floor cleaning brush.

[0003] In addition, there are some improved existing cleaning devices with floor brushes that can clean corners, but the cleaning path of these brushes on the floor is not strictly square, resulting in incomplete cleaning of corners. Summary of the Invention

[0004] The purpose of this disclosure is to provide a floor brush and cleaning device to solve the technical problem that existing cleaning equipment's floor brushes cannot thoroughly clean the corners of the floor and walls.

[0005] To achieve the above objectives, the technical solution adopted in this disclosure is as follows:

[0006] According to a first aspect of the present disclosure, a floor brush is provided, comprising: a housing; a motor disposed within the housing; a brush head shaped like a Reuleaux triangle; a square gear fixedly disposed on the housing; a rotating rod having a first end and a second end opposite to each other, the first end of the rotating rod being connected to the motor, and a slide rail extending linearly from the first end to the second end of the rotating rod; a revolving gear movably disposed on the slide rail and capable of elastically reciprocating along the slide rail, the revolving gear being connected to the brush head and meshing with the square gear; when the motor rotates, it drives the rotating rod to rotate, the rotating rod causing the revolving gear and the brush head to rotate together, and the revolving gear simultaneously revolves around the square gear during its rotation.

[0007] In one optional embodiment of this disclosure, the square gear includes: a square plate and a plurality of cylinders, one end of the plurality of cylinders being perpendicularly connected to one side edge of the square plate in the thickness direction, the cylinders being spaced apart from each other and with equal spacing; the outer shell is provided with a first blind hole corresponding to the plurality of cylinders, and the other end of the plurality of cylinders being inserted into the first blind hole.

[0008] In one optional embodiment of this disclosure, the slide rail is a through groove passing through the rotating rod, and a second blind hole is provided on the side wall of the groove near the second end of the rotating rod; the floor brush also includes: a slider and a helical spring, the slider is movably disposed in the through groove, and is provided with a third blind hole and a through hole passing through the slider, the third blind hole is directly opposite the second blind hole in the through groove, and a planetary gear is connected to the through hole; the two ends of the helical spring are respectively inserted into the second blind hole and the third blind hole, and are in a compressed state.

[0009] In one optional embodiment of this disclosure, the brush head includes a mop holder and a mop, the mop holder and / or the mop being in the shape of a Reuleaux triangle, the center of the mop holder being connected to the center of a planetary gear, and the mop being detachably connected to the mop holder.

[0010] In one optional embodiment of this disclosure, the first end of the rotating rod is connected to the shaft of the motor, and the axis of the motor coincides with the rotation center line of the rotating rod.

[0011] In one optional embodiment of this disclosure, a gear transmission mechanism is further included; the first end of the rotating rod is connected to the rotating shaft of the motor via the gear transmission mechanism, and the rotation axes of the motor and the rotating rod are perpendicular to each other.

[0012] In one optional embodiment of this disclosure, the gear transmission mechanism includes: a worm gear coaxially connected to the rotating shaft of a motor; and a worm wheel meshing with the worm gear and rotatably connected to the first end of a rotating rod.

[0013] In one optional embodiment of this disclosure, the gear transmission mechanism includes: a worm gear coaxially connected to the rotating shaft of a motor; a double gear having a first gear ring and a second gear ring coaxially, the first gear ring of the double gear meshing with the worm gear; a transmission gear meshing with the second gear ring of the double gear, and a first end of a rotating rod rotatably connected to the transmission gear.

[0014] In one optional embodiment of this disclosure, there are two gear transmission mechanisms, two square gears, two rotating rods, two revolving gears, and two brush heads, and one motor; wherein, the two ends of the motor shaft are respectively connected to the two gear transmission mechanisms to drive the two brush heads to rotate synchronously.

[0015] According to a second aspect of the present disclosure, a cleaning apparatus is provided, which includes the floor brush described above.

[0016] The beneficial effects of this disclosure are at least as follows: the floor brush has a housing; a motor is housed inside the housing; a brush head is shaped like a Reuleaux triangle; a square gear is fixedly mounted on the housing; a rotating rod has a first end and a second end opposite to each other, the first end of the rotating rod is connected to the motor, and the rotating rod is provided with a slide rail extending linearly from the first end to the second end of the rotating rod; a revolving gear is movably mounted on the slide rail and can elastically reciprocate along the slide rail, the revolving gear is connected to the brush head and meshes with the square gear; when the motor rotates, it drives the rotating rod to rotate, and the rotating rod drives the revolving gear and the brush head to rotate together, and the revolving gear revolves around the square gear during its rotation, so that the trajectory of each corner of the brush head is a square, thereby achieving the effect of thoroughly cleaning the corners of the floor and walls. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a floor cleaning vacuum cleaner provided in an embodiment of the present disclosure;

[0019] Figure 2 This is a schematic diagram of the structure of a floor brush provided in an embodiment of the present disclosure;

[0020] Figure 3 This is an exploded view of the structure of a floor brush provided in an embodiment of this disclosure;

[0021] Figure 4 This is a schematic diagram of a structure for connecting a motor and a rotating rod according to an embodiment of the present disclosure;

[0022] Figure 5 This is a schematic diagram of a structure for connecting a motor and a gear transmission mechanism according to an embodiment of the present disclosure;

[0023] Figure 6 This is a schematic diagram of a motor connected to a rotating rod via a gear transmission mechanism, as provided in an embodiment of the present disclosure.

[0024] Figure 7 A schematic diagram of another motor connected to a rotating rod via a gear transmission mechanism, provided in an embodiment of this disclosure;

[0025] Figure 8 This is a schematic diagram of the structure of a square gear provided in an embodiment of the present disclosure;

[0026] Figure 9 This is an exploded view of the structure connecting a square gear to a housing, as provided in an embodiment of this disclosure.

[0027] Figure 10 This is a schematic diagram of the structure of a slider and a helical spring on a rotating rod provided in an embodiment of the present disclosure;

[0028] Figure 11 This is a partial cross-sectional view of a revolution gear elastically sliding on a rotating rod, provided as an embodiment of this disclosure.

[0029] The following are the labeling elements in the figure:

[0030] 1 shell 43 round hole 2 motor 51 slide rail 3 brush head 52 Second blind hole 4 square gear 71 Third blind hole 5 Rotating rod 72 Through hole 6 Revolutionary gear 73 Limiting edge 7 slider 91 worm gear 8 coil spring 92 worm gear 9 Gear transmission mechanism 93 Double gear 11 First blind hole 94 Transmission gears 31 mop holder 931 First gear ring 32 mop 932 Second gear ring 41 square board 100 floor brush 42 cylinder 200 floor cleaning vacuum cleaner Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this disclosure clearer, the disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this disclosure and are not intended to limit this disclosure.

[0032] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0033] It should be noted that the floor brush in this embodiment can be applied to cleaning devices such as floor vacuum cleaners, electric mops, and floor scrubbers. Preferably, this disclosure describes the technical solution in detail by applying the floor brush to a floor vacuum cleaner, so that those skilled in the art can better understand and implement the technical solution of this disclosure.

[0034] For example, see Figure 1 This disclosure provides a floor cleaning vacuum cleaner 200, which includes at least one floor brush 100.

[0035] Please see Figure 2 and 3 This disclosure provides a floor brush 100, comprising: a housing 1; a motor 2 disposed within the housing 1; a brush head 3 shaped like a Reuleaux triangle; a square gear 4 fixedly disposed on the housing 1; a rotating rod 5 having a first end and a second end opposite to each other, the first end of the rotating rod 5 being connected to the motor 2, and a slide rail 51 extending linearly from the first end to the second end of the rotating rod 5; and a revolving gear 6 movably disposed on the slide rail 51 and capable of elastic reciprocating along the slide rail 51, the revolving gear 6 being connected to the brush head 3 and meshing with the square gear 4; when the motor 2 rotates, it drives the rotating rod 5 to rotate, and the rotating rod 5 drives the revolving gear 6 and the brush head 3 to rotate together, and the revolving gear 6 simultaneously revolves around the square gear 4 during its rotation.

[0036] The Reuleaux triangle, also known as the "Ruleaux triangle," "Ruleaux triangle," or "circular arc triangle," is a curvilinear triangle composed of three arcs, each with a vertex of an equilateral triangle as its center and a side length as its radius.

[0037] The working principle of the floor brush 100 provided in this embodiment is as follows: the shape of the brush head 3 is designed as a Reuleaux triangle. According to the Reuleaux triangle rotation principle, when the brush head 3 rotates in a square with a side length equal to its width, the trajectory of each corner of the brush head 3 is a square, thereby achieving the purpose of cleaning the corners of the floor.

[0038] The floor brush 100 provided in this embodiment consists of a housing 1; a motor 2, housed inside the housing 1; a brush head 3, shaped like a Reuleaux triangle; a square gear 4, fixedly mounted on the housing 1; a rotating rod 5, having a first end and a second end opposite to each other, the first end of the rotating rod 5 being connected to the motor 2; a slide rail 51 extending linearly from the first end to the second end of the rotating rod 5; and a revolving gear 6, movably mounted on the slide rail 51 and capable of elastic reciprocating along the slide rail 51. The revolving gear 6 is connected to the brush head 3 and meshes with the square gear 4. When the motor 2 rotates, it drives the rotating rod 5 to rotate, causing the revolving gear 6 and the brush head 3 to rotate together. During its rotation, the revolving gear 6 simultaneously revolves around the square gear 4, ensuring that the trajectory of each corner of the brush head 3 is a square, thereby achieving the effect of thoroughly cleaning the corners of the floor and walls.

[0039] In one embodiment, such as Figure 3 As shown, the brush head 3 includes a mop holder 31 and a mop 32. The shape of the mop holder 31 and / or the mop 32 is a Reuleaux triangle. The center of the mop holder 31 is connected to the center of the orbital gear 6, and the mop 32 is detachably connected to the mop holder 31.

[0040] Specifically, the shape of the mop 32 can be designed as a Reuleaux triangle, or the shape of the mop holder 31 can be designed as a Reuleaux triangle, or both the shape of the mop 32 and the mop holder 31 can be designed as Reuleaux triangles. Preferably, in this embodiment, both the shape of the mop holder 31 and the mop 32 are Reuleaux triangles, so that the edges and corners of the mop 32 can reach the corners of the wall when it rotates, thereby cleaning the corners.

[0041] In this embodiment, the mop holder 31 and the mop 32 are detachably connected by means of adhesive bonding or snap-fitting. When the mop 32 is used up, it can be removed from the mop holder 31 for cleaning.

[0042] In addition, such as Figure 3As shown, the motor 2 is located above the housing 1, and the brush head 3, square gear 4, rotating rod 5, and planetary gear 6 are located below the housing 1. Specifically, the motor 2 can be directly connected to the first end of the rotating rod 5, or it can be connected to the first end of the rotating rod 5 through a transmission mechanism.

[0043] In one embodiment, please refer to Figure 4 The motor 2 is directly connected to the first end of the rotating rod 5, which can be specifically implemented as follows: the first end of the rotating rod 5 is connected to the rotating shaft of the motor 2, and the axis of the motor 2 coincides with the rotation center line of the rotating rod 5.

[0044] It is worth mentioning that in this embodiment, the rotation centers of the motor 2 and the rotating rod 5 are on the same straight line. In this driving method that is directly connected to the motor 2, if the two rotating rods 5 are to be driven to rotate synchronously on the same plane, each of the two motors 2 needs to drive one rotating rod 5.

[0045] In another embodiment, please refer to Figure 5 , 6 In addition to 7, the brush 100 also includes a gear transmission mechanism 9. The motor 2 is connected to the first end of the rotating rod 5 through the transmission mechanism. Specifically, the first end of the rotating rod 5 is connected to the rotating shaft of the motor 2 through the gear transmission mechanism 9, and the rotation axes of the motor 2 and the rotating rod 5 are perpendicular to each other.

[0046] It is worth mentioning that in this embodiment, the rotation of the motor 2 in the direction of the shaft is converted into rotation perpendicular to the direction of the shaft by the gear transmission mechanism 9. Therefore, if two rotating rods 5 are to be driven to rotate synchronously on the same plane, only one rotating rod 5 needs to be driven by each end of the shaft of the motor 2. Therefore, in scenarios where multiple rotating rods 5 (e.g., two rotating rods 5) need to be driven to rotate synchronously at the same time, the transmission method of this embodiment is more economical.

[0047] The implementation of the gear transmission mechanism 9 is not unique; any method that can convert the rotation of the motor 2 in the direction of the shaft to rotation perpendicular to the shaft direction is acceptable. Two specific embodiments are given below.

[0048] In one embodiment, such as Figure 6 As shown, the gear transmission mechanism 9 includes: a worm 91, which is coaxially connected to the rotating shaft of the motor 2; and a worm wheel 92, which meshes with the worm 91 and is rotatably connected to the first end of the rotating rod 5.

[0049] Specifically, the worm 91 and the worm wheel 92 form a worm gear 91 transmission, which is used to transmit motion and power between two intersecting shafts. In this embodiment, the worm gear 91 transmission is used to convert the power of the motor 2 on the axial direction into the power on the vertical axis, so as to achieve the effect of a single motor 2 driving at least two rotating rods 5 to rotate simultaneously.

[0050] In another embodiment, such as Figure 5 , Figure 7 As shown, the gear transmission mechanism 9 includes: a worm 91, coaxially connected to the rotating shaft of the motor 2; a double gear 93, having a coaxial first gear ring 931 and a second gear ring 932, the first gear ring 931 of the double gear 93 meshing with the worm 91; a transmission gear 94, meshing with the second gear ring 932 of the double gear 93, and the first end of the rotating rod 5 being rotatably connected to the transmission gear 94.

[0051] It is worth mentioning that in this embodiment, the worm 91 is the driving gear, and the first gear ring 931 of the double gear 93 is the driven gear. The number of teeth on the worm 91 is generally less than the number of teeth on the first gear ring 931, effectively creating a smaller gear driving a larger one, allowing the driven gear to obtain a larger torque. Furthermore, the second gear ring 932 of the double gear 93 is the driving gear, and the transmission gear 94 is the driven gear. The number of teeth on the transmission gear 94 is greater than the number of teeth on the second gear ring 932, again creating a smaller gear driving a larger one. Therefore, the gear transmission mechanism 9 in this embodiment can obtain a larger torque by amplifying the torque at each stage, and it is more stable than the structure of the worm 91 transmission.

[0052] Furthermore, when the motor 2 is connected to the first end of the rotating rod 5 via a gear transmission mechanism 9, the motor 2 can simultaneously drive both rotating rods 5 to rotate in the same plane. In other words, a single motor 2 can simultaneously drive two brush heads 3 to rotate.

[0053] In one embodiment, such as Figure 7 As shown, when two brush heads 3 need to rotate simultaneously, the floor brush 100 contains two gear transmission mechanisms 9, two square gears 4, two rotating rods 5, two revolving gears 6, and two brush heads 3, while there is only one motor 2. The two ends of the motor 2's shaft are connected to two gear transmission mechanisms 9 to drive the two brush heads 3 to rotate synchronously. Each gear transmission mechanism 9 is connected to a rotating rod 5, and each rotating rod 5 has a revolving gear 6. Each revolving gear 6 meshes with a directional gear and is connected to one brush head 3. Specifically, when the motor 2 rotates, it can achieve the effect of synchronously driving the two brush heads 3 to rotate. Furthermore, through the gear ratio design of the gear transmission mechanism 9, the brush heads 3 can obtain a larger torque, thereby enhancing their cleaning ability. This embodiment effectively expands the cleaning area and improves cleaning efficiency by using a single motor to drive two brush heads 3.

[0054] In one embodiment, see Figure 8 and 9The square gear 4 includes a square plate 41 and a plurality of cylinders 42. One end of the plurality of cylinders 42 is perpendicularly connected to the edge of one side of the square plate 41 in the thickness direction. The cylinders 42 are spaced apart from each other and the spacing is equal. The outer shell 1 is provided with a first blind hole 11 corresponding to the plurality of cylinders 42. The other end of the plurality of cylinders 42 is inserted into the first blind hole 11.

[0055] The cylinder 42 on the square plate 41 serves as a gear tooth, meshing with the planetary gear 6. Furthermore, as... Figure 8 As shown, a circular hole 43 is provided in the middle of the square plate 41, and the other end of the cylinder 42 is inserted into the second blind hole 52 provided on the outer shell 1, so that the square gear 4 cannot move relative to the outer shell 1. The rotating rod 5 is connected to the motor 2 or the gear transmission structure 9 through the circular hole 43. The square gear 4 is provided between the rotating rod 5 and the outer shell 1 to achieve the effect of fixing the square gear 4 on the outer shell 1.

[0056] In this embodiment, a square gear 4 is used as the rotation trajectory of the revolving gear 6, so that the revolving trajectory of the brush head 3 connected to the revolving gear 6 is square, allowing the Reuleaux triangle-shaped brush head 3 to reach the corner of the wall during rotation, thereby cleaning the corner of the wall.

[0057] In one embodiment, see Figure 10 and 11 The slide rail 51 is a through groove that passes through the rotating rod 5. A second blind hole 52 is provided on the side wall of the groove near the second end of the rotating rod 5. The floor brush 100 also includes a slider 7 and a helical spring 8. The slider 7 is movably disposed in the through groove and is provided with a third blind hole 71 and a through hole 72 passing through the slider 7. The third blind hole 71 is directly opposite the second blind hole 52 in the through groove. The planetary gear 6 is connected to the through hole 72. The two ends of the helical spring 8 are respectively inserted into the second blind hole 52 and the third blind hole 71 and are in a compressed state.

[0058] The method by which slider 7 slides within the through slot is not unique. For example, as... Figure 11 As shown, the slider 7 is provided with a limiting edge 73. The limiting edge 73 is located on the edge of the groove sidewall on one or both sides of the through groove. That is to say, the limiting edge 73 expands the width of the slider 7, so that the maximum width of the slider 7 is greater than the width of the through groove. Thus, only part of the slider 7 is accommodated in the through groove, and the remaining part of the limiting edge 73 is left on the edge of the groove sidewall outside the through groove.

[0059] For example, the slider 7 is provided with a limiting edge 73, and the side wall of the through groove is provided with a limiting groove to accommodate the limiting edge 73. Figure 10 and 11 (Not shown), the limiting edge 73 is provided in the limiting groove, so that the slider 7 slides in the through groove without falling out of the through groove.

[0060] Furthermore, since the helical spring 8 is always in a compressed state, when the motor 2 is not working, the slider 7 is stationary, and the elastic force generated by the compression of the helical spring 8 presses the slider 7 tightly into the slide rail 51 near the first end of the rotating rod 5. When the motor 2 is working, it drives the rotating rod 5 to rotate, thereby driving the slider 7 on the slide rail 51 and the planetary gear 6 on the slider 7 to rotate together. During the rotation, since the planetary gear 6 rotates around the square gear 4, the rotation trajectory of the planetary gear 6 is square. Therefore, the planetary gear 6 will drive the slider 7 to move back and forth regularly along the slide rail 51 during the rotation around the square gear 4, and during the reciprocating movement, it is always subjected to the elastic force generated by the compression of the helical spring 8. This elastic force pushes the slider 7 towards the center of rotation, so that the planetary gear 6 connected to the slider 7 is always meshed with the square gear 4.

[0061] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A floor brush characterized in that, The application relates to a floor brush. The floor brush comprises a housing, a motor arranged in the housing, a brush head shaped as a Luer triangle, a square gear fixedly arranged on the housing, a rotating rod with opposite first and second ends, the first end of the rotating rod being connected with the motor, a slide rail extending straight from the first end to the second end of the rotating rod, a revolving gear movably arranged on the slide rail and elastically reciprocating along the slide rail, the revolving gear being connected with the brush head and engaged with the square gear, when the motor rotates, the rotating rod is driven to rotate, the rotating rod drives the revolving gear and the brush head to rotate, and the revolving gear revolves around the square gear in the process of rotating. The slide rail is a through groove penetrating the rotating rod, and a second blind hole is arranged on the groove side wall close to the second end of the rotating rod. The floor brush further comprises a sliding block and a spiral spring, the sliding block is movably arranged in the through groove and is provided with a third blind hole and a through hole penetrating the sliding block, the third blind hole is opposite to the second blind hole in the through groove, and the revolving gear is connected with the through hole; the two ends of the spiral spring are respectively inserted into the second blind hole and the third blind hole and are in a compressed state. The square gear comprises a square plate and a plurality of cylinders, one end of each cylinder is perpendicularly connected to the edge on one side of the square plate in the thickness direction, and the cylinders are spaced apart from each other and have equal spacing. A first blind hole corresponding to the plurality of cylinders is arranged in the housing, and the other end of each cylinder is inserted into the first blind hole. The brush head comprises a mop support and a mop, the mop support and / or the mop are shaped as a Luer triangle, the center of the mop support is connected with the center of the revolving gear, and the mop is detachably connected with the mop support. The first end of the rotating rod is connected with the rotating shaft of the motor, and the axis of the motor is coincident with the rotating center line of the rotating rod. The floor brush further comprises a gear transmission mechanism. The first end of the rotating rod is drivingly connected with the rotating shaft of the motor through the gear transmission mechanism, and the motor is perpendicular to the rotating axis of the rotating rod.

2. The floor brush of claim 1 wherein, The gear transmission mechanism comprises a worm coaxially connected with the rotating shaft of the motor, and a worm wheel engaged with the worm and drivingly connected with the first end of the rotating rod. The gear transmission mechanism comprises a worm coaxially connected with the rotating shaft of the motor, a double gear with coaxial first and second gear rings, the first gear ring of the double gear being engaged with the worm, and a transmission gear engaged with the second gear ring of the double gear and drivingly connected with the first end of the rotating rod.

3. The floor brush of claim 1 wherein, The number of the gear transmission mechanism, the square gear, the rotating rod, the revolving gear and the brush head is two, and the number of the motor is one.

4. The floor brush of any one of claims 1-3, wherein, The rotating shafts of the motor are respectively drivingly connected with the two gear transmission mechanisms to drive the two brush heads to synchronously rotate.

5. The floor brush of any one of claims 1-3, wherein, The floor brush is described in any one of claims 1-8. The floor brush is described in any one of claims 1-8.

6. The floor brush of claim 5 wherein, ​ ​ ​ 7. The floor brush of claim 5 wherein, ​ ​ ​ ​ 8. The floor brush of claim 7 wherein, ​ ​ 9. A cleaning device characterized by ​

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