A surface cleaning device with good cleaning effect

Abstract

This invention provides a surface cleaning device with good cleaning effect, including a body and a cleaning roller with bristles. The cleaning roller forms a friction cleaning surface by pressing against the surface to be cleaned. The surface cleaning device also includes a bristle-lifting component, which is disposed behind the friction cleaning surface in the rotation direction of the cleaning roller to lift up the bristles that have been flattened by the surface to be cleaned. By providing a bristle-lifting component on the surface cleaning device, this invention can straighten the bristles on the cleaning roller that have been flattened by the surface to be cleaned, thereby increasing the fluffiness of the bristles and enhancing the cleaning roller's ability to clean dirt from the surface to be cleaned.

Description

Technical Field

[0001] This invention belongs to the field of cleaning equipment technology, and specifically provides a surface cleaning device with good cleaning effect. Background Technology

[0002] A surface cleaning device is a tool used to clean surfaces (such as floors, carpets, or tabletops), including handheld and self-propelled surface cleaning devices. Handheld surface cleaning devices typically include a cleaning head and a handle pivotally connected to it. Some handheld surface cleaning devices on the market now feature a rotating cleaning roller on the cleaning head, allowing the device to clean the surface using this roller.

[0003] However, when the cleaning roller comes into contact with the surface to be cleaned and performs the cleaning work, the bristles on the cleaning roller are inevitably squeezed by the surface to be cleaned and tilted in the same direction, causing the bristles to stick to the cleaning roller. This reduces the bristles' ability to absorb dirt from the ground and affects the cleaning effect of the surface cleaning device on the surface to be cleaned. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, specifically the issue that existing surface cleaning devices cannot effectively clean the surface after the bristles of the cleaning roller are scraped down and adhere to the cleaning roller, the present invention provides a surface cleaning device with good cleaning effect. The device includes a body and a cleaning roller with bristles. The cleaning roller forms a friction cleaning surface due to pressure against the surface to be cleaned. The surface cleaning device also includes a bristle-lifting component, which is positioned behind the friction cleaning surface in the rotational direction of the cleaning roller to lift up the bristles scraped down by the surface to be cleaned.

[0005] Preferably, the machine body further includes a scraping component, which is disposed between the friction cleaning surface and the bristle-forming assembly in the rotation direction of the cleaning roller, and the scraping component scrapes the bristles on the rotating cleaning roller to remove dirt.

[0006] Preferably, the length of the scraping member in the axial direction of the cleaning roller is not less than the length of the cleaning roller.

[0007] Preferably, the brushing assembly includes a brush roller that rolls in contact with the cleaning roller and rotates in the opposite direction.

[0008] Preferably, the bristle-lifting assembly includes a spraying member that sprays liquid onto the cleaning roller, the spraying direction of the spraying member being consistent with the rotation direction of the cleaning roller, so that the liquid flow can lift the bristles that have been scraped down on the cleaning roller.

[0009] Preferably, the support roller is arranged parallel to the cleaning roller and in contact with the surface to be cleaned; or,

[0010] The rotation center axis of the support roller is higher than that of the cleaning roller, and the radius of the support roller is smaller than that of the cleaning roller.

[0011] Preferably, the rotational speed of the support roller is greater than the rotational speed of the cleaning roller.

[0012] Preferably, the roller includes a roller body and bristles, silicone strips, teeth and / or bosses disposed on the surface of the roller body.

[0013] Preferably, the machine body is further provided with a liquid supply component pointing towards the cleaning roller, and the support roller is located between the liquid supply component and the scraping component in the rotation direction of the cleaning roller.

[0014] Preferably, the bristles of the cleaning roller include soft bristles and hard bristles, with the hard bristles serving at least to support the soft bristles.

[0015] Those skilled in the art will understand that the aforementioned surface cleaning device with good cleaning effect has at least the following beneficial effects:

[0016] 1. By providing a bristle-lifting component on the surface cleaning device and positioning it behind the friction cleaning surface in the rotation direction of the cleaning roller, the bristle-lifting component can lift up the bristles on the cleaning roller that have been flattened by the surface to be cleaned, thereby bringing the upright bristles into contact with the surface to be cleaned. Therefore, by providing a bristle-lifting component on the surface cleaning device that can lift the bristles on the cleaning roller, this invention increases the fluffiness of the bristles on the cleaning roller, thereby improving the cleaning roller's ability to adsorb dirt on the surface to be cleaned and enhancing the cleaning effect of the cleaning device.

[0017] 2. By setting a scraping component on the machine body and positioning it between the friction cleaning surface and the bristle-supporting component in the rotation direction of the cleaning roller, the scraping component can scrape the bristles contaminated with dirt and squeeze out the wastewater absorbed by the bristles, keeping the bristles on the cleaning roller clean and improving the continuous cleaning ability of the cleaning roller.

[0018] 3. By setting the bristle-raising component as a support roller, and setting a liquid supply component on the machine body that points towards the cleaning roller, and placing the support roller between the scraping component and the liquid supply component along the rotation direction of the cleaning roller, the support roller can lift up the bristles scraped down by the scraping component, and the liquid supply component can directly spray the cleaning liquid onto the root of the bristles, allowing the cleaning liquid to penetrate outward from the root of the bristles, thereby improving the water absorption rate of the bristles.

[0019] 4. By setting the bristle-lifting component as a spraying component, and aligning the spraying direction with the rotation direction of the cleaning roller, the cleaning liquid jet from the spraying component can effectively disperse the bristles adhering to the cleaning roller. Therefore, the bristles dispersed by the spraying component can change from an adhered state to an upright state, improving the bristles' ability to absorb dirt. Furthermore, the spraying component can also wet the bristles on the cleaning roller, allowing it to simultaneously perform both bristle-lifting and wetting functions. This simplifies the internal structure of the surface cleaning device and improves its integration.

[0020] 5. By setting bristles, silicone strips, serrations and / or bosses on the surface of the support roller, the contact area between the support roller and the cleaning roller can be increased, so that the bristles on the cleaning roller can be better supported by the support roller.

[0021] 6. By configuring the bristles on the cleaning roller with a mixture of soft and hard bristles, the hard bristles are less likely to stick to the surface of the cleaning roller due to water tension after the roller is wet. Therefore, arranging the hard bristles among the soft bristles increases their fluffiness and the gaps between them, thereby improving the cleaning roller's ability to absorb dirt from the surface to be cleaned. Furthermore, when the cleaning roller passes the scraping component, the hard bristles immediately stand upright due to their own rebound, supporting the nearby soft bristles to stand upright as well, improving the uprighting effect of the soft bristles on the cleaning roller. Attached Figure Description

[0022] Some embodiments of the present invention will now be described with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the overall structure of the cleaning device in the first embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view of the main unit of the cleaning device in the first embodiment of the present invention;

[0025] Figure 3 yes Figure 2 A magnified view of a portion of region A in the middle;

[0026] Figure 4 This is a front view and a partially enlarged schematic diagram of the cleaning roller in the first embodiment of the present invention;

[0027] Figure 5 This is an isometric view of the scrubbing roller and the support roller in the first embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the cooperation relationship between the cleaning roller and the support roller in the first embodiment of the present invention;

[0029] Figure 7 This is a first schematic diagram of the raised structure of the support roller in the first embodiment of the present invention;

[0030] Figure 8 This is a second schematic diagram of the raised structure of the support roller in the first embodiment of the present invention;

[0031] Figure 9 This is a front view and a partially enlarged schematic diagram of the cleaning roller in the second embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram showing the tilting direction of the bristles on the cleaning roller in the third embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram showing the positional relationship between the support roller, the scraping component, and the spraying component in the fourth embodiment of the present invention;

[0034] Figure 12 This is a schematic diagram showing the relative positional relationship between the cleaning roller and the support roller in the sixth embodiment of the present invention.

[0035] List of reference numerals in the attached diagram:

[0036] 1. Barre;

[0037] 2. Machine body; 21. Cleaning roller; 211. Floor washing roller; 212. Floor wiping roller; 213. Brush bristles; 2131. Soft bristles; 2132. Hard bristles; 22. Support roller; 221. Raised structure; 23. Scraping component; 24. Liquid supply component. Detailed Implementation

[0038] Those skilled in the art should understand that the embodiments described below are merely some embodiments of the present invention, intended to explain the technical principles of the present invention and not to limit the scope of protection of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments provided by the present invention without creative effort should still fall within the scope of protection of the present invention.

[0039] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The surface cleaning device of the present invention with good cleaning effect includes a body and a cleaning roller with bristles. The cleaning roller forms a friction cleaning surface by pressing against the surface to be cleaned. The surface cleaning device also includes a bristle-lifting component, which is disposed behind the friction cleaning surface in the rotation direction of the cleaning roller to lift up the bristles that have been scraped down by the surface to be cleaned.

[0042] Those skilled in the art will understand that by providing a bristle-lifting component on the surface cleaning device and positioning it behind the friction cleaning surface in the rotation direction of the cleaning roller, the bristle-lifting component can lift up the bristles on the cleaning roller that have been flattened by the surface to be cleaned, thereby bringing the upright bristles into contact with the surface to be cleaned. Therefore, by providing a bristle-lifting component on the surface cleaning device that can lift the bristles on the cleaning roller, the present invention increases the fluffiness of the bristles on the cleaning roller, thereby improving the cleaning roller's ability to adsorb dirt on the surface to be cleaned and enhancing the cleaning effect of the cleaning device.

[0043] It should be noted that the surface cleaning device disclosed herein can be a handheld cleaning roller device with a handle and manually operated by the user, such as a handheld floor scrubber or handheld floor mop. The cleaning device disclosed herein can also be a cleaning robot with drive wheels, which can control the drive wheels to move according to its stored program and control the cleaning roller to clean the floor.

[0044] The following reference Figures 1 to 11 The present invention will be further described in detail with reference to specific embodiments, demonstrating the surface cleaning device with good cleaning effect.

[0045] In the first embodiment of the present invention:

[0046] like Figures 1 to 3 As shown, the surface cleaning device in this embodiment includes a handle 1 and a body 2 rotatably connected to the handle 1. The body 2 includes a cleaning roller 21, a scraping member 23 that abuts against the cleaning roller 21, a hair-forming assembly that contacts the cleaning roller 21, and a liquid supply member 24 disposed between the scraping member 23 and the hair-forming assembly. In this embodiment, the hair-forming assembly is a hair-forming roller 22 that rolls in contact with the cleaning roller 21.

[0047] Those skilled in the art will understand that the user controls the forward and backward movement of the machine body 2 by holding the handle 1, causing the cleaning roller 21 disposed within the machine body 2 to contact the surface to be cleaned and to rub the surface back and forth. The cleaning roller 21 includes a scrubbing roller 211 located at the front of the machine body 2 and a wiping roller 212 located at the rear of the machine body 2. When the cleaning roller 21 is pressed against the surface to be cleaned, the contact portion of the cleaning roller 21 deforms to form a friction cleaning surface. The surface cleaning device increases the contact area with the surface to be cleaned through this friction cleaning surface, thereby improving the cleaning effect of the surface cleaning device. As a preferred embodiment, the friction cleaning surface extends from one end of the cleaning roller 21 to the other end, and the width of the friction cleaning surface in the direction perpendicular to the axis of the cleaning roller 21 is 3 cm to 5 cm.

[0048] like Figure 4 As shown, both the scrubbing roller 211 and the mopping roller 212 have bristles 213 on their cylindrical surfaces to absorb and clean stains on the surface to be cleaned. A scraping member 23 abuts against the cleaning roller 21, and the length of the scraping member 23 in the axial direction of the cleaning roller 21 is greater than the length of the cleaning roller 21, allowing the scraping member 23 to completely cover the bristles 213 on the cleaning roller 21 to remove dirt. A support roller 22 is located behind the scraping member 23 in the rotational direction of the cleaning roller 21, allowing the support roller 22 to lift up the bristles 213 that have been scraped down by the scraping member 23.

[0049] like Figure 4 and Figure 5 As shown, the support roller 22 has a rotational direction opposite to that of the cleaning roller 21, and the rotational speed of the support roller 22 is higher than that of the cleaning roller 21. When the cleaning roller 21 is rotating counterclockwise, the bristles 213 on the cleaning roller 21 are squeezed and tilted to the right rear by the scraping member 23, causing the bristles 213 to adhere to the surface of the cleaning roller 21. When the pressed bristles 213 move to the support roller 22, the support roller 22 rotates clockwise relative to the cleaning roller 21, so that the support roller 22 can provide a force to the bristles 213 in an upward and left direction. Therefore, the support roller 22 can lift the bristles 213 that are attached to the cleaning roller 21.

[0050] like Figures 6 to 8 As shown, the outer surface of the support roller 22 has several protrusions 221 distributed along its axial direction. Furthermore, the sum of the maximum radius c of the cleaning roller 21 and the maximum radius e of the support roller 22 is denoted as the first length (c+e), and the distance between the axis of the cleaning roller 21 and the axis of the support roller 22 is the second length b. The difference between the first length (c+e) and the second length b ranges from 3mm to 5mm.

[0051] Those skilled in the art will understand that by using an interference fit between the cleaning roller 21 and the support roller 22, the protrusion structure 221 of the support roller 22 can extend into the bristles 213 of the cleaning roller 21, which is beneficial to improving the straightening effect of the support roller 22 on the bristles 213 of the cleaning roller 21. The protrusion structure 221 can be implemented in a variety of feasible ways.

[0052] like Figure 7 and Figure 8 As shown, the protruding structure 221 can be selected from silicone strips, teeth, cams or bristles 2132, and the protruding structure 221 can also adopt a variety of the above structures in an alternating arrangement.

[0053] like Figure 3 As shown, the liquid supply component 24 is located between the support roller 22 and the scraping component 23 in the rotation direction of the cleaning roller 21, and the liquid supply component 24 points towards the cleaning roller 21. Those skilled in the art will understand that by providing the liquid supply component 24 pointing towards the cleaning roller 21 on the machine body 2, the liquid supply component 24 can continuously supply sufficient cleaning liquid to the cleaning roller 21, keeping the cleaning roller 21 in a wet state and improving the wet mopping effect of the cleaning roller 21.

[0054] The following reference Figures 1 to 8 The working principle of the surface cleaning device with good cleaning effect of the present invention will be briefly explained.

[0055] Taking the scrubbing roller 211 located at the front of the machine body 2 as an example, when the surface cleaning device is in operation, the machine body 2 drives the scrubbing roller 211 to rotate and drag back and forth on the surface to be cleaned. The liquid supply component 24 on the machine body 2 provides cleaning liquid to the scrubbing roller 211, keeping the bristles 213 on the scrubbing roller 211 moist. After the scrubbing roller 211 removes dirt from the surface to be cleaned, the bristles 213 on the scrubbing roller 211 are contaminated with dirt. Then, the scrubbing roller 211 continues to rotate counterclockwise. The bristles 213 contaminated with dirt pass through the scraping component 23. The scraping component 23 squeezes the bristles 213 of the scrubbing roller 211, squeezing out the dirty water and other dirt from the bristles 213. At this time, the bristles 213 squeezed by the scraping component 23 tilt to the right and rear and adhere to the surface of the scrubbing roller 211.

[0056] Then, the scrubbing roller 211 continues to rotate counterclockwise until the bristles 213 attached to the surface of the scrubbing roller 211 come into contact with the support roller 22. The support roller 22 has a rotation direction opposite to that of the scrubbing roller 211 and a rotation speed greater than that of the scrubbing roller 21. The support roller 22 is provided with a protruding structure 221 that can extend into the bristles 213 of the scrubbing roller 211. As the support roller 22 rotates, the protruding structure 221 on the support roller 22 can push the bristles 213 of the scrubbing roller 211 to the upper left, so that the bristles 213 that have been scraped down by the scraping member 23 are straightened.

[0057] Those skilled in the art will understand that by providing a support roller 22 on the surface cleaning device and positioning it behind the friction cleaning surface in the rotation direction of the cleaning roller 21, the support roller 22 can lift up the bristles 213 on the cleaning roller 21 that have been flattened by the surface to be cleaned, thereby bringing the upright bristles 213 into contact with the surface to be cleaned. Therefore, by providing a support roller 22 on the surface cleaning device that can lift the bristles 213 on the cleaning roller 21, the present invention increases the fluffiness of the bristles 213 on the cleaning roller 21, thereby improving the cleaning roller 21's ability to adsorb dirt on the surface to be cleaned and enhancing the cleaning effect of the cleaning device.

[0058] In the second embodiment of the present invention:

[0059] like Figure 9 As shown, compared with the first embodiment, the bristles 213 on the cleaning roller 21 in this embodiment include soft bristles 2131 and hard bristles 2132. The length of the hard bristles 2132 is less than the length of the soft bristles 2131. As a preferred embodiment, the length of the hard bristles 2132 is 30%-50% of the length of the soft bristles 2131.

[0060] Those skilled in the art will understand that by setting the length of the hard bristles 2132 on the cleaning roller 21 to be less than the length of the soft bristles 2131, the situation where the hard bristles 2132 are too long and obstruct the support roller 22, thus preventing it from properly straightening the soft bristles 2131, can be avoided.

[0061] It should be noted that the soft bristles described in this invention can be made of microfiber, cotton fiber, etc., while the stiff bristles can be made of nylon fiber, polypropylene fiber, etc.

[0062] In the third embodiment of the present invention:

[0063] like Figure 10 As shown, compared to the second embodiment, in this embodiment, the stiff bristles 2132 are inclined in the opposite direction to the rotation direction of the cleaning roller 21, and the inclination angle between the stiff bristles 2132 and the chord passing through the center of the circle at the point where the stiff bristles 2132 are located is 15°-30°. Those skilled in the art will understand that by arranging the stiff bristles 2132 at an incline relative to the cleaning roller 21, the straightening effect of the stiff bristles 2132 on the soft bristles 2131 can be improved, further increasing the fluffiness of the soft bristles 2131 on the cleaning roller 21.

[0064] In the fourth embodiment of the present invention:

[0065] like Figure 11As shown, compared with the first embodiment, in this embodiment, the support roller 22 is located between the liquid supply component 24 and the scraping component 23 in the rotation direction of the cleaning roller 21, so that the bristles 213 on the cleaning roller 21 are first scraped by the scraping component, then straightened by the support roller 22, and finally sprayed by the liquid supply component 24.

[0066] Those skilled in the art will understand that by positioning the support roller 22 between the scraping member 23 and the liquid supply member 24 along the rotation direction of the cleaning roller 21, the support roller 22 can lift up the bristles 213 scraped down by the scraping member 23, and the liquid supply member 24 can directly spray the cleaning liquid onto the root of the bristles 213, so that the cleaning liquid can penetrate outward from the root of the bristles 213, thereby improving the water absorption rate of the bristles 213.

[0067] In the fifth embodiment of the present invention:

[0068] Although not shown in the figure, compared with any of the embodiments in the first to fourth embodiments, in this embodiment, at least the floor washing roller 211 and the floor wiping roller 212 are provided with a matching liquid supply component 24. This arrangement effectively reduces the production cost of the cleaning device.

[0069] In the sixth embodiment of the present invention:

[0070] like Figure 12 As shown, compared with the first embodiment, in this embodiment, the support roller 22 and the cleaning roller 21 are arranged in parallel, and the support roller 22 is in contact with the surface to be cleaned.

[0071] Those skilled in the art will understand that by bringing the support roller 22 into contact with the surface to be cleaned, the support roller 22 can perform the function of brushing and lifting, and at the same time, the support roller 22 can also work with the cleaning roller 21 to pick up some dirt (such as hair, paper scraps and other dirt that are easy to stick to the surface to be cleaned) to achieve the cleaning function of the surface to be cleaned, thereby improving the cleaning effect of the surface cleaning device.

[0072] In the seventh embodiment of the present invention:

[0073] Although not shown in the figure, compared with the first embodiment, the surface cleaning device in this embodiment has a brushing component as a spraying component. The spraying component sprays cleaning liquid onto the cleaning roller 21, and the spraying direction of the spraying component is consistent with the rotation direction of the cleaning roller 21.

[0074] Those skilled in the art will understand that the spray component can disperse the bristles 213 on the cleaning roller 21, causing the bristles 213 to change from a state of being attached to the cleaning roller 21 to a state of being upright, thereby improving the bristles 213's ability to adsorb dirt. In addition, the spray component can also wet the bristles 213 on the cleaning roller 21, so that the spray component can simultaneously perform the functions of bristle support and wetting, simplifying the internal structure of the surface cleaning device and improving the integration of the surface cleaning device.

[0075] Furthermore, those skilled in the art can make the following adjustments to any of the embodiments from the first to the seventh embodiment according to actual needs: omitting the scraping component 23. It will be understood by those skilled in the art that omitting the scraping component 23 will result in the cleaning roller not being cleaned in a timely manner, thus reducing the cleaning effect of the surface cleaning device to some extent.

[0076] The technical solutions of the present invention have been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to related technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of the present invention will fall within the scope of protection of the present invention.

Claims

1. A surface cleaning device with good cleaning effect, comprising a body and a cleaning roller with bristles, characterized in that, The cleaning roller forms a friction cleaning surface by pressing against the surface to be cleaned. The surface cleaning device also includes a bristle-lifting component, which is located behind the friction cleaning surface in the rotation direction of the cleaning roller to lift up the bristles that have been scraped down by the surface to be cleaned. The machine body also includes a scraping component, which is disposed between the friction cleaning surface and the bristle-forming assembly in the rotation direction of the cleaning roller. The scraping component scrapes the bristles on the rotating cleaning roller to remove dirt. The machine body also includes a liquid supply component, which is located between the bristle-forming assembly and the scraping component.

2. The surface cleaning device with good cleaning effect according to claim 1, characterized in that, The length of the scraping member in the axial direction of the cleaning roller is not less than the length of the cleaning roller.

3. The surface cleaning device with good cleaning effect according to any one of claims 1 or 2, characterized in that, The hair-grooming assembly includes a hair-grooming roller that rolls in contact with the cleaning roller and rotates in the opposite direction.

4. The surface cleaning device with good cleaning effect according to any one of claims 1 or 2, characterized in that, The bristle-lifting assembly includes a spraying member that sprays liquid onto the cleaning roller in the same direction as the rotation of the cleaning roller, so that the liquid can lift up the bristles that have been scraped off the cleaning roller.

5. The surface cleaning device with good cleaning effect according to claim 3, characterized in that, The support roller is arranged parallel to the cleaning roller and in contact with the surface to be cleaned; or, the rotation center axis of the support roller is higher than the rotation center axis of the cleaning roller, and the radius of the support roller is smaller than the radius of the cleaning roller.

6. The surface cleaning device with good cleaning effect according to claim 3, characterized in that, The rotational speed of the support roller is greater than that of the cleaning roller.

7. The surface cleaning device with good cleaning effect according to claim 3, characterized in that, The roller includes a roller body and bristles, silicone strips, teeth and / or bosses disposed on the surface of the roller body.

8. The surface cleaning device with good cleaning effect according to claim 3, characterized in that, The machine body is also provided with a liquid supply component pointing towards the cleaning roller, and the support roller is located between the liquid supply component and the scraping component in the rotation direction of the cleaning roller.

9. The surface cleaning device with good cleaning effect according to any one of claims 1 or 2, characterized in that, The bristles of the cleaning roller include soft bristles and hard bristles, with the hard bristles serving at least to support the soft bristles.

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