Brush heads and surface cleaning equipment
The brush head assembly with a pivotally connected scraper and water channel plate maintains effective cleaning of the roller brush by ensuring continuous contact, addressing the issue of wear and enhancing scraper rigidity.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SHENZHEN ROBOROCK INNOVATION TECH CO LTD
- Filing Date
- 2023-11-10
- Publication Date
- 2026-05-07
AI Technical Summary
Existing surface cleaning devices face challenges in effectively removing dirt from the roller brushes, especially as they wear down over time, leading to reduced cleaning efficiency.
A brush head assembly with a pivotally connected water channel plate assembly and a scraper, where the scraper is fixedly connected to the water channel plate and configured to rotate relative to the brush head housing, ensuring continuous contact with the roller brush to remove dirt, even as the brush wears.
The solution ensures effective and continuous cleaning of the roller brush, maintaining cleaning efficiency even as the brush diameter shrinks, and enhances the rigidity of the scraper for stable contact.
Smart Images
Figure 2026514256000001_ABST
Abstract
Description
Related Applications
[0001] This disclosure claims the priority of Chinese Patent Application No. 202321082679.4, filed in China on May 6, 2023, and all of its contents are incorporated herein by reference.
Technical Field
[0002] This disclosure relates to the field of cleaning technology, and specifically to brush heads and surface cleaning devices.
Background Art
[0003] With the development of science and technology, surface cleaning devices such as floor washing machines and sweeping and mopping cleaning robots have been widely adopted in many households, and surface cleaning devices can save time and labor compared to traditional manual cleaning.
Summary of the Invention
[0004] Some embodiments of this disclosure provide a brush head assembled to a surface cleaning device, and the brush head includes a brush head housing having an accommodation space, a roller brush provided in the accommodation space, a water channel plate assembly provided between the brush head housing and the roller brush and configured to supply cleaning liquid to the roller brush, a scraper fixedly connected to the water channel plate assembly and configured to abut against the roller brush, the water channel plate assembly is pivotally connected to the brush head housing, and the water channel plate assembly is configured to have a tendency to rotate with respect to the brush head housing such that the scraper abuts against the roller brush.
[0005] In some embodiments, the brush head The system further includes an elastic member that cooperates with the brush head housing and the water plate assembly such that the water plate assembly has a tendency to rotate relative to the brush head housing.
[0006] In some embodiments, the elastic member includes a torsion spring, the torsion spring is in an energy-storing state, and the water plate assembly has a rotational tendency relative to the brush head housing.
[0007] In some embodiments, the scraper is fixedly connected to the water pipe assembly via a fixing member.
[0008] In some embodiments, the direction of rotational tendency of the water plate assembly relative to the brush head housing is opposite to the direction of rotation of the roller brush.
[0009] In some embodiments, the contact angle between the scraper and the roller brush is between 0 and 90 degrees.
[0010] In some embodiments, the accommodation space includes a first accommodation space and a second accommodation space. The roller brush includes a first roller brush and a second roller brush, and the first roller brush and the second roller brush are provided in the first and second housing spaces, respectively. The water supply plate assembly includes a first water supply plate assembly and a second water supply plate assembly, each corresponding to the first roller brush and the second roller brush, and configured to supply cleaning fluid to the first roller brush and the second roller brush, respectively. The scraper includes a first scraper and a second scraper, which are fixedly connected to the first water plate assembly and the second water plate assembly, respectively, and are configured to contact the first roller brush and the second roller brush, respectively.
[0011] In some embodiments, the free end of the first scraper is provided facing the second roller brush, and the free end of the second scraper is provided facing the first roller brush.
[0012] In some embodiments, the first roller brush and the second roller brush are configured to rotate opposite each other.
[0013] Some embodiments of this disclosure provide a surface cleaning device comprising the brush head described in the embodiments. [Brief explanation of the drawing]
[0014] The accompanying drawings are incorporated into this specification and constitute part of this specification, illustrating embodiments applicable to this disclosure and are used together with the specification to interpret the principles of this disclosure. Clearly, the accompanying drawings described below are only a few embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these accompanying drawings without any creative work. In the accompanying drawings, [Figure 1] This is a schematic diagram of the structure of a brush head provided in some embodiments of the present disclosure. [Figure 2] Figure 1 is a schematic diagram of the partial structure of the brush head, showing only the brush head housing, water plate assembly, and roller brush. [Figure 3] Figure 2 is a schematic diagram of the partial structure of the brush head shown in Figure 1, and only the brush head housing and water plate assembly are shown. [Figure 4] These are schematic diagrams of the structure of a water pipe assembly and scraper provided by some embodiments of the present disclosure. [Figure 5] This is the local structure of the top view in Figure 2. [Figure 6] Figure 2 is a schematic diagram of the partial cross-sectional structure. [Figure 7] This is a schematic diagram of the structure of a surface cleaning device provided by some embodiments of this disclosure. [Modes for carrying out the invention]
[0015] To further clarify the purpose, technical solutions, and advantages of this disclosure, the disclosure will be described in more detail below with reference to the accompanying drawings, although obviously the embodiments described are only a selection of the embodiments of this disclosure, not all of them. Any other embodiments that can be obtained by a person skilled in the art without any creative work based on the embodiments of this disclosure are all covered by this disclosure.
[0016] Furthermore, the terms “equipped with,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, and a product or apparatus comprising a set of elements may also include, in addition to those elements, other elements not explicitly listed, or elements specific to such product or apparatus. Unless further restrictions are placed on it, an element limited by the expression “equipped with one…” is not excluded from including other similar elements in the product or apparatus of the said element.
[0017] In this field, surface cleaning equipment such as floor cleaning machines and sweeping / mopping robots typically comprises a surface cleaning equipment body and a cleaning sheet. Here, the surface cleaning equipment typically includes liquid containers such as a wastewater tank and a clean water tank, and a fan for suction. The cleaning sheet includes cleaning members for mopping and scrubbing, such as roller brushes, and the number of roller brushes may be one, two, or more. The cleaning liquid in the clean water tank, such as clean water, is sprayed through a built-in water pipe onto the roller brush with a blanket and / or the surface to be cleaned. The roller brush rotates at high speed to scrub and clean the ground, and at the same time, the fan creates negative pressure in the equipment air duct of the cleaning equipment, drawing in wastewater (which may contain solid debris) from the surface to be cleaned through the dirt suction port of the cleaning equipment and sucking it up into the wastewater tank.
[0018] The present disclosure provides a brush head assembled to a surface cleaning device, the brush head including a brush head housing having an accommodation space, a roller brush provided in the accommodation space, a water channel plate assembly provided between the brush head housing and the roller brush and configured to supply a cleaning liquid to the roller brush, and a scraper fixedly connected to the water channel plate assembly and configured to contact the roller brush, wherein the water channel plate assembly is pivotally connected to the brush head housing, and the water channel plate assembly is configured to have a tendency to rotate with respect to the brush head housing such that the scraper contacts the roller brush.
[0019] The present disclosure strengthens the rigidity of the scraper by fixedly connecting the water channel plate assembly to the scraper, for example, by a rigid connection, and by pivotally connecting the water channel plate assembly to the brush head housing, the water channel plate assembly is configured to have a tendency to rotate with respect to the brush head housing such that the scraper is brought into contact with the roller brush, so that the scraper can contact the roller brush well, the scraper can easily clean the dirt on the surface of the roller brush, and even after the outer peripheral diameter of the roller brush wears and shrinks after being used for a certain period of time, the scraper can still contact the roller brush to clean the surface dirt of the roller brush.
[0020] Hereinafter, selectable embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
[0021] FIG. 1 is a schematic structural view of a brush head provided by some embodiments of the present disclosure. FIG. 2 is a schematic partial structural view of the brush head in FIG. 1, showing only the brush head housing, the water channel plate assembly and the roller brush. FIG. 3 is a schematic partial structural view of the brush head of FIG. 1 in FIG. 2, showing only the brush head housing and the water channel plate assembly. FIG. 4 is a schematic structural view of the water channel plate assembly and the scraper provided by some embodiments of the present disclosure.
[0022] As shown in Figures 1 to 4, some embodiments of the present disclosure provide a brush head 100 configured to be assembled into a surface cleaning machine, the brush head comprising a brush head housing 10, a roller brush 20, a watering plate assembly 30, and a scraper 40.
[0023] The brush head housing 10 has a housing space 11, and the roller brush 20 is provided in the housing space 11. The roller brush 20 rotates at high speed so that the brush head cleans the work surface. The water plate assembly 30 is provided between the brush head housing 10 and the roller brush 20. The water plate assembly 30 is provided in the housing space 11 and assembled to the brush head housing 10, and is configured to supply cleaning fluid, such as clean water, to the roller brush 20. The surface of the water plate assembly 30 facing the roller brush 20 is provided with a water pipe and a spray hole that communicates with a clean water tank. The cleaning fluid from the clean water tank is sprayed from the water pipe in the water plate assembly 30 through the spray hole onto the roller brush 20, soaking the roller brush 20, and the brush head 100 performs a wet cleaning operation, achieving more effective cleaning of the work surface.
[0024] While the brush head is performing cleaning of the work surface, the roller brush 20 rotates at high speed and rubs against the work surface to perform cleaning, and dirt may adhere to the roller brush 20. The scraper 40 is fixedly connected to the water plate assembly 30 and is configured to come into contact with the roller brush 20 to clean surface dirt of the roller brush 20. The scraper 40 comes into contact with the outer surface of the roller brush 20, for example, with the brush bristles or brush cloth. As the roller brush 20 rotates at high speed, the scraper 40 scrapes off dirt adhering to the surface of the roller brush 20, ensuring a real-time cleaning effect of the roller brush 20 by the scraper 40.
[0025] The scraper 40 is fixedly connected to the water supply plate assembly 30, and the relative positions of the two are fixed, so they are considered to be an integrated structure.
[0026] The watering plate assembly 30 is pivotably connected to the brush head housing 10, and the watering plate assembly 30 is configured to have a tendency to rotate relative to the brush head housing 10 so that the scraper 40 contacts the roller brush 20. The watering plate assembly 30 and the scraper 40 are integrally pivotable relative to the brush head housing 10 and have a tendency to rotate relative to the brush head housing 10, thereby ensuring that the scraper 40 always contacts the roller brush 20, for example, with a predetermined force. This ensures the cleaning effect on the surface of the roller brush 20.
[0027] In some embodiments of the present disclosure, the watering plate assembly is fixedly connected to a scraper and pivotably connected to the brush head housing so that the watering plate assembly has a tendency to rotate relative to the brush head housing so that the scraper contacts the roller brush, the scraper can easily clean surface dirt from the roller brush, and even if the outer diameter of the roller brush wears down and shrinks after being used for a certain period of time, the scraper can still contact the roller brush and clean surface dirt from the roller brush.
[0028] Figure 5 shows a local structure of the top view of Figure 2, wherein the brush head housing 10 has an opening 12, at least a portion of the water plate assembly 30 protrudes from the opening 12, and the pivot structure of the brush head housing 10 and the water plate assembly 30 is provided in the opening 12. In some embodiments, the brush head 100 further includes an elastic member 50 which cooperates with the brush head housing 10 and the water plate assembly 30 to cause the water plate assembly 30 to have a tendency to rotate relative to the brush head housing 10, and further configured such that the scraper 40 is always in contact with the roller brush 20 to clean the surface of the roller brush 20.
[0029] Figure 6 is a schematic diagram of the partial cross-sectional structure of Figure 2. As shown in Figures 1 to 6, the brush head housing 10 has a rotating shaft 13, the water plate assembly 30 is pivotally connected to the brush head housing 10 via the rotating shaft 13, the elastic member 50 includes a torsion spring, the torsion spring is sleeved on the rotating shaft 13, one end of the torsion spring abuts against the torsion spring limiting structure of the brush head housing 10, and the other end abuts against the torsion spring limiting structure of the water plate assembly 30, the torsion spring is in an energy storage state, the water plate assembly 30 has a tendency to rotate relative to the brush head housing 10, and furthermore, the scraper 40 is always in contact with the roller brush 20 to clean the surface of the roller brush 20.
[0030] In some embodiments, the scraper 40 is fixedly connected to the water plate assembly 30 via a fixing member, for example, a rigid connection. The fixing member is, for example, a bolt or screw, which fixes the scraper 40 and the water plate assembly 30, thereby increasing the rigidity of the scraper and making the rotational contact between the scraper 40 and the roller brush 20 more stable. In other embodiments, the scraper 40 and the water plate assembly 30 are integrally molded, so that they form a rigid, integrated structure, increasing the rigidity of the scraper and further achieving good contact between the scraper and the roller brush.
[0031] In some embodiments, when the surface cleaning equipment performs normal ground cleaning tasks, the direction of rotation of the water plate assembly 30 relative to the brush head housing 10 is opposite to the direction of rotation of the roller brush 20. This allows the roller brush to clean the ground while the scraper 40 cleans the roller brush more effectively, and the scraper 40 can effectively remove dirt from the roller brush 20 when the roller brush 20 rotates at high speed.
[0032] In some embodiments, the contact angle between the scraper 40 and the roller brush 20 is between 0 and 90 degrees, for example, 15, 30, 45, 60, or 75 degrees. The contact angle in this disclosure refers to the angle between the direction of extension of the free end of the scraper 40, i.e., the end that contacts the roller brush 20, and the diameter of the roller brush at the contact point between the free end of the scraper 40 and the roller brush. Adopting this angle range allows the scraper 40 to clean the roller brush more effectively and is advantageous for removing dirt on the roller brush 20 when the roller brush 20 is rotating at high speed.
[0033] In some embodiments, as shown in Figures 1 to 6, the brush head 100 has a double brush structure, and the housing space 11 of the head housing 10 includes a first housing space 111 and a second housing space 112 arranged in parallel.
[0034] The roller brush 20 includes a first roller brush 21 and a second roller brush 22. The first roller brush 21 is, for example, a front roller brush and is also called the front roller brush 21, and the second roller brush 22 is, for example, a rear roller brush and is also called the rear roller brush 22. The first roller brush 21 and the second roller brush 22 are arranged in parallel, and the first roller brush 21 and the second roller brush 22 are provided in the first housing space 111 and the second housing space 112, respectively. The brush head 100 employs a double roller brush structure, and the double roller brushes rotate in opposition to clean the work surface, achieving a better cleaning effect.
[0035] The water plate assembly 30 includes a first water plate assembly 31 and a second water plate assembly 32, the first water plate assembly 31 and the second water plate assembly 32 correspond to the first roller brush 21 and the second roller brush 22, respectively, and are configured to supply cleaning fluid to the first roller brush 21 and the second roller brush 22, respectively, and the water pipes on the first water plate assembly 31 and the second water plate assembly 32 are in communication with a clean water tank.
[0036] The scraper 40 includes a first scraper 41 and a second scraper 42, the first scraper 41 and the second scraper 42 being fixedly connected to the first water plate assembly 31 and the second water plate assembly 32, respectively, and configured to contact the first roller brush 21 and the second roller brush 22, respectively. The first scraper 41 and the second scraper 42 are fixedly connected to the first water plate assembly 31 and the second water plate assembly 32, respectively, via fixing members, such as bolts and screws. In this way, the first scraper 41 and the first water plate assembly 31 form an integrated structure, increasing the rigidity of the first scraper 41 and making the contact between the first scraper 41 and the first roller brush 21 more stable. Similarly, the second scraper 42 and the second water plate assembly 32 form an integrated structure, increasing the rigidity of the second scraper 42 and making the contact between the second scraper 42 and the second roller brush 22 more stable.
[0037] In some embodiments, as shown in Figures 1 to 6, the free end of the first scraper 41 is provided facing the second roller brush 22, and the free end of the second scraper 42 is provided facing the first roller brush 21.
[0038] In some embodiments, the first roller brush 21 and the second roller brush 22 are configured to rotate opposite each other. As shown in Figures 1 to 6, the first roller brush and the second roller brush 22 are arranged parallel to each other, and their bristles interfere with each other. When the brush head 100 performs a cleaning operation on a cleaning surface, the first roller brush 21 and the second roller brush 22 rotate opposite each other. For example, from the viewing angle shown in Figure 2, the first roller brush 21 rotates counterclockwise and the second roller brush 22 rotates clockwise, thereby collecting dirt on the cleaning surface between the first roller brush 21 and the second roller brush 22 and collecting it in a wastewater tank via a dirt suction path.
[0039] The free end of the first scraper 41, which corresponds to the first roller brush 21, is positioned toward the second roller brush 22. The first water plate assembly 31, which is fixed to the first scraper 41 and forms an integral structure with it, has a tendency to rotate clockwise relative to the brush head housing 10. As a result, the first scraper 41 is able to stably contact the first roller brush 21, and when the first roller brush 21 rotates counterclockwise, the first scraper 41 can remove dirt adhering to the surface of the first roller brush 21, thus guaranteeing a real-time cleaning effect of the first roller brush 21 by the first scraper 41.
[0040] The free end of the second scraper 42, which corresponds to the second roller brush 22, is positioned toward the second roller brush 22, and the second water plate assembly 32, which is fixed to the second scraper 42 and forms an integral structure with it, has a tendency to rotate counterclockwise relative to the brush head housing 10. As a result, the second scraper 42 is able to stably contact the second roller brush 22, and when the second roller brush 22 rotates clockwise, the second scraper 42 can remove dirt adhering to the surface of the second roller brush 22, thus guaranteeing a real-time cleaning effect of the second roller brush 22 by the second scraper 42.
[0041] In this disclosure, only the pivot structure of the first water plate assembly 31 and the brush head housing 10 is shown in Figures 5 and 6. The brush head housing 10 has an opening 12, at least a portion of the first water plate assembly 31 protrudes from the opening 12, and the pivot structure of the brush head housing 10 and the first water plate assembly 31 is provided in the opening 12. The elastic member 50 cooperates with the brush head housing 10 and the first water plate assembly 31 so that the first water plate assembly 30 has a tendency to rotate relative to the brush head housing 10, and the first scraper 40 is always in contact with the first roller brush 21 to clean the surface of the first roller brush 20. The brush head housing 10 has a rotating shaft 13, the first water plate assembly 30 is pivotably connected to the brush head housing 10 via the rotating shaft, the elastic member 50 includes a torsion spring, the torsion spring is sleeved on the rotating shaft 13, one end of the torsion spring abuts against a torsion spring limiting structure of the brush head housing 10, and the other end abuts against a torsion spring limiting structure of the first water plate assembly 31, the torsion spring is in an energy storage state, the first water plate assembly 30 has a tendency to rotate relative to the brush head housing 10, and the first scraper 41 is always in contact with the first roller brush 20 to clean the surface of the second roller brush 21.
[0042] The pivot structure between the second water plate assembly 32 and the brush head housing 10 is the same as the pivot structure between the first water plate assembly 31 and the brush head housing 10, and therefore will not be described again.
[0043] In some embodiments, the number of pivot structures connecting the first water plate assembly 31 and the brush head housing 10 is one or more, for example, two, and the two or more pivot structures are spaced apart along the extending direction of the first water plate assembly 31.
[0044] In some embodiments, the number of pivot structures connecting the second water plate assembly 32 and the brush head housing 10 is one or more, for example, two, and the two or more pivot structures are spaced apart along the extending direction of the second water plate assembly 32.
[0045] Figure 7 is a schematic diagram of the structure of a surface cleaning device provided by some embodiments of the present disclosure, and as shown in Figure 7, embodiments of the present disclosure further provide a surface cleaning device 1000 comprising a surface cleaning device body 200 and a brush head 100, wherein the brush head is configured to be detachably assembled to the surface cleaning device body 200.
[0046] In the embodiments of this disclosure, a liquid container is provided with a filtration assembly and an anti-misassembly member that are compatible with each other. This ensures that the liquid container is assembled to the surface cleaning device only when the filtration assembly is accurately installed in the mounting groove of the liquid container. This prevents the user from forgetting to install the filtration assembly, which could lead to dirt from the liquid container entering the surface cleaning device body and thus prevents malfunctions of the surface cleaning device.
[0047] Finally, note that each embodiment in this specification is described incrementally, each embodiment focuses on the differences from other embodiments, and identical or similar parts between embodiments may be referenced to one another. Systems or apparatus disclosed in embodiments are described briefly because they correspond to the methods disclosed in embodiments, but relevant parts should be referred to in the description of the methods section.
[0048] The above embodiments are used to illustrate the technical solutions of this application and are not limiting; although this application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in each of the above embodiments can still be modified or some of their technical features can be replaced with equivalents, and that such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of this application.
Claims
1. A brush head for a surface cleaning device, wherein the brush head is A brush head housing having a storage space, A roller brush provided in the aforementioned storage space, A water supply plate assembly is provided between the brush head housing and the roller brush and configured to supply cleaning fluid to the roller brush, A scraper is fixedly connected to the water supply plate assembly and configured to contact the roller brush, A brush head in which the water plate assembly is pivotably connected to the brush head housing, and the water plate assembly is configured to have a tendency to rotate relative to the brush head housing such that the scraper contacts the roller brush.
2. The aforementioned brush head is The brush head according to claim 1, further comprising an elastic member that cooperates with the brush head housing and the water plate assembly such that the water plate assembly has a tendency to rotate relative to the brush head housing.
3. The brush head according to claim 2, wherein the elastic member includes a torsion spring, the torsion spring is in an energy storage state, and the water plate assembly has a rotational tendency relative to the brush head housing.
4. The brush head according to claim 1, wherein the scraper is fixedly connected to the water pipe assembly via a fixing member.
5. The brush head according to claim 1, wherein the direction of rotational tendency of the water plate assembly with respect to the brush head housing is opposite to the direction of rotation of the roller brush.
6. The brush head according to claim 1, wherein the contact angle between the scraper and the roller brush is 0 to 90 degrees.
7. The aforementioned accommodation space includes a first accommodation space and a second accommodation space. The roller brush includes a first roller brush and a second roller brush, and the first roller brush and the second roller brush are provided in the first and second housing spaces, respectively. The water supply plate assembly includes a first water supply plate assembly and a second water supply plate assembly, each corresponding to the first roller brush and the second roller brush, and configured to supply cleaning fluid to the first roller brush and the second roller brush, respectively. The brush head according to any one of claims 1 to 6, wherein the scraper includes a first scraper and a second scraper, which are fixedly connected to the first water plate assembly and the second water plate assembly, respectively, and are configured to contact the first roller brush and the second roller brush, respectively.
8. The brush head according to claim 7, wherein the free end of the first scraper is provided toward the second roller brush, and the free end of the second scraper is provided toward the first roller brush.
9. The brush head according to claim 7, wherein the first roller brush and the second roller brush are configured to rotate opposite to each other.
10. Surface cleaning equipment, A surface cleaning device characterized by comprising a brush head according to any one of claims 1 to 9.