Electric cleaning brush

Abstract

The electric cleaning brush involved in the present invention includes a hand rod, a connecting member connected to one end of the hand rod, and a roller brush mounted on the connecting member. The part of the roller brush in contact with the surface to be cleaned deforms radially inward under the action of an external force. The electric cleaning brush further includes two support plates fixed on the connecting member. The two support plates are respectively arranged on both sides of the roller brush. The support plate has a limiting part located on one side of the end face of the roller brush and with an arc-shaped outer contour. In the axial direction of the roller brush, the projection of the limiting part is located within the end face of the roller brush, and the projection of the limiting part forms a first line within the end face of the roller brush. The distances between the first line and the side edges of the end face of the roller brush are not equal. This electric cleaning brush can automatically adjust the maximum effective working length of the bristles. Even if the hand rod is lifted too high or the pressure applied to the hand rod is too large, the electric cleaning brush will not generate excessive or rapid frictional force, reaction kick force or reverse walking stroke, improving its ease of use and increasing the cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to a cleaning brush, in particular to an electric cleaning brush applied to the field of household cleaning and maintenance. Background Art

[0002] All existing roller brush type cleaning brushes control the effective working length of the bristles in contact with the surface to be cleaned and the friction force between the bristles and the ground by the operator changing the pressure applied to the cleaning brush. During the reverse rotation operation of the power-driven roller brush, when the handle of the cleaning brush is lifted too high, a large back kick force is likely to occur. The friction force generated between the bristles and the ground is uncontrollable and the cleaning brush may get stuck. The usability of such cleaning brushes is very poor, making the daily cleaning work cumbersome, increasing the workload and reducing the cleaning efficiency. Therefore, it is highly necessary to design a new type of roller brush type cleaning brush that can solve this problem. Summary of the Invention

[0003] The purpose of the present invention is to provide an electric cleaning brush with an effective working length of the bristles that can be adaptively adjusted to control the friction force between the bristles and the ground, effectively preventing the cleaning brush from generating an excessive back kick force and having strong usability.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An electric cleaning brush includes a handle, a connecting member connected to one end of the handle, and a roller brush mounted on the connecting member. The part of the roller brush in contact with the surface to be cleaned deforms radially inward under the action of an external force. The electric cleaning brush further includes two support plates fixed on the connecting member. The two support plates are respectively arranged on both sides of the roller brush. The support plate has a limiting portion located on one side of the end face of the roller brush and having an arc-shaped outer contour. In the axial direction of the roller brush, the projection of the limiting portion is located within the end face of the roller brush, and the projection of the limiting portion forms a first line within the end face of the roller brush. The distance between the first line and the side edge of the end face of the roller brush is not equal.

[0005] Further, the limiting portion has a first end that can come into contact with the surface to be cleaned, and the projection of the first end is the part of the first line that is relatively shorter in distance from the side edge of the end face of the roller brush.

[0006] Further, the distance between the first line and the side edge of the end face of the roller brush gradually increases upward from the projection of the first end.

[0007] Further, the outer contour of the first end is generally an arc-shaped structure.

[0008] Further, the roller brush is rotatably fixed between the two support plates.

[0009] Further, the rotary brush is rotatably fixed on the clamping member, and one end of the clamping member is fixedly arranged on the connecting member.

[0010] Further, when the angle between the hand rod and the surface to be cleaned changes, the contact point between the limiting part and the surface to be cleaned also changes accordingly.

[0011] Further, the limiting part is connected to the support plate through an elastic element.

[0012] Further, the elastic element is specifically a spring.

[0013] Further, the limiting part has an arc section that can contact the surface to be cleaned.

[0014] Further, when the elastic element is stressed and contracts or elongates, the limiting part can move relative to the surface to be cleaned.

[0015] Further, the rotary brush is rotatably fixed on the clamping member, and one end of the clamping member is fixedly arranged on the connecting member.

[0016] Further, one end of the hand rod away from the connecting member is connected to a power source, and the connecting member includes a driving motor.

[0017] The beneficial effects of the present invention are as follows: The electric cleaning brush provided by the present invention can automatically adjust the maximum effective working length of the bristles to achieve the effect of controlling the friction between the bristles and the ground, effectively preventing the electric cleaning brush from generating excessive kicking force, meeting the user's requirement of having a smaller kicking force when using a reverse rotary brush type electric cleaning brush for cleaning work, especially maintaining good stability even when cleaning a rough surface. Even if the hand rod of the electric cleaning brush is lifted too high or the pressure applied to the electric cleaning brush is too large, the electric cleaning brush will not generate a large or rapid friction force, kicking force or reverse walking stroke, improving the usability of the electric cleaning brush and increasing the cleaning efficiency.

[0018] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following takes the preferred embodiment of the present invention and combines with the attached drawings to describe in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the electric cleaning brush shown in the first embodiment of the present invention;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the electric cleaning brush in another direction in

[0021] Figure 3Schematic diagram of the use of the first preferred solution in the first embodiment;

[0022] Figure 4 Schematic diagram of the use of the second preferred solution in the first embodiment;

[0023] Figure 5 Schematic diagram of the use of the third preferred solution in the first embodiment;

[0024] Figure 6 Schematic diagram of the structure of the electric cleaning brush shown in the second embodiment of the present invention

[0025] Figure 7 is Figure 6 Schematic diagram of the structure of the electric cleaning brush in another direction in Detailed implementation manners

[0026] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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 elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Please refer to Figure 1 and Figure 2, the electric cleaning brush 10 shown in the first embodiment of the present invention includes a hand rod 11, a connecting member 12 connected to one end of the hand rod 11, a rotary brush 13 mounted on the connecting member 12, and two support plates 14 fixed to the connecting member 12. The support plates 14 can support and fix the rotary brush 13 and connect it to the connecting member 12. Both the connecting member 12 and the rotary brush 13 are located on the central axis of the hand rod 11. In this embodiment, the central axis of the hand rod 11 can be called the first central axis. In Figure 1 it is labeled as x.

[0031] The hand rod 11 is in the shape of a slender rod, and a power source is connected to the end away from the connecting member. The connecting member 12 includes a cylinder 121 and a frustum-like cone 122 provided on the semi-cylindrical wall of the cylinder 121. The end with a larger cross-section of the frustum-like cone 122 is fixed to the cylinder 121, and the end with a smaller cross-section of the frustum-like cone 122 is fixedly connected to the hand rod 11. A drive motor (not shown) for driving the rotary brush 13 to perform a rotary operation is further provided in the connecting member 12. One of the support plates 14 is provided with a transmission mechanism (not shown) for transmitting the rotational force of the drive motor to the rotary brush 13.

[0032] The rotary brush 13 is of a cylindrical structure. The rotary brush 13 includes a roller shaft (not shown), a drum (not shown) sleeved on the roller shaft for rolling on the surface to be cleaned, and a brush layer (not shown) covering the drum wall. The brush layer forms a cylindrical structure, and the brush layer is fixed on the drum and rolls synchronously with the drum. The part of the brush layer in contact with the surface to be cleaned deforms radially inward along the rotary brush 13 under the action of an external force, and the bristles on the brush layer form a cleaning part in contact with the surface to be cleaned, so as to clean the surface to be cleaned in contact with the bristles.

[0033] Two completely identical support plates 14 are arranged parallel to each other face to face, and the two support plates 14 are symmetrically arranged on both sides of the rotary brush respectively. The support plate 14 has a limiting part 141 and a fixing part 142. The limiting part 141 and the fixing part 142 integrally extend to form the support plate 14. The limiting parts 141 of the two support plates 14 are symmetrically arranged on both sides of the rotary brush 13, and the fixing parts 142 of the two support plates 14 are symmetrically fixed on both sides of the connecting piece 12. The outer contour of the fixing part 142 includes a rectangular structure and a semi-circular structure connected to one end of the short side of the rectangle. The outer contour of the limiting part 141 is an irregular arc structure. In the axial direction of the rotary brush 13, the projection of the limiting part 141 is located within the end face of the rotary brush 13. The projection of the limiting part 141 forms a first line within the end face of the rotary brush 13. The distances between the first line and the side edges of the end face of the rotary brush 13 are not equal. The limiting part 141 limits the amount of deformation of the rotary brush 13 concave inward in the radial direction under the action of an external force. The limiting part 141 has a first end 1411, and the first end 1411 can be in direct contact with the cleaning surface. The projection of the first end 1411 on the end face of the rotary brush 13 is the part of the first line that is relatively shorter in distance from the side edge of the end face of the rotary brush 13. In the axial direction of the rotary brush 13, the projection of the first end 1411 is located on the first central axis x. The distance between the first line and the side edge of the end face of the rotary brush 13 gradually increases upward from the projection of the first end 1411. The effective working length of the bristles of the electric cleaning brush 10 is the distance from the part where the brush layer contacts the cleaning surface to the first line in the direction perpendicular to the cleaning surface. The parts where the brush layer contacts the cleaning surface are different, so the effective working length of the bristles is different. In the electric cleaning brush 10 shown in this embodiment, the effective working length of the bristles can be changed according to the change of the part where the brush layer contacts the cleaning surface, so as to change the cleaning part formed by the bristles on the brush layer contacting the cleaning surface, thereby changing the frictional force generated when the electric cleaning brush 10 contacts the cleaning surface, and improving the practicability and ease of use of the electric cleaning brush 10.

[0034] In this embodiment, the projections of the limiting part 141 on both sides of the first central axis x in the end face of the rotary brush 13 are asymmetrically arranged. In other embodiments, the projections of the limiting part 141 on both sides of the first central axis x in the end face of the rotary brush 13 can be symmetrically arranged. For this electric cleaning brush 10, the distances between the first line and the side edges of the end face of the rotary brush 13 gradually increase upward from the projection point of the first end 1411 to the outer sides of both end faces, and the distances between the first lines on both sides and the side edges of the end face of the rotary brush 13 increase synchronously.

[0035] In this embodiment, the connection mode between the rotary brush 13 and the connecting member 12 is that the rotary brush 13 is rotatably fixed between two support plates 14. Specifically, the roller shaft is fixed between two support plates 14, and the two support plates 14 are symmetrically fixed on both sides of the connecting member 12. In other embodiments, the connection mode between the rotary brush 13 and the connecting member 12 may be that the rotary brush 13 is rotatably fixed on a clamping member (not shown), and one end of the clamping member is fixedly arranged on the connecting member 12. Specifically, the roller shaft is fixed to the clamping member, one end of the clamping member is fixedly arranged on the connecting member 12, the two support plates 14 are symmetrically fixed on both sides of the connecting member 12, and the limiting portions 141 of the two support plates 14 are located outside the two end faces of the rotary brush 13.

[0036] In the electric cleaning brush 10 shown in this embodiment, the contact position between the brush layer and the surface to be cleaned can be changed by controlling the angle between the first central axis x where the hand rod 11 is located in the rolling direction and the ground, so as to change the effective working length of the bristles. Specifically, please refer to Figure 3 , when in the rolling direction, the angle between the first central axis x where the hand rod 11 is located and the ground is 30°, the maximum effective working length a of the bristles is 10 mm; please refer to Figure 4 , when in the rolling direction, the angle between the first central axis x where the hand rod 11 is located and the ground is 45°, the maximum effective working length b of the bristles is 13 mm; please refer to Figure 5 , when in the rolling direction, the angle between the first central axis x where the hand rod 11 is located and the ground is 70°, the maximum effective working length c of the bristles is 4 mm; when in the rolling direction, the angle between the first central axis x where the hand rod 11 is located and the ground is 80°, the maximum effective working length of the bristles is 2 mm (not shown). When this electric cleaning brush 10 works, even if the hand rod 11 is lifted too high and the angle between the first central axis x where the hand rod 11 is located and the ground in the rolling direction is too large, because the corresponding maximum effective working length of the bristles becomes smaller, the friction force generated between the brush layer and the surface to be cleaned will not cause the electric cleaning brush 10 to reverse, ensuring the stability and practicability of the electric cleaning brush 10.

[0037] Please refer to Figure 6 and Figure 7 , the electric cleaning brush 20 shown in the second embodiment of the present invention includes a hand rod 21, a connecting member 22 connected to one end of the hand rod 21, a rotary brush 23 installed on the connecting member 22, and two support plates 24 fixed on the connecting member 22. The connecting member 22 and the support plates 24 are located on the central axis of the hand rod 21. In this embodiment, the central axis of the hand rod 21 can be called the second central axis, and the label is y in Figure 5 . The hand rod 21, the connecting member 22, the rotary brush 23, and the driving method for the rotary brush 23 to rotate in this embodiment are the same as those shown in the first embodiment, and will not be described in detail here.

[0038] Two completely identical support plates 24 are arranged parallel to each other face to face. The support plate 24 has a limiting portion 241 and a fixing portion 242. The limiting portion 241 and the fixing portion 242 are connected by an elastic member 243 to form the support plate 24. The limiting portions 241 of the two support plates 24 are symmetrically arranged on both sides of the rolling brush 23, and the fixing portions 242 of the two support plates 24 are symmetrically fixed on both sides of the connecting member 22. The outer contour of the fixing portion 242 includes a rectangular structure and a semi-circular structure connected to one end of the short side of the rectangle. The outer contour of the limiting portion 241 has an arc portion that can contact the surface to be cleaned. The arc portion is a 1 / 2 semi-circular structure. The limiting portion 241 limits the amount of deformation of the rolling brush 23 concave inward in the radial direction under the action of an external force. In the rolling direction, the projection of the limiting portion 241 is located within the end face of the rolling brush 23. The projection of the limiting portion 241 forms a second line within the end face of the rolling brush 23, and the axis of the second line intersects and is perpendicular to the second central axis y of the hand rod 21. In this embodiment, the elastic member 243 is a spring.

[0039] In this embodiment, the connection method between the rolling brush 23 and the connecting member 22 can be: the rolling brush 23 is rotatably fixed on a clamping member (not shown), and one end of the clamping member is fixedly arranged on the connecting member 22. Specifically, a clamping member is fixed on the rolling shaft, one end of the clamping member is fixedly arranged on the connecting member 22, two support plates 24 are symmetrically fixed on both sides of the connecting member 22, and the limiting portions 241 of the two support plates 24 are located outside the two end faces of the rolling brush 23.

[0040] The effective working length of the bristles of the electric cleaning brush 20 is the distance from the part where the brush layer contacts the surface to be cleaned to the second line in the direction perpendicular to the surface to be cleaned. The change in the position of the second line drives the change in the effective working length of the bristles. When the electric cleaning brush 20 contacts the surface to be cleaned and works under pressure applied to the electric cleaning brush 20, the limiting portion 241 moves relative to the rolling brush 23 under the action of the surface to be cleaned, and the moving direction is the same as the direction of the central axis of the hand rod 21, that is, the second central axis y. Specifically, when no pressure is applied to this electric cleaning brush 20, the spring is in its original state. When pressure is applied to the electric cleaning brush 20, the rolling brush 23 is squeezed and deformed under the action of the surface to be cleaned. The limiting portion 241 contacts the surface to be cleaned, and under the action of the surface to be cleaned, the spring undergoes compressive deformation, driving the limiting portion 241 to move relative to the rolling brush 23. The projection of the limiting portion 241 moves in the direction of the second central axis y of the hand rod 21, the position of the second line changes, and thus the effective working length of the bristles of the electric cleaning brush 20 changes. When different pressures are applied to the electric cleaning brush 20, the spring undergoes different compressive deformations, the projection of the limiting portion 241 moves different distances in the direction of the second central axis y of the hand rod 21, the change in the position of the second line is different, and different effective working lengths of the bristles are produced.

[0041] The effective working length of the bristles of the electric cleaning brush 20 shown in this embodiment can be changed according to the change in the pressure applied to the electric cleaning brush 20, so as to change the frictional force generated when the electric cleaning brush 20 contacts the surface to be cleaned. When the pressure applied to the electric cleaning brush 20 is too large, due to the limiting portion 241 restricting the amount of deformation of the rotary brush 23 concave inward in the radial direction under the action of an external force, the effective working length of the bristles is restricted, and the electric cleaning brush 20 generates a smaller frictional force and a smaller reaction kick force when contacting the surface to be cleaned. This electric cleaning brush 20 can change the effective working length of the bristles according to actual needs, so as to change the frictional force generated when the electric cleaning brush 20 contacts the surface to be cleaned, and improve the practicability and ease of use of the electric cleaning brush 20.

[0042] The structures for adjusting the maximum effective working length of the bristles shown in the first and second embodiments can be applied not only to the manual cleaning brushes in the first and second embodiments, but also to AC and DC electric cleaning brushes.

[0043] In summary, the electric cleaning brushes 10 and 20 provided by the present invention can automatically adjust the maximum effective working length of the bristles to achieve the effect of controlling the frictional force between the bristles and the ground, effectively preventing the electric cleaning brushes 10 and 20 from generating excessive reaction kick forces, meeting the user's requirement of having a smaller reaction kick force when using the reverse rotary brush type electric cleaning brushes 10 and 20 for cleaning work, especially maintaining good stability even when cleaning a rough surface. Even if the handle of the electric cleaning brushes 10 and 20 is lifted too high or the pressure applied to the electric cleaning brushes 10 and 20 is too large, the electric cleaning brushes 10 and 20 will not generate a large or rapid frictional force, reaction kick force or reverse walking stroke, improving the ease of use of the electric cleaning brushes 10 and 20 and increasing the cleaning efficiency.

[0044] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0045] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. An electric cleaning brush, the electric cleaning brush comprising a hand rod, a connecting member connected to one end of the hand rod, and a roller brush mounted on the connecting member, a portion of the roller brush in contact with the surface to be cleaned being deformed radially inward under the action of an external force. Characterized in that: The electric cleaning brush further comprises two support plates fixed on the connecting member, the two support plates being respectively arranged on both sides of the roller brush, the support plates having a limiting portion located on one side of the end face of the roller brush and having an arc-shaped outer contour; in the axial direction of the roller brush, the projection of the limiting portion is located within the end face of the roller brush, and the projection of the limiting portion forms a first line within the end face of the roller brush; the limiting portion has a first end that can come into contact with the surface to be cleaned, and the projection of the first end is the portion of the first line that is relatively shorter in distance from the side edge of the end face of the roller brush, and the distance between the first line and the side edge of the end face of the roller brush gradually increases upward from the projection of the first end. When the angle between the hand rod and the surface to be cleaned changes, the contact point between the limiting portion and the surface to be cleaned also changes accordingly.

2. The electric cleaning brush according to claim 1, Characterized in that: The outer contour of the first end is generally an arc-shaped structure.

3. The electric cleaning brush according to claim 1, Characterized in that: The roller brush is rotatably fixed between the two support plates.

4. The electric cleaning brush according to claim 1, Characterized in that: The roller brush is rotatably fixed on a clamping member, and one end of the clamping member is fixedly arranged on the connecting member.

5. The electric cleaning brush according to any one of claims 1-4, Characterized in that: One end of the hand rod away from the connecting member is connected to a power source, and the connecting member includes a drive motor.

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