Roller brush holder and cleaning device

Abstract

1. Roller brush holder, comprising: a housing (1), wherein the housing (1) comprises a chamber and an air duct (11), the chamber being configured to house a roller brush, and the air duct (11) comprising an air outlet (12) and a passage opening (13); an air nozzle (2) disposed in the air outlet (12); and a cover plate (3) arranged over the passage opening (13) and closes the passage opening (13), wherein the housing (1), the air nozzle (2) and the cover plate (3) have an integrated structure. 2. Roller brush holder according to claim 1, wherein the housing (1) and the cover plate (3) are made of the same material. 3. Roller brush holder according to claim 1 or 2, wherein the housing (1) and the cover plate (3) are made of ABS material. 4. Roller brush holder according to claim 1, wherein the housing (1) and the cover plate (3) are made of different materials. 5. Roller brush holder according to claim 1 or 4, wherein the housing (1) is made of ABS material; the cover plate (3) is a composite structure comprising a layer of ABS material and a layer of fiberglass. 6. Roller brush holder according to claim 1 or 4, wherein the housing (1) is made of ABS material; the cover plate (3) is a composite structure comprising a layer of ABS material, a layer of fiberglass, and a layer of polycarbonate. 7. Roller brush holder according to claim 1 or 4, wherein the housing (1) is made of ABS material; the cover plate (3) is a composite structure comprising a fiberglass layer and a polycarbonate strain. 8. Roller brush holder according to claim 1 or 4, wherein the housing (1) is made of ABS material; the cover plate (3) is a composite structure comprising a polyamide layer and a fiberglass layer. 9. The roller brush holder according to claim 1, wherein the air duct (11) comprises a first channel (111) and a second channel (112) arranged side by side; the air outlet (12) is in communication with the first channel (111); the passage opening (13) extends from one side of the first channel (111) near the air outlet (12) to one side of the second channel (112) distant from the air outlet (12). 10. Cleaning device, comprising: a device body; at least one roller brush holder according to any of claims 1 to 9, disposed on the device body; and at least one roller brush, wherein the roller brush is arranged in a roller brush holder.

Description

Roller brush holder and cleaning device Technical field This application relates to the field of smart home technologies and, in particular, to a roller brush holder and cleaning device. Background Since the air duct in the sweeper's roller brush holder is relatively smooth, while the air nozzle includes an undercut, it cannot be directly demolded. As a result, the components of the existing roller brush holder often adopt assembled structures, which can lead to air leakage and dust accumulation in the gaps, affecting the product's cleaning performance. Compendium (I) Purpose of this application One objective of the present application is to provide a roller brush holder and cleaning device, in order to solve the problems of poor sealing performance and the tendency of the roller brush holder to accumulate dust. (II) Technical solution To address the aforementioned problems, the first aspect of this application provides a roller brush holder, comprising a housing, an air nozzle, and a cover plate. The housing includes a chamber and an air duct. The chamber is configured to accommodate a roller brush, and the air duct includes an air outlet and a passage opening. The air nozzle is positioned at the air outlet. The cover plate is positioned over the passage opening and closes it. The housing, air nozzle, and cover plate are integrated into a single unit. Optionally, the housing and cover plate are made of the same material. Optionally, the housing and cover plate are made of ABS material. Optionally, the housing and cover plate are manufactured from different materials. Optionally, the housing is made of ABS material. The cover plate is a composite structure and includes a layer of ABS material and a layer of fiberglass. Optionally, the housing is made of ABS material. The cover plate is a composite structure and includes a layer of ABS material, a layer of fiberglass, and a layer of polycarbonate. Optionally, the housing is made of ABS material. The cover plate is a composite structure and includes a fiberglass layer and a polycarbonate layer. Optionally, the housing is made of ABS material. The cover plate is a composite structure and includes a polyamide layer and a fiberglass layer. Optionally, the air duct includes a first channel and a second channel arranged side by side. The air outlet is connected to the first channel. The passage opening extends from one side of the first channel near the air outlet to one side of the second channel farther from the air outlet. A second aspect of this application provides a cleaning device comprising: a device body, at least one roller brush holder as described above, and at least one roller brush. The roller brush holder is disposed in the device body. The roller brush is disposed in the roller brush holder. (III) Beneficial effects 1. In the roller brush holder according to the embodiments of this application, the housing, air nozzle, and cover plate have an integrated structure, so that the air duct forms a complete sealing structure, preventing poor sealing and air leakage, and improving the cleaning performance of the cleaning device. In addition, the absence of gaps prevents dust accumulation. 2. The cleaning device according to the realizations of the present application is provided with the roller brush holder described above, so that the cleaning device exhibits better cleaning performance, is not prone to dust accumulation and is convenient for daily maintenance and cleaning. Brief description of the drawings Figure 1 is a schematic structural diagram of a roller brush holder according to an embodiment of the present application; Figure 2 is a schematic structural diagram of an accommodation according to an embodiment of the present application; and Figure 3 is a schematic structural diagram of an air housing and nozzle according to an embodiment of the present application. The reference numbers are indicated as: 1. Housing; 2. Air nozzle; 3. Cover plate; 11. air duct; 12. air outlet; 13. passage opening; 111. first channel; and 112. second channel. Detailed description In the description of this application, it should be understood that the directions or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "above", "below", "interior", "exterior", "clockwise", "counterclockwise" and similar terms are those shown in the drawings, have the sole purpose of facilitating and simplifying the description, and are not intended to indicate or imply that the apparatus or element indicated must have a specific direction and be structured and operated in accordance with the specific direction, and should not be interpreted as a limitation of this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and should not be interpreted as indicating or implying relative importance or the number of technical features described. Thus, the features defined by "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality of" refers to two or more features, unless explicitly and specifically defined otherwise. In this application, unless clearly specified and defined otherwise, the terms "assemble," "interconnect," "connect," and "fix" should be understood in their broadest sense. For example, they may mean a fixed connection, a detachable connection, or an integrated connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection through an intermediary, or internal communication between two elements. For those of ordinary technical expertise, the specific meanings of the terms mentioned above in this application may be understood in accordance with specific conditions. The exemplary embodiments of this application are described below with reference to the drawings. It should be understood that the exemplary embodiments described herein are for the sole purpose of illustrating and explaining this application and do not limit it. In one aspect, one embodiment provides a roller brush holder. Figure 1 is a schematic structural diagram of a roller brush holder according to one embodiment. Figure 2 is a schematic structural diagram of a housing according to one embodiment. Figure 3 is a schematic structural diagram of a housing and an air nozzle according to one embodiment. As shown in Figures 1 to 3, the roller brush holder according to the embodiment includes: a housing 1, an air nozzle 2, and a cover plate 3. The housing 1 includes a chamber and an air duct 11. The chamber is configured to accommodate a roller brush, and the air duct 11 includes an air outlet 12 and a passage opening 13. The air nozzle 2 is disposed in the air outlet 12. The cover plate 3 is disposed over the passage opening 13 and closes the passage opening 13. The housing 1, the air nozzle 2, and the cover plate 3 have an integrated structure. In some examples, as shown in Figures 1 to 3, the chamber is connected to the air duct 11 as an integrated structure and is configured to house the roller brush. The passage opening 13 is located near the air outlet 12 to facilitate demolding. In some examples, as shown in Figures 1 to 3, the passage opening 13 is square. This facilitates processing and manufacturing. However, it should be noted that in other embodiments, the passage opening 13 can also be circular, elliptical, or other polygonal, provided it facilitates the demolding of the air nozzle 2 at the air outlet 12 and prevents the air duct 11 in the housing 1 from interfering with the demolding of the air nozzle 2, which is not a limitation of this embodiment. In some examples, as shown in Figures 1 to 3, in the longitudinal direction of the air duct 11, the width of the passage opening 13 is greater than the width of the air outlet 12. In this way, the demolding of the air nozzle 2 is facilitated. In some examples, with reference to Figure 1, the air nozzle 2 is made of flexible plastic. Flexible plastic, also known as soft rubber, is formed by plastic injection molding. It is soft at room temperature, does not require vulcanization treatment, and exhibits good heat resistance and mechanical properties. In some examples, as shown in Figure 1, the integrated structure of the housing 1, air nozzle 2, and cover plate 3 is formed by three injection molding processes. Specifically, the roller brush holder housing 1 is formed by the first injection molding. As shown in Figure 2, the formed housing 1 includes an air duct 11, and the air duct 11 is provided with an air outlet 12 and a passage opening 13. The passage opening 13 is configured for the demolding of the air nozzle 2's internal slide during the second injection molding. The air nozzle 2 is formed in the air outlet 12 by the second in-mold injection molding. As shown in Figure 3, during the second injection molding, the air nozzle 2's internal slide is demolded by being removed through the passage opening 13. The cover plate 3 is formed in the passage opening 13 by the third in-mold injection molding; i.e., the integral injection molding of the roller brush holder is completed.As shown in Figure 1, the housing 1, air keel 2, and cover plate 3 are formed as an integrated structure. The roller brush holder, as embodied, includes housing 1, air nozzle 2, and cover plate 3. Housing 1, air nozzle 2, and cover plate 3 have an integrated structure, so that the air duct 11 forms a complete sealing structure, preventing poor sealing and air leakage, and improving the cleaning performance of the cleaning device. Furthermore, the absence of gaps prevents dust accumulation. In some embodiments, with reference to figure 1, housing 1 and cover plate 3 are made of the same material. In some examples, with reference to Figure 1, housing 1 and cover plate 3 are made of acrylonitrile-butadiene-styrene (ABS) material. Specifically, ABS material refers to an acrylonitrile-butadiene-styrene copolymer, a thermoplastic polymer material with high strength, good toughness, and ease of processing and molding. Housing 1 and cover plate 3 are made of ABS material, allowing cover plate 3 to fit snugly into housing 1 and keeping deformation within a controllable range of approximately 0.2 mm. In other examples, with reference to figure 1, housing 1 and cover plate 3 are made of polyolefin. Specifically, the term "polyolefin" generally refers to a class of thermoplastic resins obtained by homopolymerization or copolymerization of β-olefins such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, and 4-methyl-1-pentene, as well as some cyclic olefins. They offer the advantages of abundant raw material availability, low cost, and ease of processing and molding. In other examples, with reference to figure 1, housing 1 and cover plate 3 are made of polyoxymethylene. Specifically, polyoxymethylene, also known as acetal resin, is a high molecular weight thermoplastic crystalline polymer that has the advantages of high abrasion resistance, good wear resistance, low water absorption, high surface hardness, good rigidity, good dimensional stability, high dimensional accuracy of products, good sliding properties and the like. In other examples, with reference to figure 1, housing 1 and cover plate 3 are made of polycarbonate. Specifically, polycarbonate is a tough thermoplastic resin with a high coefficient of elasticity and strength, high impact resistance, excellent fatigue resistance, good dimensional stability, low creep (little change under high temperature conditions), high transparency, and good coloring ability. In the embodiments, housing 1 and cover plate 3 are made of the same material and therefore have the same properties. This facilitates a good connection during the injection molding process and effectively improves the sealing performance of the air duct. In some embodiments, with reference to figure 1, housing 1 and cover plate 3 are made of different materials. In some examples, with reference to Figure 1, housing 1 is made of ABS material. Cover plate 3 is a composite structure and includes a layer of ABS material and a layer of fiberglass. In some embodiments, the methods of arranging the ABS material layer and the fiberglass layer of the cover plate 3 include, but are not limited to, stacked arrangement, reciprocal cross arrangement, and hybrid arrangement. In some embodiments, the proportions of ABS material and fiberglass content in cover plate 3 are different, with a difference ranging from 5% to 30%. Specifically, cover plate 3 includes ABS material and fiberglass, so the cover plate has good compatibility with housing 1 made of ABS material and exhibits low shrinkage. In some other examples, with reference to Figure 1, housing 1 is made of ABS material. Cover plate 3 is a composite structure and includes a layer of ABS material, a layer of fiberglass, and a layer of polycarbonate. In some embodiments, the methods of arranging the ABS material layer, the fiberglass layer, and the polycarbonate layer of the cover plate 3 include, but are not limited to, stacked arrangement, reciprocal cross arrangement, and hybrid arrangement. In some embodiments, the proportions of ABS material, fiberglass, and polycarbonate content in cover plate 3 are different, with a difference ranging from 5% to 30%. Specifically, cover plate 3 includes ABS, fiberglass, and polycarbonate material; that is, the cover plate has good compatibility with housing 1 made of ABS material and exhibits low shrinkage, facilitating a good connection between cover plate 3 and housing 1. In some other examples, with reference to Figure 1, housing 1 is made of ABS material. Cover plate 3 is a composite structure and includes a fiberglass layer and a polycarbonate layer. In some embodiments, the methods of arranging the fiberglass layer and the polycarbonate layer of the cover plate 3 include, but are not limited to, stacked arrangement, reciprocal cross arrangement, and hybrid arrangement. In some embodiments, the proportions of fiberglass and polycarbonate content in cover plate 3 are different, with a difference ranging from 5% to 30%. Specifically, cover plate 3 includes fiberglass and polycarbonate. Fiberglass offers good insulating properties, high heat resistance, good corrosion resistance, and high mechanical strength. Polycarbonate offers high strength and elasticity, high impact resistance, excellent fatigue resistance, good dimensional stability, and low creep, compensating for fiberglass's shortcomings, such as brittleness and poor wear resistance. The combination of fiberglass and polycarbonate in cover plate 3 ensures good compatibility with housing 1, which is made of ABS material, and also exhibits low shrinkage. In some other examples, with reference to Figure 1, housing 1 is made of ABS material. Cover plate 3 is a composite structure and includes a polyamide layer and a fiberglass layer. In some embodiments, the methods of arranging the polyamide layer and the fiberglass layer of the cover plate 3 include, but are not limited to, stacked arrangement, reciprocal cross arrangement, and hybrid arrangement. In some embodiments, the proportions of polyamide and glass fiber content in cover plate 3 are different, with a difference ranging from 5% to 30%. Specifically, cover plate 3 includes polyamide and fiberglass. Polyamide, commonly known as nylon, has the advantages of being strong, durable, self-lubricating, and suitable for a wide temperature range, in addition to being inexpensive. This offsets the disadvantages of fiberglass, such as brittleness and poor wear resistance. The material of cover plate 3 includes polyamide and fiberglass, so the cover plate not only has good compatibility with housing 1, which is made of ABS material, but also reduces shrinkage. In the embodiments, housing 1 and cover plate 3 are made of different materials, which reduces the limitation regarding the material of cover plate 3. In some embodiments, as shown in Figures 1 to 3, the air duct 11 includes a first channel 111 and a second channel 112 arranged side by side. The air outlet 12 is in communication with the first channel 111. The passage opening 13 extends from one side of the first channel 111 near the air outlet 12 to one side of the second channel 112 far from the air outlet 12. In some examples, as shown in Figures 1 to 3, the first channel 111 and the second channel 112 are configured separately to house a roller brush and are connected to each other. This makes the structure more efficient, facilitating airflow in the air duct 11. In the embodiments, the passage opening 13 extends from one side of the first channel 111 near the air outlet 12 to one side of the second channel 112 far from the air outlet 12, thus providing sufficient space for the demolding of the air nozzle 2 and avoiding interference. In a second aspect, one embodiment further provides a cleaning device. The cleaning device according to the embodiment includes: a device body, at least one roller brush holder as described above, and at least one roller brush. The roller brush holder is arranged in the device body. If there is a plurality of roller brushes, the plurality of roller brushes may be arranged in the roller brush holder. It is understood that the cleaning device according to the embodiment may be a robot sweeper, an integrated sweeping and scrubbing machine, or another cleaning device that meets the requirements. In some examples, the roller brush includes a support component and a cleaning component positioned outside the support component. The support component may be made of a high-strength support material, such as a metal tube or hard plastic. The cleaning component is made of a material with good cleaning properties, such as foam rubber, foam, non-woven fabric, cotton fabric, or lint-free fabric. In this way, the overall structural strength of the roller brush can be improved while still providing good cleaning capabilities. In some examples, the cleaning device also includes a ventilation unit and a dust collection box. The ventilation unit connects to an air nozzle on the roller brush holder, and each pair of roller brushes is mounted on a roller brush holder and has some contact with the floor. The roller brushes sweep the debris from the floor and roll it into an air duct, where it is then drawn into the dust collection box by the air generated by the ventilation unit. The debris is then collected in the dust collection box. The cleaning device may also include a drive system, a detection system, a control module, a power supply system, a human-machine interface system, and similar components. The systems described above are coordinated so that the cleaning device can move autonomously to perform the cleaning function. In the cleaning device, the functional and similar elements that constitute the systems described above are integrated into the main body of the device. The cleaning device according to the embodiments is provided with the roller brush holder according to the above embodiment, so that the cleaning device exhibits better cleaning performance, is not prone to dust accumulation and is convenient for daily maintenance and cleaning. Those experienced in the technique can easily understand that the above advantageous methods can be freely combined and overlapped, provided there is no conflict between them.

Claims

1. A roller brush holder comprising: a housing (1), wherein the housing (1) comprises a chamber and an air duct (11), the chamber being configured to house a roller brush, and the air duct (11) comprising an air outlet (12) and a passage opening (13); an air nozzle (2) disposed in the air outlet (12); and a cover plate (3) disposed over and closing the passage opening (13), wherein the housing (1), the air nozzle (2), and the cover plate (3) have an integrated structure.

2. A roller brush holder according to claim 1, wherein the housing (1) and the cover plate (3) are made of the same material.

3. A roller brush holder according to claim 1 or 2, wherein the housing (1) and the cover plate (3) are made of ABS material. 4.Roller brush holder according to claim 1, wherein the housing (1) and the cover plate (3) are made of different materials.

5. Roller brush holder according to claim 1 or 4, wherein the housing (1) is made of ABS material; the cover plate (3) is a composite structure comprising a layer of ABS material and a layer of fiberglass.

6. Roller brush holder according to claim 1 or 4, wherein the housing (1) is made of ABS material; the cover plate (3) is a composite structure comprising a layer of ABS material, a layer of fiberglass, and a layer of polycarbonate.

7. Roller brush holder according to claim 1 or 4, wherein the housing (1) is made of ABS material; the cover plate (3) is a composite structure comprising a layer of fiberglass and a layer of polycarbonate. 8.Roller brush holder according to claim 1 or 4, wherein the housing (1) is made of ABS material; the cover plate (3) is a composite structure comprising a polyamide layer and a fiberglass layer.

9. The roller brush holder according to claim 1, wherein the air duct (11) comprises a first channel (111) and a second channel (112) arranged side by side; the air outlet (12) is in communication with the first channel (111); the passage opening (13) extends from one side of the first channel (111) near the air outlet (12) to one side of the second channel (112) distant from the air outlet (12). 10.Cleaning device, comprising: a device body; at least one roller brush holder according to any of claims 1 to 9, disposed in the device body; and at least one roller brush, wherein the roller brush is disposed in a roller brush holder.