Rolling brush assembly and ground cleaning equipment

Abstract

The utility model relates to the technical field of cleaning equipment, in particular to a rolling brush assembly and ground cleaning equipment, and aims to solve the problems that the service life of an existing electric heating part is shortened due to the fact that the temperature of the existing electric heating part is too high, and the endurance of a scrubber is shortened. In order to achieve the purpose, the rolling brush assembly comprises a roller, a connecting assembly, an electric heating assembly and a protection piece. A brush is arranged on the outer side of the roller; one end of the connecting assembly is inserted into the roller; the electric heating assembly is connected with the roller, and the electric heating assembly is arranged to be capable of heating the brush; the protection piece is arranged in the roller and electrically connected with the electric heating assembly, and the protection piece is set to be disconnected when the temperature or current of the protection piece is larger than or equal to a preset threshold value. The electric heating assembly can heat the brush, the protection piece is electrically connected with the electric heating assembly, when the temperature or current of the protection piece is larger than the preset threshold value, the protection piece can be disconnected, the situation that the service life is shortened due to overheating of the electric heating assembly is avoided, and meanwhile the endurance of the scrubber can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, and particularly provides a roller brush assembly and a floor cleaning equipment. Background Art

[0002] With the continuous upgrading of consumption concepts, users' demands for household cleaning products have also become more diverse and personalized. Take floor cleaning products for example. From the traditional forms of manual cleaning such as mops and brooms, it has gradually transitioned to automated mechanical cleaning forms such as floor sweeping robots and floor washing machines. The emergence of such products has greatly improved the convenience of users' lives, making household cleaning no longer a heavy labor burden.

[0003] For household hand-held floor washing machines, their cleaning principle is to drive components such as roller brushes and drums to rotate at high speed through a motor, and spray clean water onto the roller brush through a nozzle, so that the roller brush can remove stubborn stains on the ground in a way of repeated rotation and scrubbing. Compared with the traditional manual mopping method, it has the advantages of fast cleaning speed, good cleaning effect, and applicability to various different stains. At the same time, in order to improve the cleaning efficiency of the roller brush, heating components such as heating films and heating wires are added inside the roller brush in related technologies, and these heating components can be used to heat the brush cloth of the roller brush to achieve the cleaning effect of "high-temperature scrubbing".

[0004] However, after long-term use, the temperature of the heating components will rise. The too high temperature of the heating components will cause the shortening of the service life of the heating components and the reduction of the battery life of the floor washing machine.

[0005] Correspondingly, a new technical solution is needed in this field to solve the above problems. Summary of the Utility Model

[0006] The utility model aims to solve the above technical problems, that is, to solve the problems that the too high temperature of the existing heating components will cause the shortening of the service life of the heating components and the reduction of the battery life of the floor washing machine.

[0007] The utility model provides a roller brush assembly, which includes a drum, a connection component, a heating component and a protection component;

[0008] A brush is arranged on the outer side of the drum;

[0009] One end of the connection component is inserted into the drum;

[0010] The heating component is connected to the drum, and the heating component is configured to be able to heat the brush;

[0011] The protection component is arranged in the drum and is electrically connected to the heating component, and the protection component is configured to disconnect when its own temperature or current is greater than or equal to a preset threshold.

[0012] In the case of adopting the above technical solution, the electric heating component can heat the brush, and the protection component is electrically connected to the electric heating component. When the self-temperature or current of the protection component is greater than the preset threshold, the protection component can be disconnected, avoiding the shortening of the service life caused by overheating of the electric heating component, and at the same time improving the battery life of the floor washer.

[0013] In a specific embodiment of the roller brush assembly, the protection component is a thermal switch; or

[0014] The protection component is a fuse.

[0015] In the case of adopting the above technical solution, the thermal switch can be disconnected when the temperature is high and closed when the temperature is normal. The fuse can be melted when the temperature is high.

[0016] In a specific embodiment of the roller brush assembly, the protection component is connected to the power supply wire of the electric heating component, and the protection component is suspended in the drum.

[0017] In a specific embodiment of the roller brush assembly, the electric heating component includes a heating film, the heating film is coated on the outside of the drum, and the brush is arranged on the outside of the heating film.

[0018] In a specific embodiment of the roller brush assembly, the connection component includes a base connector, a bearing and a drum connector;

[0019] The base connector forms a fixed cylinder;

[0020] The bearing is sleeved on the fixed cylinder;

[0021] The drum connector is sleeved on the bearing, and the drum is sleeved on the outside of the drum connector.

[0022] In a specific embodiment of the roller brush assembly, a conductive slip ring is arranged in the fixed cylinder, and one end of the conductive slip ring is connected to the heating film through a power supply wire.

[0023] In the case of adopting the above technical solution, the connecting wires at both ends of the conductive slip ring can remain connected when rotating relative to each other, facilitating the power supply to the heating film.

[0024] In a specific embodiment of the roller brush assembly, one end of the protection component is electrically connected to one end of the conductive slip ring, and the other end of the protection component is electrically connected to the heating film.

[0025] In a specific embodiment of the roller brush assembly, the base connector includes a connecting plate, and the fixed cylinder is formed on one side of the connecting plate.

[0026] In a specific embodiment of the rotary brush assembly, a conductive contact is provided on the connecting plate, the other end of the conductive slip ring is connected to the conductive contact, and the conductive contact is configured to be connectable to a power supply contact on the base.

[0027] In the case of adopting the above technical solution, the conductive contact is configured to be connectable to the power supply contact on the base, thereby facilitating power supply to the electric heating assembly.

[0028] The present application also provides a floor cleaning device, including a base and the above-mentioned rotary brush assembly;

[0029] A placement portion for placing the rotary brush assembly is provided on the base, the rotary brush assembly is disposed within the placement portion and connected to the base.

[0030] In the case of adopting the above technical solution, the electric heating assembly can heat the brush, the protection member is electrically connected to the electric heating assembly, and when the self-temperature or current of the protection member is greater than a preset threshold, the protection member can be disconnected to prevent the electric heating assembly from overheating and shortening its lifespan, and at the same time improve the battery life of the floor washer. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings, in which:

[0032] Figure 1 is an external overall structure diagram of the rotary brush assembly;

[0033] Figure 2 is an overall cross-sectional view of the rotary brush assembly;

[0034] Figure 3 is a structure diagram of the rotary brush assembly after removing the drum;

[0035] Figure 4 is Figure 3 a cross-sectional view of the structure in

[0036] Figure 5 is a structure diagram of the base connecting member in the rotary brush assembly.

[0037] LIST OF REFERENCE NUMERALS: 1 - base connecting member; 11 - connecting plate; 111 - fixing protrusion; 112 - conductive contact; 12 - fixing cylinder; 123 - annular flange; 2 - drum; 22 - reinforcing rib; 4 - bearing; 6 - drum connecting member; 63 - outward turning groove; 7 - conductive slip ring; 8 - protection member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not used to limit the protection scope of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios. For example, although the electric heating component in the specification is described in combination with a heating film, it is obvious that the present application can adopt other electric heating components, such as heating rods or heating wires, etc.

[0039] It should be noted that in the description of the present application, unless otherwise clearly specified and limited, terms such as "arranged" and "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or other connections; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should be understood that the orientation or positional relationship indicated by terms such as "upper" and "inner" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 utility model. In addition, "a plurality of" in the present application means at least two.

[0040] As Figures 1-5 shown, to solve the problem that the too high temperature of the existing electric heating component will shorten the service life of the electric heating component and reduce the battery life of the floor washer, the present utility model provides a roller brush assembly, which includes a roller 2, a connection component, an electric heating component and a protection member 8. A brush is arranged on the outer side of the roller 2, and one end of the connection component is inserted into the roller 2. The electric heating component is connected to the roller 2, and the electric heating component is arranged to be able to heat the brush. The protection member 8 is arranged in the roller 2 and is electrically connected to the electric heating component. The protection member 8 is arranged to disconnect when its own temperature or current is greater than or equal to a preset threshold. In this way, the electric heating component can heat the brush, and the protection member 8 is electrically connected to the electric heating component. When the own temperature or current of the protection member 8 is greater than the preset threshold, the protection member 8 can disconnect, avoiding the shortening of the service life caused by the overheating of the electric heating component, and at the same time improving the battery life of the floor washer.

[0041] As Figures 1-5 shown, in a preferred embodiment, the roller brush assembly includes a roller 2, a brush, a connection component, an electric heating component, a protection member 8 and a conductive slip ring 7. Among them, the connection component includes a base connection member 1, a bearing 4 and a roller connection member 6. The base connection member 1 includes a connecting plate 11, and one side of the connecting plate 11 ( Figure 5On one side of the middle connecting plate 11 shown, a fixed cylinder 12 is formed. The bearing 4 is sleeved on the fixed cylinder 12, the roller connecting piece 6 is sleeved on the bearing 4, and the roller connecting piece 6 is inserted into one end of the roller 2. The electric heating component uses a heating film, the heating film is arranged on the outer side of the roller 2, and the brush is arranged on the outer side of the heating film. The conductive slip ring 7 is located inside the fixed cylinder 12, and the protection piece 8 is located on the wire between the conductive slip ring 7 and the heating film and is suspended inside the roller 2.

[0042] As Figure 4 and Figure 5 shown, in a preferred embodiment, the base connecting piece 1 includes a connecting plate 11. On one side of the connecting plate 11 ( Figure 5 the side shown by the middle connecting plate 11), a fixed cylinder 12 is formed, and the fixed cylinder 12 is internally connected to the connecting plate 11. At the same time, on one side of the connecting plate 11 ( Figure 5 the side shown by the middle connecting plate 11), there is a fixing protrusion 111 for fixing the fixed conductive contact 112, which is convenient for fixing the conductive contact 112. The conductive contact 112 is installed on the fixing protrusion 111 and extends into the inside of the connecting plate 11. The conductive slip ring 7 is arranged inside the fixed cylinder 12, and the wire connected to one end of the conductive slip ring 7 can pass through the inside of the connecting plate 11 and be electrically connected to the conductive contact 112. The conductive contact 112 is arranged to be able to connect with the power supply contact on the floor washing machine base. In this way, it is convenient to supply power to the electric heating component.

[0043] It should be noted that the setting of the base connecting piece 1 is not unique, and those skilled in the art can select the specific structure of the base connecting piece 1 based on the specific application scenario. For example, the fixed cylinder 12 and the connecting plate 11 can be separately arranged and connected by means of threaded connection or snap connection.

[0044] The fixed cylinder 12 is also provided with an annular flange 123, and the annular flange 123 is used to limit the inner ring of the bearing 4. And on the outer side of the fixed cylinder 12, there is a step protruding outward from the fixed cylinder 12 for fixing the inner ring of the bearing 4.

[0045] It should be noted that the above setting of the fixed cylinder 12 is not unique, and those skilled in the art can select the specific structure of the fixed cylinder 12 based on the specific application scenario. For example, the annular flange 123 can be replaced by a plurality of arc-shaped protrusions, as long as it can prevent the inner ring of the bearing 4 from moving on the fixed cylinder 12. Another example is that the outer side of the fixed cylinder 12 can be not provided with a step.

[0046] As Figure 3 and 4 shown, in a preferred embodiment, the bearing 4 is sleeved on the step on the outer side of the fixed cylinder 12, and the inner ring of the bearing 4 is connected to the fixed cylinder 12 by an interference fit method.

[0047] It should be noted that the bearing 4 is preferably a deep groove ball bearing. Of course, it can also be a cylindrical roller bearing, a tapered ball bearing, a self-aligning ball bearing, a self-aligning roller bearing, or other bearings that can be used in this position. It should also be noted that the connection method between the bearing 4 and the fixed cylinder 12 is not unique. For example, the bearing 4 is sleeved on the fixed cylinder 12, and an annular retaining ring is threadedly connected to the fixed cylinder 12 to limit the movement of the bearing 4 along the length direction of the fixed cylinder 12. Of course, the bearing 4 can also be not provided, and the roller connecting member 6 and the fixed cylinder 12 are slidably connected or rollingly connected.

[0048] As Figure 3 and 4 shown, in a preferred embodiment, the roller connecting member 6 is sleeved outside the bearing 4, and the roller connecting member 6 and the bearing 4 are connected by an interference fit. One end of the roller connecting member 6 ( Figure 4 the left end of the roller connecting member 6 in Figure 4 is inwardly contracted to form a retaining ring, and one side of the outer ring of the bearing 4 ( Figure 4 the left side of the roller bearing 4 in Figure 4 ) abuts against the retaining ring. An outward turning groove 63 is provided on the outside of the retaining ring of the roller connecting member 6 to facilitate one end of the roller 2 to be inserted into the outward turning groove 63.

[0049] It should be noted that the setting of the roller connecting member 6 is not necessary, and those skilled in the art can select the specific structure of the roller connecting member 6 based on the specific application scenario. For example, the retaining ring can be connected to the roller connecting member 6 by a threaded connection or a clamping connection. Another example is that the retaining ring can be not provided. Another example is that the outward turning groove 63 can be not provided, and a retaining edge is provided on the outside of the retaining ring of the roller connecting member 6, and one end of the roller 2 abuts against the retaining edge. Another example is that a retaining piece is provided inside the roller connecting member 6 to limit the outer ring of the bearing 4 between the retaining ring and the retaining piece. Another example is that a tightening hole is provided in the roller connecting member 6, and a tightening bolt is provided in the tightening hole to tighten the outer ring of the bearing 4 through the tightening bolt, so that the outer ring of the bearing 4 can be fixed to the roller connecting member 6. Correspondingly, a plurality of pits for the tightening bolt to tighten are provided on the outer ring of the bearing 4.

[0050] As Figure 1 and 2 shown, in a preferred embodiment, the roller 2 is sleeved outside the roller connecting member 6, a heating film is provided outside the roller 2, and a brush is provided outside the heating film. A plurality of reinforcing ribs 22 along the length direction of the roller 2 are provided inside the roller 2. At the same time, the outside of one end of the roller 2 ( Figure 2 the left end of the roller 2 in Figure 2 ) is reduced in diameter, so that after the roller 2 and the roller connecting member 6 are combined, this end can be located in the outward turning groove 63.

[0051] It should be noted that the setting of the above-mentioned drum 2 is not unique, and those skilled in the art can select the specific structure of the drum 2 based on the specific application scenario. For example, a plurality of annular reinforcing ribs arranged along the length direction of the drum 2 can be provided. Of course, the reinforcing ribs can be not provided. For another example, the outer side of one end of the drum 2 is not subjected to necking.

[0052] In a preferred embodiment, the electrothermal component includes a heating film. The heating film is arranged on the outer side of the drum 2, and a brush is arranged outside the heating film, and the heating film can heat the brush. Of course, the heating film can also be not provided, and a heating rod or a heating wire can be arranged in the drum 2, as long as the brush can be heated.

[0053] In a preferred embodiment, the conductive slip ring 7 is arranged in the fixed cylinder 12, and the wire connected to one end of the conductive slip ring 7 can pass through the inside of the connecting plate 11 and be electrically connected to the conductive contact 112, and the other end of the conductive slip ring 7 is connected to the heating film through the protection member 8.

[0054] It should be noted that the conductive slip ring 7 is divided into a rotating part and a fixed part, and relative rotation can occur between the rotating part and the fixed part, and electrical connection can be maintained while rotating. The specific structure of the conductive slip ring 7 is the prior art and will not be elaborated here. In this case, the fixed part of the conductive slip ring 7 is fixedly connected to the inner wall of the fixed cylinder 12, the wire on the fixed part is connected to the conductive contact 112 on the base connecting member 1, and the wire on the rotating part is electrically connected to the heating film. Of course, the conductive slip ring 7 can be not provided, and a fixed ring and an elastic sheet are used. The fixed ring is connected to the fixed part, and the elastic sheet is connected to the rotating part, and the elastic sheet keeps in contact with the fixed ring under the action of elasticity.

[0055] In a preferred implementation manner, the protection member 8 is preferably a thermal switch. The thermal switch is in a normally open state, and the thermal switch can act based on its own temperature. When its own temperature is equal to or higher than the preset threshold, the thermal switch disconnects, so that the heating film cannot be powered. When its own temperature is lower than the preset threshold, the thermal resistor closes, so that electrical conduction is established between the heating film and the conductive contact 112. The specific structure of the thermal switch is the prior art and will not be elaborated here. In an alternative implementation manner, the protection member 8 can also be a fuse. The fuse is that when its own temperature is equal to or higher than the preset threshold, the fuse melts, so that conduction between the heating film and the conductive contact 112 is no longer established. Different from the thermal switch, once the fuse melts, it cannot be restored. Of course, when the current passing through the protection member 8 increases, the temperature of the protection member itself will rise. Therefore, the magnitude of the current passing through the protection member can also be used as a condition for the protection member 8 to disconnect.

[0056] The present application also provides a floor cleaning device, including a base and the above-mentioned detachable roller brush assembly; a placement portion for placing the roller brush assembly is provided on the base, and the roller brush assembly is disposed within the placement portion and connected to the base. In this way, the electric heating component can heat the brush, and the protection member 8 is electrically connected to the electric heating component. When the self-temperature or current of the protection member 8 is greater than a preset threshold value, the protection member 8 can be disconnected to prevent the electric heating component from overheating and shortening its lifespan, and at the same time, the battery life of the floor washer can be improved. The floor cleaning device is preferably a floor washer, but of course, it can also be a sweeping robot or an automatic mopping machine, etc.

[0057] Those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0058] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A roller brush assembly, characterized in that: It includes a roller, a connecting component, an electric heating component and a protective component; A brush is arranged on the outer side of the drum; One end of the connecting assembly is inserted into the drum; The electric heating component is connected to the drum, and the electric heating component is configured to heat the brush; The protective member is arranged in the drum and is electrically connected to the electric heating component. The protective member is configured to be disconnected when its own temperature or current is greater than or equal to a preset threshold.

2. The roller brush assembly according to claim 1, characterized in that: The protective element is a thermal switch; or The protection component is a fuse.

3. The roller brush assembly according to claim 1, characterized in that: The protective member is connected to the power supply wire of the electric heating component, and the protective member is suspended in the drum.

4. The roller brush assembly according to claim 1, characterized in that: The electric heating component comprises a heating film, the heating film is coated on the outer side of the drum, and the brush is arranged on the outer side of the heating film.

5. The roller brush assembly according to claim 4, characterized in that: The connecting assembly includes a base connecting piece, a bearing and a roller connecting piece; The base connector is formed with a fixing cylinder; The bearing is sleeved on the fixed cylinder; The roller connecting piece is sleeved on the bearing, and the roller is sleeved on the outer side of the roller connecting piece.

6. The roller brush assembly according to claim 5, characterized in that: A conductive slip ring is arranged in the fixing cylinder, and one end of the conductive slip ring is connected to the heating film through a power supply wire.

7. The roller brush assembly according to claim 6, characterized in that: One end of the protective member is electrically connected to one end of the conductive slip ring, and the other end of the protective member is electrically connected to the heating film.

8. The roller brush assembly according to claim 6, characterized in that: The base connector includes a connecting plate, and the fixing tube is formed on one side of the connecting plate.

9. The roller brush assembly according to claim 8, characterized in that: The connecting plate is provided with a conductive contact, the other end of the conductive slip ring is connected to the conductive contact, and the conductive contact is configured to be connectable to a power supply contact on the base.

10. A floor cleaning device, characterized in that: It comprises a base and a roller brush assembly as described in any one of claims 1 to 9; The base is provided with a placement portion for placing the roller brush assembly. The roller brush assembly is arranged in the placement portion and connected to the base.

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